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", The manual for this model, and the parts breakdown, show a compression release valve. Check the electrode gap of the spark plug and ensure it is 0.02 inches. Pull trigger and set full choke. "datePublished": "2017-08-17", We will explain the causes of high compression and how you can quickly fix it to make it run smoothly. Fuel filters trap dirt and contaminants from the fuel to prevent them from damaging the engine. Stihl 024 - Sherlock Holmes issue - help needed here. Your email address will not be published. Unscrew the spark plug using a ratchet and screw the compression gauge in its place. I bought an old beater 621 Jonsered once that had very high compression, got it running well and sold it, made some money on it! The engine must be up to operating temperature, spray a light stream of water into the engine carb air inlet and the cold water shocks the hot carbon and the carbon flakes off and blows out the exhaust pipe. I would suspect the timing is too early. I pulled them over with plug out ,They seemed to pull normal and believe they were fuel locked. } First, remove the spark plug from the chainsaw. It is, therefore, necessary to determine if the problem has been remedied by adding fresh fuel. I used to have a Homelite that would do that if I left gas in it. If the compression is not produced in the engine at an appropriate level, it will not be able to convert fuel into energy. Indoor fly traps are an effective way to keep insects away from your home. I thought all the fuel was out but there was some in the line yet. The compression limit should also be doubled if the engine capacity is 100 CC. I missed the "no carbon". Because of an absence of lubrication, the chain saw system becomes brittle, resulting in excessive compression of the chain saw mechanism. The Stihl chainsaw is a two-stroke gas-powered tool that uses a substantial amount of compression to pull fuel from the tank, mix it with air and ignite it to produce energy that runs the chainsaw. I believe it was flooded, but I didn't think that little bit of fuel would make it that hard to pull but I guess so since it can't compress! Detailed, well-researched, and accurate home and garden information presented in an understandable format is our primary goal. You will notice the compression less. Every chainsaw engine has a different capacity depending upon its motor power. Manual for my Stihl saws and leaf blower says to scrape carbon out of the exhaust port. "author": { Without proper compression, the engine will not be able to suck and use the fuel for combustion.