Stihl Chainsaw Engine Stops After a Few Seconds

The chainsaw small engine often has a separate model number. Use the small engine model number for a complete list of symptoms and parts. Watch our model # lookup video for help finding the model number.

MS 290

The 1 most common part(s) or condition(s) which cause the symptom Chainsaw engine stops after a few seconds are listed below starting with the most likely. Check or test each item and watch any available videos.

Grid is 1 inch square
Gas Cap - Part # 1810038 Mfg Part # 125-600

Gas Cap

RepairClinic Item # 1810038 Aftermarket (Non-OEM) part

The gas cap on YOUR chainsaw is designed to let a very small amount of air into the tank. This is necessary because as fuel is consumed a vacuum is created in the fuel tank. The gas cap has a tiny vent to let air into the tank and equalize the pressure. If the gas cap vent gets clogged air can't enter the tank and eventually the vacuum pressure in the tank exceeds the vacuum pressure of the engine, and the engine stalls. The vent often cannot be cleaned because it is made of a semi porous ceramic material. If the gas cap vent is clogged, replace the cap.


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