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Curtis B.
Curtis B., Technician
Category: Small Engine
Satisfied Customers: 28659
Experience:  have worked on and around most engine models for 35 yrs./Polaris ATV expert
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Toro 60 inch mower with kohler 27 hp engine. Runs fine when

Customer Question

Toro 60 inch mower with kohler 27 hp engine. Runs fine when you start, but when you engage mower deck, engjne looses power. Took in for service and they said rocker arms loose... second time in two weeks. What would cause this?
JA: Do you have fuel in the tank? If so, is the shut-off valve open and the fuel clean?
Customer: Added in new fuel.
JA: Do you plan on doing the work yourself?
Customer: Depending on how extensive.
JA: Anything else we should know to help you best?
Customer: Service people are saying cam, crank shaft probably need replacing.
Submitted: 4 months ago.
Category: Small Engine
Expert:  Curtis B. replied 4 months ago.

Welcome to JUST ANSWER small engines, let me try to help you !! I don't know it all, but maybe together we can get you a satisfactory answer!

Expert:  Curtis B. replied 4 months ago.

Twin cylinder engine. Run a cylinder test, loosen the spark plug wires, and with engine idling, remove one wire at a time, if engine dies when one wire is removed, the opposite cylinder is not firing. It may have no spark, from a bad coil. Or it can have the rocker arm problem again. Kohler has had engines with rocker arm problems and they replaced the cylinder head to newer style setup on he rockers. But that may not be problem now. More common is a bad coil. And Kohler wants you to replace both coils at same time.