Engine Cub Cadet HDS 2135 won`t start

[jal540]

No voltage there. Could it be a safety switch and/or an ignition switch?

 

[cpurvis]

Yes.

 

[jal540]

Is there a way to diagnose which switch is bad?

 

[cpurvis]

Yes. One at a time. Sorry, but I don't know any other way.

 

[bertsmobile1]

The power to that blue wire goes like this.
Battery to fuse
Fuse to B ( battery ) terminal on starter switch
B to S ( starter ) terminal on ignition switch
S to PTO switch
Pto switch to brake switch
Brake switch to starter.

It is a daisy chain so all of the switches must be closed for it to work.
On Cubs it is a PIA cause the switches are hard to get to

 

[jal540]

I have a good service manual for it. I followed it`s instructions to verify that the following are functioning correctly: solenoid/starter, fuses, relay, interlock switch (for brake pedal), and PTO switch. The seat switch has continuity in one position and not in the other, so I think it`s OK.

I`m not sure how to check the ignition switch. Do you know?

This one has six terminals: G, S, B, L, M, and R (alternator).

If it`s none of those, I guess it must be wiring

 

[jal540]

I checked continuity on the ignition switch and thought it was bad (didn`t have any instructions for checking a six-prong switch). So, I replaced it. Unfortunately, that did not fix it.

I guess it`s a wiring issue. There`s no obvious problems visible with the wires. Not sure I want to wrestle with the mower any further.
:thumbdown:

 

[cpurvis]

Isn't there a reverse movement safety switch? I didn't see it mentioned as testing good.

If nothing else, you can run a bypass wire directly from the ignition switch to the starter terminal that the blue wire is on. Of course, you would have none of the safety switches but who would care?

 

[bertsmobile1]

I have a good service manual for it. I followed it`s instructions to verify that the following are functioning correctly: solenoid/starter, fuses, relay, interlock switch (for brake pedal), and PTO switch. The seat switch has continuity in one position and not in the other, so I think it`s OK.

I`m not sure how to check the ignition switch. Do you know?

This one has six terminals: G, S, B, L, M, and R (alternator).

If it`s none of those, I guess it must be wiring

Ground
Start
Battery
Lights
Magneto
Alternator ( Rectifier )

 

[bertsmobile1]

This is getting silly.
If there is 12V on the blue wire going onto the starter then the starter should be energised & turn.
The safety switches interrupt that 12V supply.
The only other thing is a bad ground.