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It is a 16HP V-Twin engine, horz, shaft. Was overhauled maybe,carb was bad and replaced, when trying to start it cranks fine except at times it kicks back hard and will stop cranking at times. Both ign. coils were replaced engine has 150# compression on each cylinder. Engine is for a high pressure washer. Key looks good so timing should be good. there are no numbers anywhere for model #.

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Is your blade attached while your trying to start this engine? The blade has to be attached since lawn mower engines have a lightweight flywheel. The blade acts as a counterweight. What happened before the mower became hard to start and kick back? Did it happen all of a sudden? Did you hit something, then it started to happen?---
Is this an overhead valve engine or an L head engine? -----
IF you do have the blade attached and everything is intact check the following:
Armature air gap---
Valve Clearances-------
Kill wire....temporarily disconnect and see if it still kicks back, its a long shot, but it could be shorting out against the engine.--------

the correct gap between the flywheel and coil the Armature gap. .005 to .015in is sufficient .check out.
Please do rate the solution. Thank you for using fixya.keep updated. thanks.

Posted on Jul 16, 2009


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