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Did a compression test last night. ZERO reading. Which leads me to my next question: is there an compression release on these motors?

yes, there is a compression release. pull off valve cover and check valve clearance and timing. hard to believe it shows 0 psi. sounds like a bad gauge. or no piston   

Set the multimeter to read DC voltage (DCV).

Turn the ignition switch to the ON position.

Measure the input voltage on the harness side of the connector. Touch one meter lead to the input hot wire terminal and the other to a ground.

The voltage can only be measured within 3 seconds of the ignition switch being turned on. The battery voltage should show.

If the voltage is not in specification there is a short or open circuit in the wire.

If the voltage is in specification, but the malfunction code doesn’t go away, there is a problem with the ECM connector or the ECM.

what gram rollers did you use? sounds like you maybe went too light.

could be a bad brake switch. pull in each lever and make sure the rear brake light comes on. if not, there is your problem

I bought a 2010 UXV 500 from a friend for cheap that he said didn't go into gear. Started tearing into it and found out that the cases cracked from bevel gear failure. Also since there was no oil in it i believe someone was running it cause the cylinder is damaged and has signs of oil starvation. Does anyone know where I can get another engine without having to buy every piece of this engine from a dealer?

had a customers SXS do the same thing. hard abuse and it cracked the case around the bevel gear. you have to replace the case halves in a pair, im thinking the case was around $500 

I will post some for sale on eBay check in a few days.

Nice results! great machine for the money.

Msrp on that machine is dropping to $4,999

Oil change is 50 hrs or 600 miles