How To Set Valve Lash on a 4-Stroke Dirt Bike / ATV (Polaris Predator 500 Example)

In this video I show how to set valve lash on a 4-stroke Dirtbike, quad, or motorcycle engine using the cylinder head from a 2003 Polaris Predator 500 as an example. This process applies to the majority of four-stroke dirt bikes, ATVs, and motorcycles that replaceable valve shims. I walk through the basic steps including using feeler gauges, measuring unlabeled valve shims, and properly torquing the cam tower/cap. This is a straightforward guide meant to help you understand the process whether you're working on a dirt bike, quad, or motorcycle engine. Tools used: Feeler gauges Magnet Torque Wrench Valve Shims Assembly oil/lube Wrench Clean work surface Bike used in demonstration: 2003 Polaris Predator 500