1993 JD 445 won't start - no spark

[rocksoldier]

Hi there,
I have a 1993 JD 445 (sn M00445A011748). Fuel injected. I'm not getting a spark so it's not starting. I've had the machine for over 15 years and did most of the maintenance myself. The machine started fine a few days ago to cut grass for 5 minutes. It has always been shedded.

Here is some info:
-I bypassed the seat switch so that is likely not it, but I did this in my troubleshooting so am not 100% sure.
-Lights on dash are normal and strong. Headlights work too.
-red and green lights on PCB go on when I press the brake (need to push the brake to start it).
-both spark plugs are not sparking. I put in new plugs and same thing.
-I put in a new air cleaner.
-I have always used premium gas, but it is a 1993 and I have never used fuel stabilizer.
-When I try to start it with plugs in or out, it makes a steady sound, not a hum but not super loud either, like it's trying to start but can't since there is no spark.
-PTO switch is fine because it kills the ignition process sooner.
-In my multiple attempts to start it during my troubleshooting, it did backfire twice.
-I think the fuses are good because I get nothing when I turn the key with one fuse out.

 

[beenthere]

:welcome: to TBN

Have you read the "Similar Threads" identified at the bottom of this thread? Looks like 4-5 of them that could be related.

Keep us posted on what you find out. Hopefully something simple, just need to locate it.

How many hours are on the 445?

 

[RandyT]

Ran into that issue with a customers mower a few years. Found that one of the fuses wasn't making contact.

 

[radios1]

here's the same problem. read past the incorrect info for the correct info, but hope you don't have a bad control module, which goes for $928!!!.
no spark on 445 JD

 

[rocksoldier]

Thanks for your help. It turns out it was the camshaft.

 

[beenthere]

Thanks for your help. It turns out it was the camshaft.

Tell us about "it was the camshaft". Must be a story behind the OP question and your finding "it was the camshaft".
Think we'd like to hear more, and your info will add to the archives of TBN on JD 445's.

 

[Richard001]

Tell us about "it was the camshaft". Must be a story behind the OP question and your finding "it was the camshaft".
Think we'd like to hear more, and your info will add to the archives of TBN on JD 445's.

Yes same here. I will be interested in knowing how a bad cam will cause no spark.

Richard

 

[radios1]

Thanks for your help. It turns out it was the camshaft.

I do believe you meant the crankshaft reluctor ring, or the magnetic sensor.. instead of on the crankshaft, these might be placed under the flywheel..