Cleaning The Trimmer Muffler

Scooter muffler cleaning with your own hands
Scooter muffler cleaning with your own hands During the operation of the scooter, residues of fuel and oil combustion gradually accumulate in the exhaust system, which leads to noticeable deterioration in operation,

Chemical

Can be chemically cleaned. This method is considered more effective in comparison with the use of a cable. As a cleaning "chemistry" you need to take a household sewer pipe cleaner, such as "Mister Muscle", "Cat" or another similar alkaline-based cleaner.

By the way, the efficiency of cleaning the exhaust pipes depends on the quality product used.

cleaning the trimmer muffler

First, plug one end of the exhaust pipe, ensure tightness, then pour powder into the muffler, fill it with hot water, and leave it that way for a day.

The next day, pour out all the "dirt" along with the cleaning compound and rinse well with running water from a hose. After that, dry and install on the scooter.

Scooter muffler cleaning with your own hands

During the operation of the scooter, residues of fuel and oil combustion gradually accumulate in the exhaust system, which leads to noticeable deterioration in operation, whether it is a two-stroke or four-stroke engine.

An exhaust system clogged with carbon deposits can cause a decrease in engine power, interruptions in operation, and excessive fuel consumption. When driving with a sudden opening of the throttle, the engine responds very slowly and the acceleration of the scooter is very weak.

The exhaust pipes of two-stroke engines are more susceptible to carbon fouling than four-stroke engines, although, in two-stroke engines, this problem more affects the operation of the engine. The motor is swamped with its exhaust gases.

It is quite easy to identify contamination, you need to dismantle the part and blow into the inlet pipe. If at the same time resistance to air flow is felt, then it is necessary to clean. There are several cleaning methods that differ in their effectiveness and labor intensity.

Mechanical

The most radical, at the same time, the most laborious method, which gives the best result – cutting, and removing carbon deposits with various scrapers and tools, and subsequent welding by welding. In this case, you need to know the internal structure of the system. Usually, a rectangular window is cut from the side, through which the work is carried out. After the muffler has been welded, it will have to be painted to restore the aesthetic appearance.

It is easier to remove carbon deposits with a wire rope. You need to take a piece of cable of the required length, clamp one end of it into the chuck of an electric drill, and fluff the other, and gradually move it inward, turning the cable with a drill at low speed. In some cases, a positive result is obtained.

Scooter muffler cleaning with your own hands

During the operation of the scooter, residues of fuel and oil combustion gradually accumulate in the exhaust system, which leads to noticeable deterioration in operation, whether it is a two-stroke or four-stroke engine.

An exhaust system clogged with carbon deposits can cause a decrease in engine power, interruptions in operation, and excessive fuel consumption. When driving with a sudden opening of the throttle, the engine responds very slowly and the acceleration of the scooter is very weak.

The exhaust pipes of two-stroke engines are more susceptible to carbon fouling than four-stroke engines, although, in two-stroke engines, this problem more affects the operation of the engine. The motor is swamped with its exhaust gases.

It is quite easy to identify contamination, you need to dismantle the part and blow into the inlet pipe. If at the same time resistance to air flow is felt, then it is necessary to clean. There are several cleaning methods that differ in their effectiveness and labor intensity.

Read more:  Which Trimmer is Better to Choose

Mechanical

The most radical, at the same time, the most laborious method, which gives the best result – cutting, and removing carbon deposits with various scrapers and tools, and subsequent welding by welding. In this case, you need to know the internal structure of the system. Usually, a rectangular window is cut from the side, through which the work is carried out. After the muffler has been welded, it will have to be painted to restore the aesthetic appearance.

It is easier to remove carbon deposits with a wire rope. You need to take a piece of cable of the required length, clamp one end of it into the chuck of an electric drill, and fluff the other, and gradually move it inward, turning the cable with a drill at low speed. In some cases, a positive result is obtained.

Chemical

Can be chemically cleaned. This method is considered more effective in comparison with the use of a cable. As a cleaning "chemistry" you need to take a household cleaning agent for sewer pipes, such as "Mister Muscle", "Cat" or another similar agent on an alkaline basis.

