Quote:
Originally Posted by jimbob200521
I finally get to disagree with you on something!! 
According to the Kohler manual, shut down is best done at 1/2 to 3/4 throttle. I've experienced the "hard to shut down" problem where it almost seems to backfire but if you shut down at at least 1/2 throttle, it shuts down like a dream. This is what I've been doing and so far, so good  |
Disagreeing with me is fine...... just remember, I've worked on a few more engines than you have.
You may have good luck this way, and the manual may state that, but I'm not shutting my motors down this way. If set right, they will shut off at idle.
**EDIT**
That said:
The main reasons for a motor "dieseling" when shut down are;
*Fuel solenoid not killing the fuel
*Motor is still too hot, needs to idle longer and cool down
#1 reason.... low idle is too fast. Set the low speed lower.