Stihl 38 trimmer carburetor adjustment

Carburetor Stihl fs 38 DIY repair

In detail: carburetor Stihl fs 38 DIY repair from a real master for the site olenord.com.

Stihl fs 38 lawn mower repair

Repair of Stihl lawn mowers in St. Petersburg. view prices!

Do-it-yourself Stihl fs 55 lawn mowers repair. Njkmznnb.ru

Repair of Stihl lawn mowers from the Abris company

Adjust the carburetor of the lawn mower with your own hands, repair and adjust, the principle of robotic attachment, video

Stihl ms-180 chainsaw repair

How to repair a lawn mower yourself. Jiminy.ru

DIY Stihl fs 55 lawn mowers repair. Str24.ru

Stihl lawn mowers carburetor repair

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lawn mower Stihl. overview of models Stihl FS55, Stihl FS38, Stihl FS130, spare parts, video

Trimmer petrol Stihl FS 55

DIY lawn mowers Stihl fs 55 repair

Video (click to play).

andzej ksevickij: the opepany tada are noticing the paucho with their noses, it is clear why they started from the wrong end.

Vanja Kavka: instruction on Stihl lawn mowers with detailing who needs https://goo.gl/gD3jt7

Kostya Demchenko: why was it necessary to pull out the plastic sleeve from the shaft. it was necessary to pull out the cable, make a lock and insert it from the engine side!

Andrey Vinichuk: sorry lawn mower Stihl FS 55

Andrey Vinichuk: Thanks for the review, the question of the Stihl FS 5 lawn mower, the traction disappeared when the trigger was pulled, disassembled the handle, the cable is in place, when the cable is pressed it does not return to the opposite position, which means the cable popped out near the engine did not know where it ends and began to disassemble the white part of the lawn mower unscrewed a few screws by loosening the bar mount, the bar protruded out of the engine, noticed the cable attachment in the engine and fixed it, put the bar in place, but at startup, it seems to me, the sound became different, pulled the bar again and noticed a round one at the very end of the bar, and at the end small square.

Repair of lawn mowers Stihl fs 38 repair of a flexible shaft If the chainsaw or lawn mower STARTS BADLY). A little about jewelry repair of carburetors. Trimmer Stihl FS 55. Life in the country. Chinese lawn mowers. is it worth buying? Husqvarna 240 carburetor repair (Part 1). Oleo-Mac sparta. The reason for the overflow of fuel and the lack of idling. Chinese lawn mower will not start. Diagnostics and repair. the lawn mower stalls. The Chinese lawn mower won’t start. It’s interesting. Stihl FS-55 (Lawn Mower) TEST ORIGINAL Stihl FS 55 not picking up steam? yes well it to the bath. Why the lawn mower won’t start. Husqvarna. Poorly working, stalling. An interesting case. Stihl FS55-repair. STRONG VIBRATION WHEN OPERATING THE MOWING How to lubricate the boom shaft. Stihl ms 361. Chainsaw won’t start.

If you notice that the cutting element continues to rotate at idle speed on the Stihl FS 55 lawn mowers after a long period of operation, then you need to adjust the carburetor.

Why turn the LA adjusting screw counterclockwise until the cutting element stops rotating.

This channel is dedicated to reviews of techniques that we encounter in everyday life.

If you want to keep abreast of the latest news, I recommend that you subscribe to this channel. New videos, I post regularly.

Many thanks to everyone who reposts my video clips, thereby helping the channel to develop into.

It is inherent in man to ennoble the place in which he spends the lion’s share of his time. Residents of cities resort to the services of designers, or they themselves try to change something in their home, buy new furniture, wallpaper, so that when they come home after a hard day, they can mentally rest and relax in a favorable environment.

Residents of their own homes outside the city have completely different concerns and requirements. It is necessary to mow shrubs, grass, various dead wood in a timely manner, carefully monitor the state of the personal plot and garden.

It is clear that this requires a slightly different means of achieving comfort. And here a new brainchild of engineering comes to the fore. lawn mowers from Stihl.

The history of this German brand dates back to 1926. At the initial stages of its development, the company was engaged in the production and sale of various components for washing and steam machines. It all began, like many.

I want to share my experience in operating the Stihl FS 36 and FS 38 trimmers, maybe someone will be useful. My first trimmer FS 36 1999 onwards, assembled in the USA, worked for 7 seasons in three areas, burned about 60-70 liters of mixture (120-140 hours) on native oil in a ratio of 1:40, 95 Sibneft gasoline. There were no problems with the engine, I didn’t even change the candle, I cleaned the foam air filter and that’s it. The 4130 FS 36 engine is quite interesting. the front starter, cantilever crankshaft, single ring piston, carburetor and muffler are located at the rear. At the same time, it has the largest working volume of 30 cubic cm. from trim tabs and a 0.5 liter tank on the side. Very high-torque at medium revs and the exhaust sound like a b / p “Friendship”))) And the body is narrow, which is more convenient to work. Disassembled from TO on FS 36, lubricated the flexible shaft with ALPINA gear grease and the rod tip, changed the bobbin. The line used a round 2.4 mm ALPINA, an excellent line, and it was not better for sale at that time. Shtilevskaya 2.4 mm will be worse. For 7 years.

