How do I check compression on a Homelite H17 hedge trimmer to get it running or scrap it?

swc105, March 2009

babelfish????????????????

Buy compression tester- cost approx £10-£15

Remove spark plug,insert compression tester end and hand tighten. Squeeze throttle and at the same time pull recoil rope 2 or 3 times.

Put machine down an observe reading on the compression tester dial. Any reading below 110 psi means your compression is low

pleasant, March 2009

firstly remove the piston ring,then put the end of your finger in the hole and pull the starter cable.There will be a sucking sensation on your finger,it should pull quite hard the release when the piston reaches top dead center if it dosnt suck hard it will be your piston ring im afraid

babelfish, March 2009