Hi all!
I have L4330 HST. trying to diagnose an issue.
engine will crank. sometimes will not start. sometimes will start and then die shortly.
I do not think it is HST switch or clutch switch because it will crank. I do not think it is pto switches for same reason.
Sitting squarely and still on seat, If it starts it runs smoothly and will just die shortly like a kill switch was pushed. I think its possible the seat switch is out of adjustment or going bad. the seat switch is 3 wire, with a multimeter, it appears to activate each of 2 posts in slighly different positions. with the switch completely up: its one configuration, midway down the middle pin changes resitance, farther down the 3rd pin changes resistance. I cant figure out what purpose this serves. So Im not sure which posts I could jump across to bypass the seat switch for testing purposes.
I was told the seat switch kills the engine by cutting power to the fuel solenoid. on this tractor i don't know what else is in the circuit to test. is there a way to test if the fuel solenoid is getting power, or if it is bad?
last winter in very cold weather it would not even crank, occaisionally if I fiddled with the HST foot pedal I could get it to crank. When the weather warmed up, it ceased to be an issue. I thought it might have been an ice issue. Today I finally located the switch and adjusted it in a bit so the plunger would engage a little more when the pedal was in neutral. I forgot to take the key today to the location where the tractor is, so I couldn't experiment. I theorized the seat switch may be bad or slightly out of adjustment and the HST switch also. I could tape the seat switch fully down temporarily and see if it stays running.
I don't know if Im on the right track or its something completely different. any help is appreciated!
I have L4330 HST. trying to diagnose an issue.
engine will crank. sometimes will not start. sometimes will start and then die shortly.
I do not think it is HST switch or clutch switch because it will crank. I do not think it is pto switches for same reason.
Sitting squarely and still on seat, If it starts it runs smoothly and will just die shortly like a kill switch was pushed. I think its possible the seat switch is out of adjustment or going bad. the seat switch is 3 wire, with a multimeter, it appears to activate each of 2 posts in slighly different positions. with the switch completely up: its one configuration, midway down the middle pin changes resitance, farther down the 3rd pin changes resistance. I cant figure out what purpose this serves. So Im not sure which posts I could jump across to bypass the seat switch for testing purposes.
I was told the seat switch kills the engine by cutting power to the fuel solenoid. on this tractor i don't know what else is in the circuit to test. is there a way to test if the fuel solenoid is getting power, or if it is bad?
last winter in very cold weather it would not even crank, occaisionally if I fiddled with the HST foot pedal I could get it to crank. When the weather warmed up, it ceased to be an issue. I thought it might have been an ice issue. Today I finally located the switch and adjusted it in a bit so the plunger would engage a little more when the pedal was in neutral. I forgot to take the key today to the location where the tractor is, so I couldn't experiment. I theorized the seat switch may be bad or slightly out of adjustment and the HST switch also. I could tape the seat switch fully down temporarily and see if it stays running.
I don't know if Im on the right track or its something completely different. any help is appreciated!