Replacing the O-ring, the accelerator in the carburetor Stihl FS55 lawn mowers (benzotrimer) Preparing the fuel mixture for the Stihl fs 55 petrol trimmer. Repairing Stihl FS 130 lawn mowers. The trimmer is not picking up speed, what should I do? PRO lawn mower Stihl FS 55. lawn mower Stihl FS 55. repair of the Stihl FS55 mower. Stihl FS 55. carburetor adjustment (idle). Don’t throw away the blender! Do-it-yourself engraver. How to distinguish a copy of Stihl 180 from the ORIGINAL.

00:41. Not gaining momentum
01:32. When jerking the starter from under the finger, whistling is heard. compression is normal
04:33. Technka loves cleanliness
05:00. completely disassemble the carburetor
05:22. carefully remove the membrane
05:36. we disassemble the primer
05:47. the fuel pump membrane is intact
06:26. in a yellow bottle. technical alcohol
07:04. the needle valve works
07:10. in the carburetor itself. the second filter in the form of a fine mesh. Was jammed.
07:39. for reliability, removed and cleaned the needle valve
08:46. we blow the jet
10:00. put back the needle valve
11:00. screw the jet into place
12:33. the first time I put the membrane incorrectly. then I took it apart and.

Lawn maintenance is simple: watering the grass is enough, preventing a variety of weeds from appearing and periodically mowing. And if the first two jobs do not cause any particular difficulties, then difficulties arise with a haircut. A scythe is traditionally used to cut grass, but this is a tool that requires experience and considerable.

Choosing Stihl lawn mowers

Shtil lawn mowers can help out.

Annotation for adjusting the carburetor lawn mowers.

The trimmer does not belong to complex household appliances, therefore most of its breakdowns are mechanical in nature and are quite successfully eliminated with their own hands. Even if the engine fails for severe reasons. damage to the piston ring, for example, repairs are reduced to replacing a part.

And even with a relatively conventional design, such a part of the device as a carburetor needs to be adjusted.

A carburetor is a power system module in which liquid fuel and air are mixed before being fed into the engine cylinders. Lawn mower petrol carburetor adjustment. Mixing and feeding are adjusted appropriately depending on the tool and its mode of operation.

The device of the carburetor lawn mowers is the same for virtually all cases. Adjusting the carburetor of a Chinese lawn mower. It belongs to the category of float devices. The latter provide constant characteristics of the finished consistencies.

The mechanism of the module is as follows.

  • Air enters the body of the air damper tube. Matrix lawn mower carburetor adjustment. The latter increases or decreases the air flow, depending on its own position.
  • In the area where the hole for the gasoline supply is formed, the tube has a narrowing. a diffuser. Here the flow rate increases.
  • The fuel from the float chamber is fed through the nozzle into the tube. The float level determines the amount of fuel supplied. Because the pressure in the chamber is normal, and in the tube it is low due to the greater rarefaction of the air, gasoline is sucked in through the nozzle.
  • The accelerated air flow picks up the fuel and sprays it, forming an air-fuel mixture of a suitable density.
  • The mixture is sucked into the cylinder through the pipeline.

The more strongly the air damper in the tube is opened, the higher the density of the air flow, and, therefore, more fuel enters the cylinder. lawn mower stiga handle adjustment. Setting up the carburetor for lawn mowers is reduced to setting the valve ratio at which the density of the fuel consistency becomes good.

The debugging of the carburetor is certainly done during the manufacture of the apparatus. lawn mower texas 330 carburetor adjustment. Usually, the owners will find out about the need to adjust the fuel supply with their own hands only after rather severe breakdowns, in the process of correcting which, the module was removed and, for example, cleaned.

Signs of a failure in the settings are the following:

  • starts, but here the engine stalls. since the engine can only work when a certain amount of gasoline is supplied, with a very “poor” fuel, in other words, if the supply channel is blocked, the engine will stop;
  • very high fuel consumption, a lot of exhaust gases. the result of incomplete combustion of the consistency. In this case, on the contrary, there is a lot of fuel and the mixture comes out extremely dense.

Trimmer Stihl FS 55 lawn mower Does not develop speed, stalls, we sort out the carburetor Thank you for your views.

Adjust the carburetor trimmer Stihl FS 55 in the video in order to adjust the idle speed.

The carburetor for lawn mowers Stihl, Makita, Husqvarna and others is adjusted using the adjusting screws. Sometimes a prerequisite for a malfunction is a violation of fixation. due to vibration or damage to the protective cap. Such a breakdown can be found by simply trying to turn the screw a little: if the fixation is not rigid, it is worth checking the setting.

Setting up the module does not apply to repair and replacement of spare parts is not required. In this case, the lawn mowers carburetor repair kit will not come in handy.

Three screws are provided for debugging:

  • L. is regulated first, because it is responsible for supplying fuel at low speeds;
  • H. he is responsible for supplying gasoline at high speeds, also for fuel consumption and temperature;
  • T. it is used to debug idle.

There are options, usually the carburetor of a Chinese lawn mower, when only one screw remains on the body for debugging. for the idle option. Adjusting the valves on the lawn mower. This does not mean that the module is configured automatically. it means that it will be problematic to carry out even such a type of repair as debugging. In the photo. adjusting the carburetor of a Chinese lawn mower.

