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.
The 4 most common part(s) or condition(s) which cause the symptom Chainsaw won't start are listed below starting with the most likely. Check or test each item and watch any available videos.
RepairClinic Item # 1995890
If the chainsaw won't start, the carburetor might be clogged or have bad fuel in the float bowl. If old fuel was left in the chainsaw for a long time some of the volatile ingredients may have evaporated, leaving a thicker, stickier product that is more like varnish or shellac. This sticky fuel can clog up the small jets and ports in the carburetor and it can be difficult to burn making it hard to start the engine. The only solution is to drain the old fuel from the float bowl and thoroughly clean the carburetor with carburetor cleaner. If that isn't effective, replace the entire carburetor.
RepairClinic Item # 1985328
If the chainsaw engine does not start the spark plug may not be getting voltage. Power to the spark plug is provided by the ignition coil. The ignition coil is mounted next to the flywheel. As the flywheel spins an electrical current is induced by the ignition coil. If the ignition coil is defective it will need to be replaced, it is not serviceable.
RepairClinic Item # 1995848
The recoil starter assembly has a rewind spring which spins the pulley backward to rewind the starter rope. If the rewind assembly is broken the rope will not rewind and the engine does not start.
RepairClinic Item # 1976907
The recoil starter pulley winds up the starter rope when not in use. If the recoil starter pulley is broken or stuck it may not rewind the rope and the engine does not start.