Jim Richardson
New member
- Joined
- Jun 25, 2013
- Messages
- 10
- Location
- East Amwell, NJ
- Tractor
- Kubota B2100 HSD, Kubota B2910 HST, Husqvarna 48" lawn tractor
Now it is my turn. Long time lurker in these forums and now I have the problem.
I have a B2100 and a B2910. The B2910 is HST and acts like there is a safety switch problem. I push in the clutch, move the two PTOs to neutral, turn the key, I get all three lights, but no starter engagement.
Here's what I was doing before the failure. I was mowing, using the orange knob handle to the right of the seat for forward speed. I normally just push the rocker pedal. I remarked to myself that the handle gets more speed than the rocker pedal does, and even pushed the rocker pedal down harder than normal. So... I naturally suspected the rocker pedal safety switch.
But I tried the easy things first. I cleaned up the battery terminals, and even tried jumper cables. I would suspect bad battery or connections if when the key is turned to start, the dash lights dim. But here, the dash lights remain steady, which I interpret to mean no starter current draw. I put an ohm meter on the 5A fuse and it is fine. I tried the spare 5A and it is fine too. I swapped them for fun. No change.
I visually inspected the three safety switches.
I started with the rocker pedal switch, as the last thing I was doing was pushing the rocker beyond where I normally put it. The rocker pedal depresses the plunger when it has no pressure. I put an ohm meter on the wiring harness connector and got continuity as the pedal sits, and I lose continuity when pressing forward or backwards.
Next I did the same to the PTO safety switch. With both PTO levers in neutral the switch plunger is depressed, and I have continuity at the ohm meter. Moving either PTO lever breaks the continuity.
The clutch safety switch had the gas tank leaning on it, and the wires were missing some insulation. I fixed the wires, but that did not solve the no crank problem. I put an ohm meter on the wiring harness connector I have no continuity as the clutch sits, and I get continuity when I depress the clutch. To me that means that all three switches work and are in adjustment.
I next pulled the wiring harnesses from the three safety switches, and one by one jumped them, tried to start, until all three were jumped. Still no starter engagement. I am stumped. What am I missing? Thanks in advance for your guidance.
PS: I did earlier in the year have a mouse nest behind the gauges, with chewed insulation, which blew the 10A fuse. That has all been cleared up. Yes, that is a 12mm socket holding the fuel tank up to give me working space.
I have a B2100 and a B2910. The B2910 is HST and acts like there is a safety switch problem. I push in the clutch, move the two PTOs to neutral, turn the key, I get all three lights, but no starter engagement.
Here's what I was doing before the failure. I was mowing, using the orange knob handle to the right of the seat for forward speed. I normally just push the rocker pedal. I remarked to myself that the handle gets more speed than the rocker pedal does, and even pushed the rocker pedal down harder than normal. So... I naturally suspected the rocker pedal safety switch.
But I tried the easy things first. I cleaned up the battery terminals, and even tried jumper cables. I would suspect bad battery or connections if when the key is turned to start, the dash lights dim. But here, the dash lights remain steady, which I interpret to mean no starter current draw. I put an ohm meter on the 5A fuse and it is fine. I tried the spare 5A and it is fine too. I swapped them for fun. No change.
I visually inspected the three safety switches.
I started with the rocker pedal switch, as the last thing I was doing was pushing the rocker beyond where I normally put it. The rocker pedal depresses the plunger when it has no pressure. I put an ohm meter on the wiring harness connector and got continuity as the pedal sits, and I lose continuity when pressing forward or backwards.
Next I did the same to the PTO safety switch. With both PTO levers in neutral the switch plunger is depressed, and I have continuity at the ohm meter. Moving either PTO lever breaks the continuity.
The clutch safety switch had the gas tank leaning on it, and the wires were missing some insulation. I fixed the wires, but that did not solve the no crank problem. I put an ohm meter on the wiring harness connector I have no continuity as the clutch sits, and I get continuity when I depress the clutch. To me that means that all three switches work and are in adjustment.
I next pulled the wiring harnesses from the three safety switches, and one by one jumped them, tried to start, until all three were jumped. Still no starter engagement. I am stumped. What am I missing? Thanks in advance for your guidance.
PS: I did earlier in the year have a mouse nest behind the gauges, with chewed insulation, which blew the 10A fuse. That has all been cleared up. Yes, that is a 12mm socket holding the fuel tank up to give me working space.