2005 GR2100 3 cyl diesel lawn tractor will not shut off with the key. It Will shut off manually under the hood. I replaced in order, the vacuum switch/valve under the hood, the timer. and the key mechanism. one at a time, none of them fixed the issue. What's next?
Thanks in advance.
Rob M.
First, check the shutoff solenoid. Connect a VOM or test light, positive to the wire on the solenoid, negative to a good ground.
Start the tractor - there should be no voltage.
Now, turn the key switch off - there should be 12 volts present for about 10 seconds, then go to zero.
If the voltage goes to 12 then 0, the solenoid is probably bad.
If the voltage never goes to 12,
1. check the 15A Engine Stop fuse
2. check the connections on the stop timer
a. black wire should go to a good ground
b. gray wire should have 12 volts always
c. yellow/white wire should have 12 volts when the keyswitch is on, 0 volts otherwise
d. black/yellow wire should be 0, then 12 for 10 seconds when you turn the key off, then 0
Let us know what you find.
