Won't start

[Mad Mackie]

The majority of Scag machines have a cranking relay. when all the safety circuit parameters are correct, the electronic control module will allow a ground path for the cranking relay to close when power from the key switch in the start position goes to the cranking relay.
When a Scag with a cranking relay has a starting problem and the engine is cranked over for prolonged periods of time, the contacts in the relay get burned.
I keep a spare in my trailer along with the tools to remove the panel as the relay is under the panel close to the key switch.

 

[Bobby Boyd]

Replaced relay and thought had problem solved. Mowed twice with mower. After mowing yesterday parked in front of garden shed and blew the mower off. After about an hour decided I would park it in the shed and guess what? Turned the key nothing. No crank just like before. So I left it set out overnight as couldn't move 1350 pound mower by myself. Got on it early this afternoon and she cranked right up. Go figure. I don't know if this is another relay issue or something cooled down overnight and let it startup today. I am beginning to wonder about scag quality control and their mowers in general. I had a john deere for 20 years and never had a problem. I may be looking to sell this thing and get and look for what I hope would be a better machine.