If there is a tanometer, and if the recommended rpm values ​​are indicated in the product passport, the correction can be made more accurate, focusing not on hearing, but on the readings of the device.

6 comments on the post Carburetor adjustment and repair lawn mowers

Please clarify. In the adjustment section, item 5, screw L error? Should you read screw A? Thank you.

tell me the initial position of the screws H L LA

SHOW ORIGINAL POSITION

tell me the initial position of the screws H L LA

Read more:  Trimmers Carver

Good morning. Please help me figure out the fs 38 trimmer. I got it not working, namely the drive shaft does not twist the shank. When parsing. in the pipe there are 2 bushings and a drive shaft, from above the shank was fixed with a bolt through the pipe. I read here about some kind of retaining ring. I understand that when you press the gas, the drive shaft flies out and does not twist the shank, help me figure it out

Kain81. It is necessary to replace the shank assembly, article 4140-640-1402 costs 300-400r, the lock washer will not help. Make sure that there are no cracks on the rod where the shank is attached with a screw and do not forget to lubricate it before installation and every 25 hours of operation with gear lubricant
BigMazzy. clearance 0.1-0.3mm from the flywheel magnets

МStihl wrote:
BigMazzy, 0.1-0.3mm clearance from flywheel magnets

Kain81 wrote:
Good morning. Please help me figure out the fs 38 trimmer. I got it not working, namely the drive shaft does not twist the shank. When parsing. in the pipe there are 2 bushings and a drive shaft, from above the shank was fixed with a bolt through the pipe. I read here about some kind of retaining ring. I understand that when you press the gas, the drive shaft flies out and does not twist the shank, help me figure it out

Everything, figured it out. The upper part of the pipe was bent and did not insert completely and was not clamped with a screw. Therefore, I poured the drive shaft

Good morning!
Connoisseurs, tell me what the problem is: gasoline has stopped flowing into the so-called “nipple” on the carburetor. Pressing does not lead to anything. The fuel filter is new when you remove the upper part of the carburetor and press the gasoline spring. And most importantly: we climbed into the carburetor, t.k the trimmer worked only at idle, as soon as you press on the gas stalled immediately.

Dear members of the forum, help with the repair please! I’ll start in order: I gave my neighbor a trimmer to mow the grass on the lawn for a day. There was a full tank of gasoline. (He has his own gasoline) In 40 minutes he comes and says: “At idle, it works, but how the gas stalls” It turned out that he poured a mixture in which there was 2 times more oil than needed. (Instead of 100ml-200ml). But this was already found out later, and before that he reached the carburetor, disassembled it, screwed something up and now gasoline it does not enter the nipple on the carburetor at all. Knowledgeable people help, otherwise it is far to go to the service, and it is unjustifiably expensive there.

scham wrote:
he reached into the carburetor, disassembled it, screwed something up and now gasoline does not enter the nipple on the carburetor at all.

I’m not 38. But I’m trying to guess. I don’t know if the 38th filter is in the tank, then there is a hose, but I don’t know into the carb itself, I didn’t climb.

new fuel tank filter.

scham. See the hose. Is it not pinched, or vice versa, is it not damaged, maybe the air sucks. Then it will not upload either. If everything is fine, I will try to contact a specialist at the expense of karba.

valerich, thanks! The hose, most likely, is also in order, because if you remove the nipple and the gas pump, then gasoline goes. It seems to me that when he disassembled the carburetor, he could damage the gasket (there is a slight bend).

valerich wrote:
I’ll try to contact a specialist at the expense of karba.

Has already applied. I think he will unsubscribe himself.

scham wrote:
he reached into the carburetor, disassembled it, screwed on something

Go, torture him, what exactly did he do with the carburetor. did he take it off, which covers he opened (if he opened it)
Which of the screws twisted and how much.
So, without this information, nothing can be said at all.

Yes, and be sure to check the exhaust pipe on the muffler to see if it is clogged with soot.

Anyway, hand the scythe to your neighbor and let him go to the service. After all, what a habit of taking other people’s things and poking around in them

I took it, it didn’t work properly. give it back and say it doesn’t work.
In short, okay, let’s get information, let’s think. I won’t croak yet, maybe everything will be fine.
I will look from time to time, although I am sitting on a very frail Internet.

Olegych wrote:
Anyway, hand the scythe to your neighbor and let him go to the service. After all, what a habit of taking other people’s things and poking around in them

Stopudovo I agree. Climbed? Now let him take and repair to the state in which he took.

Olegych wrote:
Anyway, hand the scythe to your neighbor and let him go to the service. After all, what a habit of taking other people’s things and poking around in them

yes, I would have done it, but the person has helped many times in different situations, and so it will not be very beautiful on my part.
says that he removed the upper part, where the nipple, pump, gasket and membrane. screwed the fuel supply screw, but then set it as it was.

Could mix up the membrane with the gasket.
Remove the top cover, lay out the parts in order, take pictures. we will see.

Olegych Already checked, first the gasket, then the membrane.
I think that it only makes sense to photograph the gasket, because there is a small hall on it.

scham wrote:
Already checked, first the gasket, then the membrane.
I think that it only makes sense to photograph the gasket, because there is a small hall on it.

