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Craftsman electric pto clutch

Hello just replaced the electric pto clutch with a used one. works good for awhile then blows the fuse. never did this before, with the old clutch.
could the part be bad, all wiring seems ok please let me know what you think

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Yes, you are correct. The coil in the clutch winding has an intermittent short. Once the coil warms up after being applied for a period of time, the windings touch one another and a short is produced.
The clutch will have to be replaced.
Good luck.
Regards,

Posted on May 12, 2009

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Posted on Jan 02, 2017

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Blows a fuse every time I engage the cutting deck


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There are several things that can cause the fuse to blow. PTO stands for Power Take Off and most likely this will not be the problem unless it blows the fuse when it is turned on. What you are saying is the fuse is blowing by just turning on the switch will be a short which can be anything from a pinched wire, shorted diode, short in the stator. bad voltage regulator.etc

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I have a Craftsman GT 5000 Garden Tractor, 25 HP, 48" mower. I recently changed the mower belt and it was working fine for about 2 weeks. The last time I mowed, the mower blades suddenly stopped and I...


Depending on your engine.. Briggs and Stratton or Kohler there are 2 different seat switches that are used to power the PTO clutch. The seat switch can cause the PTO clutch to disengage anytime there is not at least 70 lbs in the seat.

The PTO drive wiring has a 30 amp fuse in it. If by chance a stick went through the belt and tore off the wires at the PTO clutch (Common failure) even after you repair the broken wire you still need to replace the fuse.

Check the PTO clearance gap. It should be 0.012 dis-engaged. Any other value and the clutch will not work correctly. Adjust the clutch if necessary.

There is a 2 pin Pigtail just off of the PTO Clutch that you need to check for voltage at the connector. Probe the back of the wires if you can and your looking for 12V DC under the following conditions.

BRAKE ON or tied down
KEY ON
SEAT (Briggs and Stratton engine only) Someone needs to be sitting on the seat.

Then Pull the PTO Switch out. You should hear the PTO Clutch CLICK. If you hear the click there is no need to check voltage. The PTO switch is a multi function switch and it is quite possible the PTO switch failed. I doubt that the PTO Clutch has failed as they normally give you some kind of noisy indication that they are failing and don't fail straight away.

So.. In short
Check PTO Switch (Red wires) to usually red or brown thru the switch
Check 30 amp fuse
Check PTO clutch wires near PTO clutch (They get torn from something traveling through the pulley)
Check PTO clutch clearance at 0.012
Check Brake switch for an audible click as you depress it some distance No click.. possible bad switch
Listen for Seat switch Click as you slowly add weight to the seat. No Click or any click and it can still be suspect due to the Briggs and Stratton installed engine ones have more than one function.. Ignition and PTO clutch power.

The actual wiring diagram is on page 35 of the owners manal that can be found here:
http://www.managemylife.com/mmh/owner_manuals/27245/CRAFTSMAN-Lawn,-Tractor-L9910386?brand_name_search=917273023

Lastly... check each of the mower deck blade bearings. A seized bearing can cause PTO problems.

Hopefully you have enough information to solve the mystery. If not just respond here and I will help you.

Thanks for choosing FixYa.

Kelly



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