How To Test The Ignition Coil On A Stihl Gas Trimmer

lawn mower stihl fs 38 no spark | Topic Author: Olesya

The braid does not start, it was dismantled and it turned out that there was no spark on the candle.

Anton In coils, there stands corny valbro, rather Chinese, buy at the market

Diana first look at what position the engine stop switch is. if in doubt, pull the wire, if it is closed to the body of the spark will not. if open, insert a screwdriver or a piece of metal and check so the candle may be bad. the tip under the elastic is made of wire and pierces the high-voltage wire. look what it touches the core inside. if not, remove the cover and see if the thin wire of the mass touches the gap between the ignition module and the flywheel, the gap is usually set either with a calendar or a piece of plastic from a pet bottle. if the gap is large, then the spark is weak or not, if the flywheel touches then there is no spark and failure of the ignition module is possible. if everything is fine and there is no spark then the module is for replacement. rarely, but it happens, cuts off the flywheel installation key, as a rule it warps and touches the module. if it is an analogue with a calm sticker, the shaft bends and there will be no spark due to the contact of the flywheel and the module, in this case tie a rope, unwind better and throw it further.

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Victoria was working now no spark

Tags: Gas Trimmer Does Not Start, No Spark

IF a lawn mow or chainsaw is BAD, the first prevention is \ If the chainsaw is badly started

How To Test The Ignition Coil On A Stihl Gas Trimmer



If the lawn mowing does not start or immediately stalls after start-up, it is necessary to check all the main components and assemblies in sequence. The verification algorithm is as follows:
-Fuel tank (fuel quality);
-Candle and candle channel;
-Air filter;
-Fuel filter;
-Exhaust channel.
These nodes are most often the source of major problems that can be fixed after a thorough inspection.

Video: How To Test The Ignition Coil On A Stihl Gas Trimmer

Checking the fuel mixture
Before starting the engine of the gas spit, check the availability and quality of the fuel mixture. Do not save, do not be greedy and do not be clever in this matter. Repair or replacement of the piston group will cost you too much (sometimes up to 70% of the cost of a new tool). It is necessary to prepare the oil-fuel mixture strictly according to the instructions. Calculate its quantity from real needs. Excess gasoline remaining after work over time loses its quality. If the quality of the fuel mixture is not in doubt, and the lawn mower stalls at start-up, the cause may be a filled candle. Here, for repair, an ordinary candle key (probably every motorist has one) and a spare candle will do.

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-We twist the candle and wipe it;
-Dry it thoroughly (do not calcine);
-The excess fuel in the chamber is drained through the spark plug hole and dried;
-We clear an old candle from a deposit by means of a file or a lady’s file;
-We set a gap with a distance of 1 mm (you can check with any coin);
-We return everything to its place and try to start a trimmer.
If the candle is working, the nest where it is completely dry and the lawn mower does not want to start, we lubricate the threaded connection with gasoline. It should be slightly moistened. No matter what wonderful spark a candle gives out, there is simply nothing to light up in a dry chamber.

If the trimmer motor still does not start, a cause such as the absence of a spark due to poor contact between the spark plugs and the high-voltage wire should be excluded. If the connection is high-quality, but there is still no spark, most likely, your ignition unit has “flown”. Here you can’t do without a master, because the part is not being repaired, but sold as a complete unit.

Diagnostics of lawn mowing filters
Another reason that the gas braid stalls may be an air filter. To exclude it, try to remove the filter and start the trimmer without it. If possible, then you will have to change the air filter to a new one, or at least blow out and thoroughly clean the old one.
A gas trimmer may not start up due to contamination of the fuel filter. This is the next step in our algorithm. Here we check the condition of the filter element and, if necessary, change it with a new one. When replacing, try not to leave the suction pipe completely without a filter, this is prohibited by any operating instructions. Haste can result in repair of the engine piston group.

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If the step-by-step troubleshooting algorithm does not give a result, and your braid still does not start or stalls, it is worth examining the carburetor and the engine itself. A clogged carburetor can be one of the reasons for unstable tool operation. Three main problems can be distinguished here:

Clogged channels or jets. All this is cleaned with special washes or purged with a powerful jet of compressed air from the compressor. Do not use needles and wire, as passage sections may be damaged;
Worn carburetor gasket. Exit. replacement of a failed gasket;
Violation of tightness. To check this indicator, you can use an ordinary household tonometer, replacing a manometer with a suitable one. Keep an eye on the readings: if they do not change, everything is fine, and if the pressure starts to fall, then some part of the carburetor is faulty. We’ll have to find it and replace it with a new one.