It’s all about the pump piston, it’s in the carburetor. You need to remove the drosel, carefully! The piston will fly out, remove the spring. You will lubricate the piston with an autolock, and you will not plant it all the way, so that the piston does not interfere with the throttle shaft. put it deep, close the channels.

sorry that no one could help you)) this is my first time on the forum)))

scham. if you have any questions about the order of assembling the carburetor or adjustment, write! I will answer)))

scham wrote:
It turned out that he poured a mixture in which there was 2 times more oil than needed

this is not a problem, the problem may still be in the quality of the fuel itself. What kind of gasoline, oil? How many days has it been active (how many days have passed since the fuel was prepared)? People, always pour fresh fuel! When oil enters gasoline, a chemical reaction occurs (decomposition of oil in gasoline) and, due to external factors, the survivability of the fuel depends.

scham. damn) check the muffler before that. Maybe he is clogged?
“- if anything, knock!

Uncle Syoma °. tell me what the gap should be between the roter and stater?

Post 26
. “It works at idle, but how you let the gas stall”.

Same problem.
If you have time to splash something like Car Cleaner into the “drawbar” with fully open throttle valve, it will blow up! Even WD 40 passes.
It is understood that there is not enough fuel for full power. By analogy with an autocarb, the main dosing system does not work. It seems so called.
This thing is a complete layman, but I would like to figure it out! My engine has been lying motionless since 07.2013. something must have turned sour.

The fuel is fresh, only from the pump. The oil is correct and 1:50. The muffler is dry and clean. Start with 1-2 attempts.

Multik_off wrote:
It’s all about the pump piston, it’s in the carburetor. You need to remove the drosel, carefully! The piston will fly out, remove the spring. You will lubricate the piston with an autolock, and you will not plant it all the way, so that the piston does not interfere with the throttle shaft. put it deep, close the channels.

Thanks for the tip. how to fix the problem, but. where and how is this piston, throttle, etc.

  • Where can one get acquainted with the theory of this karba? Description, principle of operation of its systems.
  • Where to get hold of the explosion-scheme of this karba (well, at least similar)?
  • Possible malfunctions and remedies?

I would be very grateful for any information: literature, links, videos, etc.

I will share the diagrams, but I don’t know how “they put pavidlo into caramels”

Batka-L wrote:
Where can one get acquainted with the theory of this karba? Description, principle of operation of its systems.

As far as I know. On such a technique, carburetors of the walbro type (or ZAMA, of the same type) are used. Walbro schemes and descriptions in the internet are full.

I was soaring with this question from work with some kind of Internet. it was painfully unbearable: the engine does not work, the infection!
I came home. a large “coffin” with a “thick” cable quickly gave out a lot of useful information.
Sinus, valerich. thanks for the help!
Now I will dig in more detail, but there will be questions. I will be back!
=
It’s like a conversation between two or more people in some language (in this case, a technical one): communication is possible only if you know the language! So. I will teach.

Stihl fs55 carburetor adjustment trimmer weedeater gas trimmer tune up

Batka-L wrote:
there will be questions. I will be back!

Stihl fs 55 trimmer carburetor repair

Vladimir Komlev: Now I bought this magic, thanks for the review

SS31: Tell me, can you just push this cable back ?? Those. Does he himself get into the center of the sleeve or is there some kind of trick ?? If you take out the cable only from above to lubricate it, it will simply be inserted back later??

Chuck Norris: he does this every year on a campaign, but he does not mow her, and constantly serves

with in: I read that lithol corrodes aluminum. duralumin bar just at the braid.

Alexander Ivanov: on the workbench it would probably be more convenient
Gasoline last year, added oil. Stihl fs 38 heats up, but what Stihl does not spend on repairs from 900 to 1500 rubles. The mixture is prepared in containers made of food grade plastic. Stihl trimmer repair of Stihl fs 38 lawn mowers. Carburetor repair. Adjustment and repair of the carburetor lawn mowers carburetor trimmer Stihl fs 38. Hello to the service. How to repair the trimmer “Stihl Stihl fs 38. Internet carburetor repair. Adjusting the carburetor trimmer Stihl fs 38 Spec.

People, look at such advisors much less.

zavod robot: I can’t assemble this snow-white casing, I don’t understand how the reddish pistol is assembled in it.

Andrey Spiridonov: and last year’s gasoline. and threaded with a hammer. well done! (the main thing is more mayonnaise))

Trimmer Stihl FS 55 lawn mower Does not develop speed, stalls, we sort out the carburetor Thank you for your views.

Replacing the O-ring, the accelerator in the carburetor lawn mowers (benzotrimer) Stihl FS55.

Alexey Zabugorkin: and not a “hexagon stands” but a flexible square-section shaft

Alexey Belyakov: Dmitry, thanks for the review.

FUN: If you look at it, you have never mowed with this trimmer, why then you say that it is not 1 season already, I took it apart. even if you look at it visually, there is not even the slightest sign of wear. This means that this trimmer has not even worked yet.

Vovka Vovka: did not pull at high speeds, did a little tuning, sawed off the tip of the exhaust pipe with an angle grinder, such an animal came out, which cannot be suspended.

