Question about Husqvarna 21" Walk Behind Lawn Mower HVL 7021RC
After cooling, the butterfly will not close to choke. Have to remove air filter and manually close butterfly
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Posted on Jan 02, 2017
Remove your exhaust manifold. Look into the cylinder with a flash light. You are looking for scratches. Anything larger then a light fingernail is definite proof you need a new cylinder/piston assy.
If it passes that test do the following:
Pour mixed fuel straight into your cylinder until 1/4 full. Slowly pull your saw over while looking into the cylinder. If you see bubbles after the ring/rings go by then you need a new cylinder/piston assy. On rare occasions if no scratches are present on the cylinder wall or piston, you may be able to change just the rings.
Posted on Mar 31, 2009
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