Chain Saw Parts: Only runs with the choke on
If your chainsaw only runs with the choke on, it is likely an issue with your carburetor. Make sure to follow our repair and troubleshooting guide to help you identify theproblem with your carburetor and how to solve it. If you need specific repair instructions related to your model, refer to the manual provided by the manufacturer.
Carburetors
The choke is a plate that mostly covers the front opening of the carburetor. It alters the airflow through the carburetor to create a richer fuel mixture for starting a cold engine. If the carburetor is plugged, the engine will be starved of fuel and will not run. However, if the engine is plugged, the choke will pull more fuel through the carburetor's idle circuit and allow it to run. When the choke is turned off, the engine will die. Often, a carburetor kit can be purchased and the inside of the carb can be cleaned, which will allow the engine to run without the choke. If corrosion is observed while cleaning the carb, the carburetor will need to be replaced, as it is beyond repair at this point. ... Read more
Carb Kits
Cleaning the carburetor and replacing some of the internal parts with a new carb kit is a great way to get your carburetor running properly again. If the carburetor is clogged, it may only work with the choke engaged, which is not a good way to be running your engine.