mower won't crank

[kak]

Hello, my scag cheeta won't turn over it acts like a safety switch isn't working. At first it would crank after moving the levers around then wasn't sure which switch affected it. Now won't turn over

 

[bertsmobile1]

Firstly see if you can turn it over by hand.
Always a possability of a seized engine which may be recoverable if you don't cause any more damage.

If it does then get a copy of the wiring diagram which is in the back of the owners manual which can be downloaded from Scag if you don't have one.

There are 2 individual safety circuits.
one wont let you crank the engine
The other won't let the engine fire.

On most ZTR's won't crank is motion control levers, parking brake & pto switch.

Power goes from the starter solenoid feed terminal via a fused wirs t the B terminal on the ignition switch then to the S terminal on the same switch then to the PTO switch and then to a relay from the relay to the starter solenoid + trigger terminal.
The motion control levers connect to the - of the starter relay which trips the relay and allows the + to go to the starter solenoid.

 

[mechanic mark]

Check oil level first, then check fuses, then with " hands on" check all wiring, relays, & switches making sure everything is tight & secure.