If it were my 300 dollars, I'd want to be sure that I was getting a full 12 volts to the clutch and a good ground. Many folks don't realize that that clutches and solenoids can't fire because of low voltage concerns caused by such things as weak batteries, loose/corroded/poor connections and grounds. Once you've confirmed the voltage and covered these bases you have likely diagnosed yourself a clutch.

By all means, check how much juice you're getting to the clutch. When the battery on my old Power King gets weak, the PTO won't engage. A good charge or a battery replacement cures the problem.

Make sure it doesn't just need adjustment. The linings wear after time and begin to slip.

Cedgo
Would you care explaining how an electric clutch can be adjusted?

A couple of tests are specified for the PTO on my 2000 20hp Landlord DLX. For a 12vdc PTO, I expect they are somewhat generic. Remove PTO. Check the coil with a VOM. Should read 2.5 ~ 3 ohms. If the reading is very high, there may be an open in the coil (bad). Check resistance from one pin of the connector to the body of the clutch. Probe body in several places. Repeat with other pin. Any reading from pin to PTO body indicates coil shorted to ground (bad). If your clutch is bad, I would shop around before spending $300. Seems pricey to me (IMHO). A Simplicity replacement is $180.

As far as adjusting one, mine requires a 0.012 ~ 0.015" air gap. There are 3 adjusting nuts, and three gaps through which a thickness gauge can be inserted. Check the gap and determine how much adjustment is necessary. Insert correct thickness gauge and tighten adjuster nut until slight resistance to gauge is achieved. Repeat with all adjusters. Remeasure to be sure all are adjusted equally. Keep in mind that a 1/4 turn of an adjuster nut takes out a lot of play.

t

Most basic PTO clutches do not have componants that are serviced seperately. I've serviced some larger Deere tractors that do. Basic Deere PTO clutches are usually less than $150. Murray, Cud/ MTD can be $300. Go figure. . .

I'm assuming that the poster meant that the clutch would not fire as he did not specify slippage and was testing electrical concerns. Correct jdisp?

You just tighten it up a little. Just a LITTLE or the PTO will stay engaged. Not rocket science.

I ask Cedgo
"Would you care explaining how an electric clutch can be adjusted?"

His rply..
""You just tighten it up a little. Just a LITTLE or the PTO will stay engaged. Not rocket science."

Tighten what up?

Since they operate with steel plates, friction disc and magnetics.

I will ask again.

Would you care explaining how an electric clutch can be adjusted?

Some clutches have 3 or 4 nuts, usually that retain the spring loaded plate that you set up with a feeler gage for clearance when replacing the linings or coil, etc.

Try this website
http://www.paskellawnmowers.com/ElectricPTOClutches.html

For you dealer diehards

9911-Warner 5217-9 Electric PTO Clutch for Ariens, Cub Cadet, AYP, Gardenway, John Deere & Snapper
ELECTRIC PTO CLUTCH REPLACES ARIENS 03643100, CUB CADET 717-1459/917-1459, AYP 160889, GARDENWAY 1772388, JOHN DEERE AM119683, SNAPPER 53739. $234.00

Just for kicks search on john deere web site for parts: AM119683

aint it fun to get in a piss'n match

oh yeh, hippy, just for you

http://www.warnernet.com/pdf/819-0458_P-1097-6.pdf

Steve
Thank you for the links. That will help a great deal.
The one that I am working on looks much like the one below.
It is being put on a home built Bradley type tractor a guy is working on.

At the corners of the triangle the parts are held together with rivets. No screws at all.

He also has three other makes of clutches that all fit his engines shaft. All of those, are also put together using rivets. So my guess is, we have four different brands of electric clutches that can not be adjusted or rebuilt with cutting the rivets out of the units.

The adjustable clutch I described earlier is made by Ogura Clutch Co. Ltd, MA-GT-JD24 904 DC-12V.

t

Look, I'm only trying to help the original poster. He has power to the clutch, but clutch will not engage. Either the clutch is worn out or coil is bad. I don't know about every clutch made by every manufacturer, and maybe his clutch is not adjustable, but before spending a good chunk of change, what could it hurt to see if the clutch is adjustable? The same thing happened to my original JD around 1500 hours. A little adjustment and I was good to go($0.00). As an aside, even the clutch lining could be replaced, or possibly shimmed. Rivets are easily drilled out and replaced. Your local hardware store will have rivet guns and rivets. The difference between the smartest man in the world and the dumbest is infintestimal compared to what the smartest man doesnt know.

www.surpluscenter.com has that ogura clutch for 139.00 plus shipping, and has a few more different ones for about the same money. look under "power transmission" when you get to the site.