Blowby in the crank case is a tight valve or leaking ring issue...and doesn't affect idle quality. Now, if valves are too tight and causing blowby, then idle may be affected just because of the tight valves. Also, you're better off to start a new thread than to tack on to an existing unrelated thread.

Round two of the 2021 ATV Motocross Championship Series (ATVMX), an AMA National Championship, headed to the Lonestar state while another epic battle was on tap as defending champion Wienen Motorsport/Maxxis/SSi Decals/Fly Racing/Yamaha’s Chad Wienen was looking to capitalize on his win at the opening round. View the full article

Will this manual work for a 450 sportsman 450 HO? I'm trying to find a manual for valve adjustment and finding TDC.

I'm trying to get my atv to TDC to check valves. Im attempting to do this with the engine still on chassis. Can someone tell me where I can remove a plug to ensure I am on TDC? Thanks

Can I put malossi race parts on to my Apache 100cc