Grigory Popovsky: it is imperative to lubricate once a year the flexible drive located in the aluminum rod, after long-term operation (without lubrication for a year3), this cable simply melted the plastic guide tube inside the rod and stuck to it. they brought me in and my head does not even turn with my hands. How to tear off the adhered flexible shaft from the layer. The lithol was stuffed there and on the way. We bought it for laborers, obviously there was no careful care for it, in the end, when it hit the ground, the pant broke, I had to put on an iron pipe in the place of the fracture, everything works. but the mass has increased, the result: the scythe is so for itself for the lawn. so to speak educational)))))))

Read more:  How To Put A Belt On A Trimmer

Subba Terra: also did not listen to the electronic one for 5 years now the unit near the casing is heating up, the casing is already melted and does not want to be removed, we see it and the creator did not immediately take it off :). there is no lubricant. they say this sleeve with a hole costs 800 rubles. let’s see how.

dichlosoftvideo: I looked with enthusiasm, almost everything helped. The adjustment of the carburetor of the Stihl fs 55 trimmer in the video is performed in order to adjust the idle speed. Stihl fs 55 trimmer carburetor adjustment in the video how to adjust the carburetor. But why pound on the shaft? This can lower the resource of the node, which costs about seven hundred rubles. The part should be placed in place using a mandrel made of a duralumin tube or a profile.

Gary May: Thanks for the review. I have the same, it has been working like clockwork for 3 seasons.

How To Do a Basic Tune Up on a Stihl WeedEater. Video

Vitaly Evseev: a good reviewer, he didn’t even know that it needed to be lubricated, last year I bought one, but from the video it is clear that it is not necessary to disassemble it for lubrication, just remove the well-to-do casing, unscrew one bolt and fill it with grease. Thanks for the review, Like.

Dmitry Ivanov: It is not recommended to store gasoline in plastic bottles for a long time. DIY Stihl trimmer repair Stihl fs 38. It becomes harmful to the carburetor

Infectant: Well guys!)))

Stihl fs 55 trimmer carburetor repair photo

Stihl fs 38 lawn mower repair

Repair of Stihl lawn mowers in St. Petersburg. view prices!

Do-it-yourself Stihl fs 55 lawn mowers repair. Njkmznnb.ru

Repair of Stihl lawn mowers from the Abris company

Adjust the carburetor of the lawn mower with your own hands, repair and adjust, the principle of robotic attachment, video

Stihl ms-180 chainsaw repair

How to repair a lawn mower yourself. Jiminy.ru

stihl, trimmer, carburetor, adjustment

DIY Stihl fs 55 lawn mowers repair. Str24.ru

Stihl lawn mowers carburetor repair

Carburetors for lawn mowers, chainsaws, motor pumps, motor cultivators

lawn mower Stihl. overview of models Stihl FS55, Stihl FS38, Stihl FS130, spare parts, video

Trimmer petrol Stihl FS 55

DIY lawn mowers Stihl fs 55 repair

andzej ksevickij: the opepany tada are noticing the paucho with their noses, it is clear why they started from the wrong end.

Vanja Kavka: instruction on Stihl lawn mowers with detailing who needs https://goo.gl/gD3jt7

Kostya Demchenko: why was it necessary to pull out the plastic sleeve from the shaft. it was necessary to pull out the cable, make a lock and insert it from the engine side!

Andrey Vinichuk: sorry lawn mower Stihl FS 55

Andrey Vinichuk: Thanks for the review, the question of the Stihl FS 5 lawn mower, the traction disappeared when the trigger was pulled, disassembled the handle, the cable is in place, when the cable is pressed it does not return to the opposite position, which means the cable popped out near the engine did not know where it ends and began to disassemble the white part of the lawn mower unscrewed a few screws by loosening the bar mount, the bar protruded out of the engine, noticed the cable attachment in the engine and fixed it, put the bar in place, but at startup, it seems to me, the sound became different, pulled the bar again and noticed a round one at the very end of the bar, and at the end small square.

Repair of lawn mowers Stihl fs 38 repair of a flexible shaft If the chainsaw or lawn mower STARTS BADLY). A little about jewelry repair of carburetors. Trimmer Stihl FS 55. Life in the country. Chinese lawn mowers. is it worth buying? Husqvarna 240 carburetor repair (Part 1). Oleo-Mac sparta. The reason for the overflow of fuel and the lack of idling. Chinese lawn mower will not start. Diagnostics and repair. the lawn mower stalls. The Chinese lawn mower won’t start. It’s interesting. Stihl FS-55 (Lawn Mower) TEST ORIGINAL Stihl FS 55 not picking up steam? yes well it to the bath. Why the lawn mower won’t start. Husqvarna. Poorly working, stalling. An interesting case. Stihl FS55-repair. STRONG VIBRATION WHEN OPERATING THE MOWING How to lubricate the boom shaft. Stihl ms 361. Chainsaw won’t start.

If you notice that the cutting element continues to rotate at idle speed on the Stihl FS 55 lawn mowers after a long period of operation, then you need to adjust the carburetor.

Why turn the LA adjusting screw counterclockwise until the cutting element stops rotating.

This channel is dedicated to reviews of techniques that we encounter in everyday life.

If you want to keep abreast of the latest news, I recommend that you subscribe to this channel. New videos, I post regularly.

