The valve shims have a different part number so I will wait until my dealer finds out what shim they use and has an assortment in stock. Yamaha has a valve clearance check at 200 miles plus again every 1,500 miles. Adjustment is probably not necessary until 10,000 to 25,000 like the road bikes. The spec is intake .004" to .008" exhaust .0087" to .0126" So middle would be in .006" and ex .010 or .011" I expect Yamaha will have the valves set properly.
Polaris on the other hand is a crap shoot. Some are in spec and many have no clearance at all. One of my RZR's was in spec and the other one had no clearance on 3 of the valves. All 4 needed adjustment and the tight valves caused hard starting but the idle was still fairly good.
Polaris on the other hand is a crap shoot. Some are in spec and many have no clearance at all. One of my RZR's was in spec and the other one had no clearance on 3 of the valves. All 4 needed adjustment and the tight valves caused hard starting but the idle was still fairly good.