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AK Cold Start Specialist
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48 Posts
Discussion Starter · #1 ·
My mule was revving extremely high without throttle. The throttles okay. THE GOVERNOR WAS STUCK. The mule was fine after a while, and I went to pick up my brother. I was stopping, and it did it again, so I had to pull the key and slam the brakes. I'm calling the dealer about this, since I almost ran over my BROTHER!! due to a stuck governor. Now it's fine. Anything I can do about this?
I put wd-40 in and it's fine now.
It was after it had gotten above freezing, then frozen again.
 

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WD-40 is garbage, avoid it at all costs. WD-40 forms a sticky residue and will cause components to stick together. It is great for coating something to avoid rust and squeaks as long as that something has no bearing surfaces that can stick together.

Take a look at the governor parts diagram, it is called control, on Kawasaki.com and then carefully check to make sure it is actually functioning. You usually have to drill the rivets out of the cover to get to the linkage to observe everything.

If the governor is not working smoothly, apply a high quality oil such as Rem Oil, used for guns, and let it work down the governor arm shaft where it comes out of the block.

If that does not do the deed, you will likely have to disassembly the engine and replace the plastic drive gear for the governor assembly.

But, just for grins make sure you have the proper engine oil and it is clean. Old dirty oil is the leading cause of the plastic gear failures inside these engines.
 

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AK Cold Start Specialist
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48 Posts
Discussion Starter · #5 ·
Actually, I remember that when I pushed on the governor arm, it was closed. What else might caused this? Ice in the carb? It doesn't seem right. And weirdest of all: If I let it sit for a while, it's fine until it does it again some other time. Is this bad? Its only got about 150 hours on it.
 

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AK Cold Start Specialist
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48 Posts
Discussion Starter · #6 ·
Problem found. The choke when fully out opens the throttle slightly. The problem is that it would get stuck slightly open, since the spring on the carb is not very forceful. Also, the throttle linkage has a tolerance allowing connection to the throttle cam, so the choke can do it's slight throttle opening. The spring would get stuck whenever it was cold. The solution I found is to slam the throttle down and quickly let go whenever cold starting, to make sure theres no ice.
 

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I missed your follow-up on the problem, too busy hunting and playing!

Really cold weather creates a unique set of problems. I have found the dry spray used to keep welding splatter from sticking to work is the best to keep the external carburetor linkages lubed in cold weather. I used to use the Comet Clutch spray lube, it leaves a metallic residue behind that can get too messy for some folks, but nothing ever sticks to it either.
 
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