Many thanks to everyone who reposts my video clips, thereby helping the channel to develop into.

It is inherent in man to ennoble the place in which he spends the lion’s share of his time. Residents of cities resort to the services of designers, or they themselves try to change something in their home, buy new furniture, wallpaper, so that when they come home after a hard day, they can mentally rest and relax in a favorable environment.

Residents of their own homes outside the city have completely different concerns and requirements. It is necessary to mow shrubs, grass, various dead wood in a timely manner, carefully monitor the state of the personal plot and garden.

It is clear that this requires a slightly different means of achieving comfort. And here a new brainchild of engineering comes to the fore. lawn mowers from Stihl.

The history of this German brand dates back to 1926. At the initial stages of its development, the company was engaged in the production and sale of various components for washing and steam machines. It all began, like many.

I want to share my experience in operating the Stihl FS 36 and FS 38 trimmers, maybe someone will be useful. My first trimmer FS 36 1999 onwards, assembled in the USA, worked for 7 seasons in three areas, burned about 60-70 liters of mixture (120-140 hours) on native oil in a ratio of 1:40, 95 Sibneft gasoline. There were no problems with the engine, I didn’t even change the candle, I cleaned the foam air filter and that’s it. The 4130 FS 36 engine is quite interesting. the front starter, cantilever crankshaft, single ring piston, carburetor and muffler are located at the rear. At the same time, it has the largest working volume of 30 cubic cm. from trim tabs and a 0.5 liter tank on the side. Very high-torque at medium revs and the exhaust sound like a b / p “Friendship”))) And the body is narrow, which is more convenient to work. Disassembled from TO on FS 36, lubricated the flexible shaft with ALPINA gear grease and the rod tip, changed the bobbin. The line used a round 2.4 mm ALPINA, an excellent line, and it was not better for sale at that time. Shtilevskaya 2.4 mm will be worse. For 7 years.

Replacing the O-ring, the accelerator in the carburetor Stihl FS55 lawn mowers (benzotrimer) Preparing the fuel mixture for the Stihl fs 55 petrol trimmer. Repairing Stihl FS 130 lawn mowers. The trimmer is not picking up speed, what should I do? PRO lawn mower Stihl FS 55. lawn mower Stihl FS 55. repair of the Stihl FS55 mower. Stihl FS 55. carburetor adjustment (idle). Don’t throw away the blender! Do-it-yourself engraver. How to distinguish a copy of Stihl 180 from the ORIGINAL.

00:41. Not gaining momentum
01:32. When jerking the starter from under the finger, whistling is heard. compression is normal
04:33. Technka loves cleanliness
05:00. completely disassemble the carburetor
05:22. carefully remove the membrane
05:36. we disassemble the primer
05:47. the fuel pump membrane is intact
06:26. in a yellow bottle. technical alcohol
07:04. the needle valve works
07:10. in the carburetor itself. the second filter in the form of a fine mesh. Was jammed.
07:39. for reliability, removed and cleaned the needle valve
08:46. we blow the jet
10:00. put back the needle valve
11:00. screw the jet into place
12:33. the first time I put the membrane incorrectly. then I took it apart and.

Lawn maintenance is simple: watering the grass is enough, preventing a variety of weeds from appearing and periodically mowing. And if the first two jobs do not cause any particular difficulties, then difficulties arise with a haircut. A scythe is traditionally used to cut grass, but this is a tool that requires experience and considerable.

Choosing Stihl lawn mowers

Shtil lawn mowers can help out.

No video.

Video (click to play).

Greetings! My name is Petr. From my youth I loved to assemble car models and paragliders, later my hobby grew into something more and for a long time I worked as a foreman in the company “husband for an hour”. For many years of experience, a huge number of different schemes and implementations of repair and do-it-yourself installation of various devices turned out to be in my piggy bank. Not all “recipes” belong to me, but I believe that such knowledge should be in the public domain. This was the reason to create this site.

Principle of operation

The carburetor is a power system module in which liquid fuel and air are mixed before being fed into the engine cylinders. Mixing and flow are adjusted accordingly depending on the tool and its mode of operation.

The carburetor device for lawn mowers is the same for almost all cases. It belongs to the category of float devices. The latter provide stable parameters of ready-made mixtures.

The principle of the module is as follows.

  • Air enters the body of the air damper tube. The latter increases or decreases the air flow depending on its position.
  • In the area where the hole for the gasoline supply is formed, the tube has a narrowing. a diffuser. Here the flow rate increases.
  • Fuel from the float chamber is fed through the nozzle into the tube. The float level determines the amount of fuel supplied. Since the pressure in the chamber is normal, and in the tube it is low due to the greater rarefaction of the air, gasoline is sucked in through the nozzle.
  • The accelerated air flow picks up the fuel and atomizes it, forming an air-fuel mixture of the desired density.
  • The mixture is sucked into the cylinder through the pipeline.

The more open the air damper in the tube, the higher the density of the air flow, and, therefore, more fuel enters the cylinder. Setting up the carburetor of lawn mowers is reduced to setting such a ratio of flaps at which the density of the fuel mixture becomes optimal.

