Polaris Sportsman 500 Cam Timing, Setting, cam chain

[@JoshuaJonah]

This was a helpful video. Before I watched this I was 180 degrees out, FYI the head is tall enough that even at 180, the valves won't hit the piston. I ended up pulling the flywheel like you have it in your video just to absolutely verify the cam and crank are in sync. I turned it around before and the valves were tight as hell and I realized I wasn't on the compression stroke when I set them. I have the service manual here and I've been following it, but you put it into reality I need to pull the flywheel to be sure I'm aligned with the block marks after a timing chain goes and everything is out of whack. The manual assumes you set it at TDC on compression and you haven't touched it since you took it apart. When you can't see valves moving and when the spark is triggered by the stator, it's very easy to end up with the piston up on the clearing stroke. Thanks Geezer, I appreciate it.

[@geezermoto7820]

I'm glad the vid was a help, setting cam timing on that engine is more obscure than most! Happy Thanksgiving Joshua!

[@buildurtruckurway9118]

According to my Polaris manual The factory way of doing it is completely different. The book states to bring the engine to top dead center. Line the single silver link on the timing chain up with the mark on the crank gear. Then line the 2 silver links up on 2 dots on the cam gear And that should be timed.

[@jmudd5449]

Yes do it the way the book says

[@Clapped14silvarado]

How does the tensioner work? Do you manually unwind it or is it a spring?

[@stevenertle2876]

Hey how are you I just came across your link for this timing on the Polaris Laris I have a 2001 Polaris 400 4 stroke I just put a remanufactured head on it a brand new cab my gear was in good shape the chain was in good shape but I noticed putting my rockers and everything on my camera slides in-and-out is it supposed to move it's the move there's nothing to lock it in now and now I know it'll tighten up somewhat when I put my Cam tensioner in but it's still moves because the cap on the left side that you take off the 3 screws The compression release made a little circular mark in it from the Cam moving now that was in the old head which wasn't bad shape either I I had a cracked water jacket somewhere after I did a whole top end on it and I had to tear it all down again pain in the ass but would you know why that would move that much if at all thank you

[@lookoutmountaingarockhunte1300]

THANK u

[@sxs4l245]

Them frog hairs. O toad hairs haors though, those are too many thousands....lol

[@geezermoto7820]

Lol