By the way, the efficiency of cleaning the exhaust pipes depends on the quality product used.

First, plug one end of the exhaust pipe, ensure tightness, then pour powder into the muffler, fill it with hot water, and leave it that way for a day.

The next day, pour out all the "dirt" along with the cleaning compound and rinse well with running water from a hose. After that, dry and install on the scooter.

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

Purpose of adjusting screws:

  1. Fuel mixture adjustment screw.
  2. Idling adjustment screw.
  3. Maximum speed limiting screw.

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

From personal experience

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 when compressed 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.

Dismantling and cleaning the muffler

If the engine works fine at low speeds, and at high speeds it starts to stall, the reason may lie in the muffler spark arrester, clogged with combustion products.

  • Remove the muffler;
  • Disassemble (there are also non-separable models);
  • Clean from carbon deposits using detergents;
  • Dry with a hairdryer;
  • Refit.

Dry cleaning is unacceptable, as the soot contains carcinogens, the inhalation of which is dangerous to health. After removing the muffler, close the outlet with a clean cloth.

Interruptions in the operation of the chainsaw signal a possible clogging of the muffler

To prevent the muffler from clogging, it is necessary to monitor the composition of the fuel mixture. The amount of oil should not exceed the rates recommended by the manufacturer. Poor oil quality also negatively affects engine performance.

Checking the ignition system

The first thing to do if a chainsaw breaks down is to inspect the spark plug by disconnecting the wire and carefully unscrewing it with a special key.

Read more:  Electric Garden Trimmer Which Is Better

The components of the chainsaw ignition system: 1 – flywheel with magnets, 2 – ignition module, 3 – spark plug, 4 – high voltage wire

Unscrew the spark plug to check its condition.

Her appearance says a lot:

  • Dry. Most likely, the fuel mixture does not enter the cylinder. It’s not about the ignition system, so the plug is screwed back in.
  • Strongly splashed with fuel. The reason for the excess fuel mixture lies either in the violation of the starting rules, or in the incorrect adjustment of the carburetor. The spark plug is thoroughly wiped, shut off the fuel supply and turn on the starter – to remove excess fuel and ventilate the combustion chamber. Then the candle is put in place and the mechanism is started again.
  • Covered with black carbon. This may indicate the use of low-quality oil, an incorrectly adjusted carburetor, or an incorrectly calculated gasoline to oil ratio. The candle should be washed, cleaned of carbon deposits with a sharp object (awl or needle), wipe the electrodes with a sandpaper and put in place.

When checking the candle, you need to pay attention to the gap between the electrodes: it is considered normal from 0.5 to 0.65 mm. A damaged or worn gasket must be replaced.

A large amount of black carbon on the spark plug indicates a malfunction of the engine.

To be sure, you should also check for a spark. To do this, put the ignition cable on the spark plug, connect the plug nut and the cylinder with pliers, start the starter and watch for the spark. If it is missing, the plug must be replaced. If the new spark plug also does not produce a spark, the problem is in the high-voltage wire or in the broken connection with the spark plug.

Fuel supply system repair

Fuel may not enter the cylinder for the following reasons:

  • Dirty fuel filter. Remove the fuel hose and check how the fuel flows. If the jet is weak, the filter may need to be cleaned. It is taken out through the filler hole of the fuel tank and cleaned; in case of severe contamination, it is replaced with a new one. As a preventive measure, it is recommended to replace the fuel filter every three months.
  • Clogged breather (holes in the fuel tank cap). Check also by disconnecting the hose, in case of blockage, clean it with a needle.
  • Lack or insufficient amount of fuel. There may be several reasons for the malfunction. The first reason is a clogged air filter. Air ceases to flow into the carburetor in the required amount, in this regard, due to a too rich fuel mixture, the engine’s operation is disrupted. The contaminated filter is carefully removed, cleaned and rinsed in water, then dried and reinstalled.

