I have a John Deere 325 garden tractor model year 1995. Serial # < 70000. 48” mower deck. Kawaski 17 HP engine. All have been working fine for 20+ years but have a little problem that I can’t figure out. The last month or so the yellow light on the dash has been flashing intermittently but I haven’t had time to figure out the issue. So here is the sequence of events:
• Just finishing up about an hour of mowing when I noticed a faint smell something akin to a belt sticking & burning. Then the mower deck quit.
• Quickly disengaged the PTO and headed for the driveway.
• Looked underneath and the drive pulley looked a little crooked. Wiggled it and it fell off the shaft !
• The bolt looked fine so I took the 3 nuts off the clutch assembly. The plates looked pretty worn so I ordered a new clutch assembly.
• New one arrives and when reading the instructions, it becomes obvious to me you need pretty specific voltage to the clutch for it to work properly.
• Install new clutch and torque to 55 ft-lbs.
• Measure the battery: 12.6v. Start it up and at full speed still 12.6v.
• Measure the output of the genset: 14.6v. So I figure the voltage regulator needs replacement.
• Install new regulator, start it up but the yellow light is still flashing. Hmmm, that’s odd.
• With the mower deck off, engage PTO and the drive pulley spins. Good news I figure.
• Install mower deck. Let’s cut grass. Engage PTO and deck rotates for 5 seconds and engine kills – that’s weird. Try to start and engine just cranks doesn’t want to start.
• Tried many times and almost seems like no spark or no fuel.
• Reinstall old voltage regulator – same problem.
• Remove line from discharge of fuel pump, crank engine, fuel spits out.
• Remove spark plug and it is dry, looks ok. Ground it, crank engine. Could not see spark.
o So it appears no current to spark plug. What do you suggest? What needs to be replaced now? And where is it?