Sooner or later every Polaris 570 or 800 owner has to get the primary clutch off the crankshaft — to replace a worn belt sheave, clean out belt dust, swap weights, or chase a vibration. And sooner or later somebody grabs a pry bar. That is the moment a routine clutch job turns into an engine job.
Why the Primary Feels Welded On
The primary clutch on these machines does not slide onto a splined shaft the way a secondary does. It seats on a tapered crankshaft end and is drawn tight by the center bolt. That taper is a friction fit by design: the tighter the bolt, the harder the two mating surfaces lock together. It is what keeps the clutch from walking or fretting under thousands of engagement cycles.
The side effect is that once the center bolt comes out, nothing about the clutch feels loose. There is no gap to get a tool into, no lip to grab. The taper is still holding with hundreds of pounds of clamping force built up over years of heat cycles. Pulling straight and evenly on the center is the only thing that releases it.
What Prying Actually Damages
Riders who fight it usually try one of three things, and all three cost money:
- Prying behind the sheave. The cast aluminum stationary sheave is not structural in that direction. It chips, cracks at the fin roots, or gets bent enough to throw the clutch out of true.
- Hammering on the crank end. Shock loads travel straight through the crank into the main bearings. You will not see the damage the day you do it — you will find it later as a knock or a leaking seal.
- Heat. Torching a clutch to break a taper cooks the bushings, the spring temper, and anything plastic inside.
The Right Tool Is a Threaded Puller
A proper primary puller threads into the clutch body itself and pushes against the crankshaft end. That geometry does exactly what the taper needs: dead-straight, centered force, applied gradually with a wrench instead of an impact. Turn it in, put a wrench on it, and the clutch pops loose with a sharp crack. No prying, no shock, no collateral damage.
The Polaris 800/570 Primary Clutch Puller is machined from high-quality steel and heat treated, in a one-piece design, so the threads engage the clutch fully instead of loading on the first few turns. It fits all years of the Polaris RZR 570 and RZR 800, and Polaris Ranger 570 and Ranger 800 models through 2022. Each one comes individually packaged with instructions.
How the Job Should Go
With the belt off and the clutch cover out of the way, remove the primary center bolt. Clean the threads inside the clutch hub — years of belt dust pack in there and can make a good puller feel like a bad one. Thread the puller in by hand until it bottoms against the crank, then tighten it with a wrench. Expect a loud pop as the taper lets go. Support the clutch so it does not fall on the frame or the floor when it releases.
On reassembly, both the crank taper and the clutch bore need to be clean and dry. Oil or anti-seize on a taper changes how far the clutch draws up and can let it work loose or crack the hub. Torque the center bolt to the factory spec — guessing here is another common way to end up back in the same spot.
A Tool You Buy Once
A puller is a one-time purchase that stays in the toolbox for the life of the machine. Compared to a cracked sheave, a fresh set of main bearings, or a shop bill for a job you could have done in your garage, it is the cheapest part of the whole operation. If you plan on servicing your own clutches — and on a 570 or 800 that gets worked, you will — get the right puller before you get the wrench out.