On Apr 2, 12:50�pm, (hillclimber)
wrote:
Have a 18 hp Kholer engine (model # CV492)on a 42" Craftsman lawn tractor
(7 years old). Problem is starts OK and runs for 20 minutes or so and then
starts to stall and lose power. �Does restart but repeats problem.. �This
was the first mow of the season. �Had run all gas out for winter. Used
fresh gas to start. �Know I need a new battery as I can put a charger on
the current (orginal) battery and get mower started but should have
anything to do with the stalling? �Changed oil and oil filter and air
filter. �Have not changed gas filter or spark plug. �Please advise, Thanks.


I doubt it has anything to do with fuel delivery. I would look at the
safety switches first. They get dirty, ground out, and they also wear
out.

To check them: There should be one wire coming from the motors coil,
then it splits into different areas that go to the different switches.
If you disconnect the main wire, that will disable all the safety
switches. Then run it to see if the problem still exists. If it does,
then it is NOT the safety switches.

Diagnosing the problem will take a systematic approach. Rule-out each
system until you find the system (fuel, electrical, compression and
etc.) that is faulty.

Hank