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Mower Problem

drace600's Avatar
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07-23-03, 12:12 AM   #1  
briggs 3.5 hp mower

3 to 5 year old briggs 3.5 horse mower. when I pull the start cable it just spins freely untill it stops. any ideas what this could be ? Flywheel?

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07-23-03, 10:18 AM   #2  
Hello: drace600

If the engine spins as though the spark plug was not installed, the engine does not have any compression. Very possible a valve is stick opened slightly. This condition will allow the engine to spin freely and there will not be any compression.

You can remove the breather cover, on the side of the engine block, then pull the rope or spin the flywheel and watch the lifters raise and lower. If they do not, the one not moving is stuck.

Most likely I haven't covered all of the potential possibilities. The other resident small engine service and repair professionals may offer additional suggestions, advice & help.

Check back on your question several times over the next few days for additional replies.

Small engine repair parts are available at all local small engine repair shops and or lawn mower repair shops. They are listed in the phone book directory in every town.

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