Cub not starting intermittently

Tue Apr 23, 2013 9:56 pm

My father complains sometimes his cub does nothing when he pulls the starter. The starter doesn't make any noise at all. A bit later it'll work fine. I can't reproduce it and I've never seen it do that. He seems to think I can fix it but I have no idea what is going on. Any ideas?

Re: Cub not starting intermittently

Tue Apr 23, 2013 10:18 pm

Yep, clean ALL the contacts and grounds from the battery to the starter. Remove starter. Remove starter switch. Clean contacts inside switch, Or, replace with a new one.

Weather, humidity, temperature and even Gremlins will cause those symptoms. Dielectric grease on all those connections would be a plus.

Re: Cub not starting intermittently

Wed Apr 24, 2013 12:10 pm

Dale Shaw wrote:Yep, clean ALL the contacts and grounds from the battery to the starter


This includes pulling the cables off the battery posts and giving them a good scrub with a battery brush. I recently had this problem, and it turned out to be corrosion between the positive post and the cable. The tractor started fine, but stalled, and when I pulled on the starter rod, nothing. Because the failure happened so suddenly, I suspected the starter. I did check most of the connections, but the positive cable was solidly on the battery post, so I just used an Ohmmeter to check it. Even on the 20 ohm setting, it showed zero, so I figured that one was good.

Replaced the starter and the same thing happened. She started, but stalled shortly thereafter, and again nothing out of the starter. I was able to start her by running jumpers from a 12v battery to the post on the starter switch and the base of the regulater, but as soon as I disconnected the positive clamp from the tractor, she died. Loosened the positive cable clamp from the battery, and sure enough, there was a good bit of corrosion. Could have saved myself the cost of the starter.

Re: Cub not starting intermittently

Wed Apr 24, 2013 9:41 pm

All electrical connections need to be cleaned and greased to slow down future corrosion. You can't stop it completely for it will eventually come back if you live long enough.