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JLG/ Ford LRG425 engine wiring diagram

excavator

Senior Member
Joined
Oct 16, 2006
Messages
1,448
Location
Pacific North West
I went out and looked at a JLG 40H with an LRG425 Ford in it that has no spark. It was running fine when the starter was changed and now will not run. I have several of the LRG425 DIS manuals but this one has had the 1U1L-12A297-DA ignition control module update kit installed , (new ICM, MAP sensor and harness) I'm looking for a wiring diagram/troubleshooting guide to match the kit, not sure there was one printed but thought I'd ask. And yes, I did check to make sure all the wires were properly connected at the starter.
 

Txhayseed

Senior Member
Joined
Dec 23, 2019
Messages
610
Location
Texas
So it ran, starter failure, replaced starter and now no spark ? That's odd. Didn't pinch a wire between the starter and mount during the install or forget to reconnect the battery ground cable to the block or starter mounting bolt ? As far as a manual goes you might have to reach out to a ford industrial dealer like powertech engines.
 
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