Why won't my Husqvarna Chainsaw run at full throttle?
- AAndrea ParkerAug 19, 2025
If your Husqvarna Chainsaw won't run at full throttle, it could be due to several reasons: * Adjust the H screw. * A blocked air filter, fuel tank vent, or fuel filter. * A blocked or leaking fuel line or impulse channel. * A loose or damaged fuel hose. * A loose cover on the carburettor pump side, or a faulty pump diaphragm. * A leaking air intake hose or loose carburettor mounting bolts. * A needle valve set too low, a damaged or incorrectly assembled metering system, or a sticking needle valve assembly. * A leaking control diaphragm/cover plate or a blocked silencer.