Another reason is improper adjustment of the carburetor. The adjustment is made with three screws.

Timely replacement of the fuel filter ensures full fuel supply

The fuel hose and choke actuator must fit snugly against the fittings

The throttle cable must be in place

During work, you must use the instructions, otherwise you can only make it worse.

And the last reason is a violation of the integrity of the membrane or clogging of the carburetor channels.

To repair the carburetor yourself, you need to get acquainted with all its parts.

All parts must be clean, dry and in good condition.

Constructive components of the chainsaw

All chainsaws are similar in structure, regardless of whether they are European (ECHO, Stihl, Husqvarna) or domestic (Kedr, Ural). The main elements are located inside the body – the fuel tank and the engine, and outside the starter, the handle, the saw part (tire) with the chain. A sharp jerk of the cable starts the engine, which starts the saw blade.

Read more:  Champion Trimmer Won'T Start

To begin with, we suggest that you familiarize yourself with the rollers, which show how the chainsaw works and how it works:

From time to time, the saw malfunctions, which require disassembly to eliminate. What can happen to such a simple mechanism as a chainsaw? At least the following:

  • Ceases to start;
  • Starts up, but soon stops;
  • Ceases to function in the cut;
  • Loses its power;

Most of the malfunctions are associated either with interruptions in the operation of the engine (fuel supply system, exhaust system, ignition, cylinder-piston part), or with malfunctions of other systems and components (clutch, chain brake, tire, lubrication system). Consider the most common breakdowns and techniques for their elimination.

A working chainsaw starts with one jerk and does not fail in the cut

Checking the ignition system

The first thing to do if a chainsaw breaks down is to inspect the spark plug by disconnecting the wire and carefully unscrewing it with a special key.

The components of the chainsaw ignition system: 1 – flywheel with magnets, 2 – ignition module, 3 – spark plug, 4 – high voltage wire

Unscrew the spark plug to check its condition.

Her appearance says a lot:

  • Dry. Most likely, the fuel mixture does not enter the cylinder. It’s not about the ignition system, so the plug is screwed back in.
  • Strongly splashed with fuel. The reason for the excess fuel mixture lies either in the violation of the starting rules, or in the incorrect adjustment of the carburetor. The spark plug is thoroughly wiped, shut off the fuel supply and turn on the starter – to remove excess fuel and ventilate the combustion chamber. Then the candle is put in place and the mechanism is started again.
  • Covered with black carbon. This may indicate the use of low-quality oil, an incorrectly adjusted carburetor, or an incorrectly calculated gasoline to oil ratio. The candle should be washed, cleaned of carbon deposits with a sharp object (awl or needle), wipe the electrodes with a sandpaper and put in place.

When checking the candle, you need to pay attention to the gap between the electrodes: it is considered normal from 0.5 to 0.65 mm. A damaged or worn gasket must be replaced.

A large amount of black carbon on the spark plug indicates a malfunction of the engine.

To be sure, you should also check for a spark. To do this, put the ignition cable on the spark plug, connect the plug nut and the cylinder with pliers, start the starter and watch for the spark. If it is missing, the plug must be replaced. If the new spark plug also does not produce a spark, the problem is in the high-voltage wire or in the broken connection with the spark plug.

Dismantling and cleaning the muffler

If the engine works fine at low speeds, and at high speeds it starts to stall, the reason may lie in the muffler spark arrester, clogged with combustion products.

  • Remove the muffler;
  • Disassemble (there are also non-separable models);
  • Clean from carbon deposits using detergents;
  • Dry with a hairdryer;
  • Refit.

Dry cleaning is unacceptable, as the soot contains carcinogens, the inhalation of which is dangerous to health. After removing the muffler, close the outlet with a clean cloth.

Interruptions in the operation of the chainsaw signal a possible clogging of the muffler

To prevent the muffler from clogging, it is necessary to monitor the composition of the fuel mixture. The amount of oil should not exceed the rates recommended by the manufacturer. Poor oil quality also negatively affects engine performance.