Signs of imbalance

Debugging the carburetor must be done during the manufacture of the device. As a rule, the owners will find out about the need to adjust the fuel supply with their own hands only after serious enough breakdowns, in the process of correcting which, the module was removed and, for example, cleaned.

The following are the symptoms of a configuration failure:

  • starts, but the engine immediately stalls. since the engine can only work when a certain amount of gasoline is supplied, with too “lean” fuel, that is, blocking the supply channel, the engine will stop;
  • too high fuel consumption, a lot of exhaust gases. the result of incomplete combustion of the mixture. In this case, on the contrary, there is too much fuel and the mixture is too dense.
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The carburetor for lawn mowers Stihl, Makita, Husqvarna and others is adjusted using the adjusting screws. Sometimes the reason for the malfunction is a violation of fixation. due to vibration or damage to the protective cap. Such a breakdown can be detected by simply trying to turn the screw slightly: if the fixation is not rigid, it is worth checking the setting.

Adjustment and repair of the carburetor lawn mowers

The trimmer does not belong to complex household appliances, therefore, most of its breakdowns are mechanical in nature and are quite successfully eliminated with their own hands. Even if the engine fails for serious reasons. damage to the piston ring, for example, repairs are reduced to replacing a part.

But even with a relatively simple design, such a part of the device as a carburetor needs to be adjusted.

DIY lawn mowers carburetor adjustment

Setting up the module does not apply to repair and replacement of spare parts is not required. In this case, the lawn mowers carburetor repair kit will not be needed.

Three screws are provided for debugging:

  • L. is regulated first, since it is responsible for supplying fuel at low speeds;
  • H. he is responsible for the supply of gasoline at high speeds, as well as for fuel consumption and temperature;
  • T. it is used to debug idle.

There are options, as a rule, this is the carburetor of a Chinese lawn mower, when only one screw remains on the body for debugging. for adjusting the idle speed. This does not mean that the module is configured automatically. it means that it will be difficult to carry out even such a type of repair as debugging. In the photo. adjusting the carburetor of a Chinese lawn mower.

  • The module is configured only when the engine is warm: for this, the device is pre-switched on for 10 minutes. If the mowing head rotates at idle speed, then the debugging is started immediately: turn the screw T counterclockwise until the rotation stops.
  • Adjustment begins with screw L. The screw is turned to the right and left until it finds such a position at which the idle speed does not become maximum.
  • Then the screw is turned ¼ turn counterclockwise. This will be his working position.
  • Idle speed must be adjusted by turning counterclockwise to increase the number of revolutions and clockwise to decrease it. Its debugging consists in achieving such a mode in which a sufficient number of revolutions are made before the start of rotation of the mowing head. In this case, the engine must work stably at different positions.
  • The position of screw L is determined last. at maximum speed, the trimmer should not work for more than 10 seconds. The throttle opens, the screw turns clockwise, very slowly, until the decrease in the number of revolutions is audible.
  • Then, also slowly, the screw rotates counterclockwise until the motor starts to malfunction. Then the screw is turned back clockwise until the engine starts working normally again.

If there is a tanometer, and if the recommended rpm values ​​are indicated in the product passport, the correction can be made more accurate, focusing not on hearing, but on the readings of the device.

The adjustment of the carburetor of the lawn mowers in the video was carried out by ear.

8 comments on the entry “Adjustment and repair of the carburetor lawn mowers”

    Dmitry Pavlovich 07/04/2016

Please clarify. In the adjustment section p. 5, screw L. error? Should you read screw A? Thank you.

prompt the initial position of the screws H L LA

SHOW START POSITION

prompt the initial position of the screws H L LA

Thank you very much for the video about the accelerator and didn’t know, but the defect is very important and creates a huge problem that almost everyone is silent about. BRAVO….

Maybe all the same tachometer is a rpm meter, not a tonometer blood pressure meter

and I have L, H, LA, it’s LA instead of T?

The video shows some kind of tightness, so you need to be able to chew snot.

Adjusting the carburetor lawn mowers, trimmer

Increased fuel consumption and the rapid formation of carbon deposits on the spark plug when using a properly prepared fuel mixture indicate the need to adjust the carburetor. Here’s how to tune trims with carburettors with one fuel adjusting screw.

Fuel supply adjustment

Start slowly turning the fuel mixture adjustment screw until the engine starts to stall or stalls if you do not have time to catch the moment. After that, unscrew the screw a quarter of a turn if the engine did not stall, or half a turn if it stalled. Start the stalled engine. Check by opening the throttle as the engine picks up speed. Continue to unscrew the screw a quarter of a turn until the engine starts to accelerate steadily during gas blowing. This will be the moment of the most economical stable engine operation. For the PRORAB-8406 petrol trimmer, the adjusting screws are turned clockwise, unscrewed. against, for some other brands the lawn mower can be the other way around.

Carburetor adjustment

Flush the air filter before adjusting the carburetor. It is recommended to rinse it after every 10 hours of operation. After that, you can start adjusting. The photo shows the PRORAB-8406 petrol trimmer carburetor as an example. The numbers indicate the adjusting screws that we will use.

PRORAB-8406 petrol trimmer carburetor adjusting screws

The purpose of the adjusting screws:

  • Fuel mixture adjustment screw.
  • Idle adjustment screw.
  • Maximum speed limiting screw.

