What to do if Jonsered CS 2152 engine stalls when throttle released?
If your Jonsered Chainsaw engine stalls when the throttle is released, try the following: Adjust the L screw, adjust the H screw. Also, check for a faulty pump diaphragm, a needle valve set too high, a sticking needle valve assembly, or faulty diffuser jets.
Why Jonsered Chainsaw has low power?
If your Jonsered Chainsaw is experiencing low power, consider these potential solutions: Adjust the H screw, check for a blocked fuel tank vent or fuel filter. Inspect the impulse channel for leaks or blockages. Ensure the cover on the carburettor pump side is secure, and examine the pump diaphragm for faults. Also, check the air filter for blockages, the needle valve assembly for sticking, and the metering system for leaks or incorrect assembly. Look for loose diaphragm rivets or holes in the diaphragm, and check for a leaking control diaphragm or cover plate.
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