2010 L3400 HST starting issue (148 hours)

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L3400
Jun 7, 2015
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Helena, Mo
Tractor sat all winter (3+ months). Started right up and drove it around for 15 minutes. Would not start a week later. Would turn over but no smoke.

Had battery tested and charged. Took off fuel solenoid and it started right up. Did some electrical testing, 12.75v at battery, 12.5v at ignition switch (one contact was rusty and I cleaned it), 10.45v at fuel solenoid.

Bought a Chinese after market solenoid and installed it. No change, put back original fuel solenoid.

Cleaned the ignition switch, fuel Solenoid conections and primary battery ground. Then replaced the ignition switch with a new Kubota ignition switch. Still won't start. Voltage at the fuei solenoid did improve to 11.65v.

Very frustrated.
 

North Idaho Wolfman

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L3450DT-GST, Woods FEL, B7100 HSD, FEL, 60" SB, 743 Bobcat with V2203, and more
Jun 9, 2013
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Sandpoint, ID
The "signal" to the solenoid is not from the hot but from the ground side, problem is probably a bad stop relay.
I would check that out next. ;)