Start a lawn mower and wait for it to warm up.

Fuel ratio

I read somewhere that if different mixing ratios are indicated in the operator’s manual for the lawn mowers and on the oil canister, the proportion indicated in the manual should be used.

For a long time he did this. excess oil flowed from the engine onto the gas tank and carbon deposits were constantly formed on the candle, since the manual indicated the proportion for the run-in engine 1:25, and on the canister. 1:50. After switching to a ratio of 1:50, the appearance of oil drips stopped. The candle continued to burn, but at a lower intensity (the carburetor was not yet adjusted).

Until now, some users of gasoline-powered tools determine the proportion of the fuel mixture “by eye”. If during the preparation of the mixture the amount of oil is underestimated, after a while an extraneous sound may appear immediately after starting the engine, gradually disappearing during warming up, and the engine stops with a sharp jerk. Continued use of the trimmer in this mode will lead to its failure.

Spring may interfere

My first attempt to adjust the carburetor of the lawn mowers did not work, as the spring of the screw for adjusting the fuel mixture interfered with. The factory spring turned out to be too thick in the compressed state and did not make it possible to reduce the fuel supply to the required level. I had to pick up another spring and continue adjusting after replacing it.

Fuel mixture adjusting screw with spring

In the photo above the factory spring, below the adjusting screw with the matched spring. I am writing about this because I’m not sure if this is an isolated case, and someone else may face the same situation.

lawn mower or trimmer

A trimmer is a broader concept than a lawn mower (lawn mower), as it can also be electric. A petrol trimmer and a lawn mower are one and the same.

Some authors claim that the trimmer is a weaker tool than a more powerful lawn mower, which can be used for mowing shrubs. Personally, I have a tool with a maximum power of 1.7 kW and capable, as stated in the instructions, to mow small shrubs up to 10 mm thick. The user’s manual is called “Petrol trimmer.”.

Idle speed adjustment

We start adjusting low speed. The screw limits the return movement of the throttle lever. by turning it, we increase the idle speed, unscrewing it, we decrease it. Adjust so that the engine runs confidently at low revs and even slightly accelerated (for better starting), but so that the line reel or knife does not rotate, and there is a sufficient reserve of revolutions before they start spinning. If the engine starts poorly, increase the idle speed even more.

Adjusting the carburetor lawn mowers Stihl FS 38

  • First you need to stop the engine;
  • Then install the mowing head;
  • The next step is to check the air filter, and if the filter element is not in good condition, it should be replaced;
  • It is necessary to completely turn the idle speed adjusting bolt clockwise until it stops, and then 1.5 turns counterclockwise;
  • After starting the device, you should wait until the engine warms up;
  • Using the idle stop bolt, the owner must correct the idle speed to immobilize the cutting tool.

It is not difficult to deal with all the procedures, the main thing is to get serious about the matter and tune in to work. over, many owners note that you can independently carry out not only tuning the carburetor, but also replacing parts. Underlying schemes will be excellent assistants in this matter.

Specifications and features

  • Mowing width: 23 cm;
  • Fuel tank capacity: 0.33 l;
  • Weight: 4.1 kg;
  • Bar: curved;
  • Line thickness: 2mm.

Thanks to the manual fuel pump, a person can easily pump fuel into the carburetor. This is especially important in a situation where the mower has been idle for a long time. Constantly adding fuel will allow you to quickly start the device even after a “long vacation”.

For other useful information, see the following document:

The curved bar of the Stihl FS 38 lawn mower with a rounded handle is worthy of attention. Thanks to this design, the device easily copes with cleaning the area, even in narrow or confined spaces.

All controls are located on a comfortable handle, so it takes a long time to look for where and what to switch is not necessary. During work, such a moment is very important, because the operator can not be distracted and without unnecessary movements adjust the operation of the machine.

The Stihl FS 38 trimmer. a functional unit you can trust

The Stihl FS 38 trimmer is probably well known to all fans of quality garden equipment. People who have once tested the brand’s products in practice rarely switch to products of other brands, because German quality conquers completely and completely.

This lightweight gasoline device is quite compact, it is ideal for cleaning small backyard areas. Many private sector owners prefer this particular “helper”, because it does an excellent job and demonstrates a high level of productivity.

0.9 liter two-stroke engine from. can handle heavy loads and the AutoCut mowing head can handle even relatively tall bushes and weeds. The D-handle easily adjusts to the height of the operator, so the new owner will be able to adapt the unit completely to himself.

Since the displacement of the engine is 27.2 cm3, the Stihl FS 38 trimmer can reach a fairly high speed. The presence of a special quick start system eliminates the need to start the unit several times in a row, because it will start working on the first try.

Pros and cons of the model:

  • Excellent performance
  • Compactness;
  • Low weight;
  • Functionality;
  • Endurance;
  • The ability to independently adjust the operation of the elements;
  • The presence of a manual fuel pump;
  • D-handle, etc.

Naturally, the list of positive aspects should include the verification of the brand itself.

  • The need to constantly check the fuel level;
  • Small motor resource;
  • Low power;
  • High cost;
  • Lean equipment.

The presence of not particularly catastrophic shortcomings of the model does not negatively affect the popularity of the unit, because the ideal technique simply does not exist.