buckeyefarmer
Epic Contributor
Wow, i would never have known that would be the issue.
Wonder if that would be my problem on an old push mower not running right, starts, but keeps reving and no power.In my experience with an old B&S engine, the key does not have to be completely sheared. Even a partial shear or wear is enough to change the timing leading to no or hard starting. I also would check the mounting of the coil too. A change there could have the same result as a sheared key.
Wonder if that would be my problem on an old push mower not running right, starts, but keeps reving and no power.
If you are getting spark, and it won't pop on ether, check to make sure that the flywheel key didn't shear, thus throwing off ignition timing. I've had that happen with a violent backfire.
Wonder if that would be my problem on an old push mower not running right, starts, but keeps reving and no power.
If you are getting spark, and it won't pop on ether, check to make sure that the flywheel key didn't shear, thus throwing off ignition timing. I've had that happen with a violent backfire.
My guess is ethanol has started breaking down rubber or the varnish that's built up in your carb. Either clean it or replace it would be the best place to start. With a sheared flywheel key the engine will not run.
As for the flywheel key, did you spray water in the carb when the engine was running? If so then it's very possible that you got some into the cylinder. The engine stopping quickly (because it can't compress water) can also cause the key to shear. It can cause much more serious problems like a bent connecting rod too. I would check (or change) the engine oil to make sure there's no water in it.