2016 Yamaha Viper Low Compression on PTO Cylinder

[Cdombro]

I just purchased a sled that has low compression issues, specifically on the PTO cylinder, which is measuring only 125 psi. In contrast, the other cylinders are showing readings between 175 and 180 psi. I decided to pull the motor after learning that the previous owner had taken it to the dealership, where they discovered scoring on the cylinder. Upon disassembling the engine, I found no bent valves, the rings are in good condition, and there are no cracks in either the piston or the head. However, I did notice a slight rough area on the cylinder wall. Before I proceed with honing it, I'm curious if anyone knows whether these cylinder walls are coated with Nikasil or not?

 

[Srxspec]

They are nikasil coated, yes.

 

[Froggy]

I was just wondering what the valve clearance was like, I had a 2016 that was hard to start after 13,000 km and valves were tight and needed to be shimmed which caused low compression on the PTO and center cylinder.