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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

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

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.

Hey there - WELCOME to LMF!

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

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

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.

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

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:

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

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:

SO THE ENGINE WASNT FROZEN?...GOOD NEWS!:thumbsup:

Yes! But I can't locate a clutch for this particular model/serial number combination.

dennis1 said:

Yes! But I can't locate a clutch for this particular model/serial number combination.

Click to expand...

Look at the clutch itself. Clean it off and inspect for numbers look closely. Chances are it's a John Deere part because Deere makes the scotts tractors.

Sent from Lawn Mower Forum for iPhone.

Yes, but the JD website doesn't have a clutch for my serial number range. The 2 or three other ranges have a part.

give us the exact numbers....and ill talk to my guys and see what i can do for you:smile:

Only number on the clutch is on the triangular plate on the engine side. - 0676

Details
Scotts S2554
Kohler engine
Model: CV725S
Spec: 69539
SN: M02554S029831

If the SN was 30000 or greater John Deere has the clutch.

Thanks :thumbsup:
Dennis

heres one..John Deere Blade PTO Clutch 240 245 GT242 G100 Many | eBay ill keep looking:thumbsup:

Yeah, I saw that one but was afraid it was one of the weaker ones made for smaller decks. I saw some posts where people only got 50 hours on some clutches.

That is the part number listed for the other serial numbers. JD doesn't list a part number for my range.

See this link

John Deere - Parts Catalog

Duh! Maybe I'm reading the JD site wrong. Maybe it is saying to use this clutch but you need the additional parts listed...

this is the number cross match i keep coming up with...ill get some more info for you tmrrw:thumbsup:

whats the deck size?

just in case...http://www.deere.com/en_US/homeowners/media/pdfs/products_non_current/scotts/020001.pdf

Deck size is 54"

54 or 54c?

I don't know the difference. It is 3 blade side discharge.