John Deere Mower Engine Issue

if its a riding mower look around for new engine since cylinder wall can be damaged

need carb rebuilt one problem may need valve job carb rebuild 80.00 valve job 100.00 per cylinder have to take in to shop for this

cloud be broken ring do a compression test see if you have bad cylinder copression should be 100 lbs in it if not broken ring

if that is the Kohler 14 hp motor it may have the spark control untit on the motor cover. I recently ran into one like that and switched the coil out from a blown 20 hp kohler engine. I just taped up the excess wires and made sure they were not near any moving parts. The mower ran fine after that. Kohler wants about $160.00 for a spark control unit. There have been no repercussions since making the switch.

it is to the side of the tin valve cover on the front of the engine

Check ingition switch, check battery voltage 12-12 1/2 volts,check in run position same voltage, check in start position same voltage
We've check switch first. If not problem we've check the points for proper voltage and opening and closing.

This model is known for shearing the flywheel key.

try cleaning up the points in the magneto with some emery cloth.

I believe they are 8mmX35mm.

If there is no #'s you can call John Deere or go on there web site and should find some info.If you have the model of the tractor john deere can tell you what engine you have. If you have an engine # they can also help you.Good luck. donnyb60.