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I have a 26HP kohler command. The battery has 12+ volts. Starter doesn't seem to have power to turn engine over. I first thought it was dragging. Bushings seem ok. Rubber grommet that fits on drive pinion a little chewed up, not much. There was a little a little rubber between drive nut (collar) and drive pinion. Is drive nut metal to metal against drive pinion? PDF doesn't show anything between them. This doesn't look rite to me. Looks like the drive nut would grind against drive pinion. Starter spins fine off of engine. What do some of you think? Thanks

http://www.kohlerengines.com/onlinecatalog/pdf/24_690_02_EN.pdf see pages 93-96

Thanks mechanic mark, I have the PDF for my Kohler engine bookmarked on my computer. I've had it for 3 or 4 yrs. I refer to it often. The info you sent has a similar starter but different from mine. My solenoid is not on the starter but they are both pretty much the same. What has me confused is the starter spins and engages drive pinion onto fly wheel. Armature shaft spins in drive pinion but doesn't turn drive pinion. I cannot see anything broken or striped. Is the drive nut (collar) supposed to be attached to the drive pinion? Thanks for any replies.

Remove the plugs and see if the starter turns over the engine. If it does you may have to check the valve clearances.

Your collar is cactus.
With no load it turns and engages the drive gear into the flywheel but then when it gets a load the starter shaft is spinning inside the the bendix collar.
Some are pinned, some are keyed and some have a flat on the shaft to drive the bendix.

Kohler uses a friction drive on their non shift solenoid starters. The worm gear pushes a collar up to the pinion which has a rubber lining. If that lining gets chewed up or oil contaminated it will slip and cause problems like you are talking about.

The idea behind it is it gives the starter some cushion in the event of a backfire on start up.

Thanks to all who answered. Rivets: Your answer makes since. bertsmobile: Its not keyed, no pin in it, but if a flat is some type of fiber washer that acts as a clutch that makes since. Ilongine: Your answer sounds like the problem. Thanks again to all.

ILENGINE said:

Kohler uses a friction drive on their non shift solenoid starters. The worm gear pushes a collar up to the pinion which has a rubber lining. If that lining gets chewed up or oil contaminated it will slip and cause problems like you are talking about.

The idea behind it is it gives the starter some cushion in the event of a backfire on start up.

Click to expand...

Must work cause I only ever seem to pull down Briggs starters :confused2: