550Doug
Member
- Location
- Southern Ontario
I recently picked up a Case 446 garden tractor without a mower, and it has the Onan B43M engine. The previous owner has passed away so I'm asking my questions here.
It runs great and I like the high clearance from the large rear tires. It does freewheel going down slopes but at the bottom of the slope the engine dies and won't start. I found that it blows a 20 amp fuse from the ammeter to the battery side of the solenoid. So I replace the fuse and it fires right back up. I also notice that the ammeter will read around 15 amps when the engine is at half or 2/3 throttle. So it looks to be overcharging at 20 amps when freewheeling. I suspect that the voltage regulator is non standard as it does not appear in a parts manual.
So what is going on with blowing a fuse when freewheeling?
I will also post this in the Tractor Talk forum.
This post was edited by 550Doug on 09/30/2022 at 04:27 pm.
It runs great and I like the high clearance from the large rear tires. It does freewheel going down slopes but at the bottom of the slope the engine dies and won't start. I found that it blows a 20 amp fuse from the ammeter to the battery side of the solenoid. So I replace the fuse and it fires right back up. I also notice that the ammeter will read around 15 amps when the engine is at half or 2/3 throttle. So it looks to be overcharging at 20 amps when freewheeling. I suspect that the voltage regulator is non standard as it does not appear in a parts manual.
So what is going on with blowing a fuse when freewheeling?
I will also post this in the Tractor Talk forum.
This post was edited by 550Doug on 09/30/2022 at 04:27 pm.
