Keoke
Gold Member
John's right about the interlock safety switches possibly interposing high resistance in the solenoid trigger circuit. Also, the start contacts in the ignition may also have high resistance. Starting at the ign. sw put a volmeter across the bat and start terminals, turn to start and measure voltage drop across these two terminals. It should no more then .3 of a volt under full circuit draw. If ok on ign sw go to next switch in this series circuit. The next sw may be either the clicking relay, neutral safety or the PTO safety sw.
All of these sw's are typicaly in series between the ignition sw and the starter solenoid. Just check then out one at the time. None of them should have more then .3 of a volt drop across their in and out terminals. Overall, you should not have more then .7 of a volt drop from the bat pos. post to the trigger terminal of the solenoid. A drop of .3 volt across a switch is not a good number, it is the max number allowed before canning the sw.
If you have no meter, simply put a 10/12 gauge jumper wire across the above relay and safety sw's and try starter each time. Just make sure tranny is in neutral and PTO out.
Note, the clicking relay may have a series instead of shunt coil in it. This means that the safety switches will be used to provide a ground path for this coil while the ign sw provides the hot. However, the fact that the relay clicks means that the needed ground path is being provided. Thus, the safety switches are ok. Look at safety switches, if they have only ONE wire going to them then they are ground providers for the relay coil. If they have two wires (in & out) then they are in series between the ign sw and the solenoid.
Sorry, but this post turned out to be more long winded then I wanted. I just hope it helps.
later,
george
All of these sw's are typicaly in series between the ignition sw and the starter solenoid. Just check then out one at the time. None of them should have more then .3 of a volt drop across their in and out terminals. Overall, you should not have more then .7 of a volt drop from the bat pos. post to the trigger terminal of the solenoid. A drop of .3 volt across a switch is not a good number, it is the max number allowed before canning the sw.
If you have no meter, simply put a 10/12 gauge jumper wire across the above relay and safety sw's and try starter each time. Just make sure tranny is in neutral and PTO out.
Note, the clicking relay may have a series instead of shunt coil in it. This means that the safety switches will be used to provide a ground path for this coil while the ign sw provides the hot. However, the fact that the relay clicks means that the needed ground path is being provided. Thus, the safety switches are ok. Look at safety switches, if they have only ONE wire going to them then they are ground providers for the relay coil. If they have two wires (in & out) then they are in series between the ign sw and the solenoid.
Sorry, but this post turned out to be more long winded then I wanted. I just hope it helps.
later,
george
