Scotts 2550 won't crank

[dennis1]

I have a Scotts 2550 25HP Kohler engine. My wife was using it and the engine stopped. That's about the best description I can get. After some investigation I suspect an engine problem.

I'm wondering if I should be able to turn the engine by hand using the nut/bolt on the top that id in the center of the fan? If so, how much effort should it take?

I've eliminated the starter and battery and removed spark plugs.

Thanks,
Dennis

 

[reynoldston]

Sure does't sound good, did you run it out of oil?

 

[dennis1]

No. Oil is fine but I did consider the oil pump might have failed. I had that happen in a 63 chevy once. No metal in the oil I removed.

 

[Briana]

Hey there - WELCOME to LMF!

I moved your thread to the Small Engine & Mower Repair Forum. :smile:

 

[Edwards saw service]

Try using a wrench or socket to turn the engine over. The valves could be sticking or the gap on the lifter is too wide. This creates too much compression and the starter isn't strong enough to turn the flywheel. If the motor turns over check the valve lifter clearance it should be about .025 to .030

 

[dennis1]

No, it isn't compression. I took out the plugs and still can't get it to turn over. I've removed the flywheel and stator. The shaft is completely dry around the seal. I'd expect some oil. I'm suspecting an oil pump failure.

 

[reddragon]

make sure the drive belt is plenty loose...if the engine is frozen your kinda screwed:frown:.....drain the oil and inspect it with white paper towel

 

[dennis1]

Yeah, all belts are off. Clutch is off. I didn't see any metal in the oil I drained but it could have settled in the pan. I'll clear my bench, pull the engine and move it inside in the next couple of days.

Any idea where I can get a rebuild kit? I've tried google but there is so much trash in google searches these days I can't find the good stuff.:thumbdown:

 

[reddragon]

did you try ..http://www.partstree.com/parts/ i would pick up a manual before you get into it...kohler repair manual | eBay or check your local mower parts place

 

[dennis1]

Yes, I have a complete repair manual for the mower and one for the engine.

Turns out it was the PTO clutch. Bearing melted and seized.

Nice website but they don't have Scotts or John Deere parts. The have parts for the Kohler engine.

Thanks :smile: