timing

I've just bought a 2016 450 SX-F. On first ride there were a couple puffs of blue smoke so I decided to re ring the piston. The bike has an Athena ECU and apparently had a high comp piston - I didn't know whether to trust the guy I bought it from and didn't want to have to do any re tuning by...

Hello there! Also greetings from Slovakia! (this forum easily said: rules the tech info :smokin:) So I want to ask you for advice, i have 520 EXC 2002 and this happened: One day, i was going on low RPMs and when i hit the throttle ...engine wasnt igniting. It was not starting, but when i put my...

Hi all, I'm new to the forum, so firstly, would like to say hello :). Secondly, does anyone know where the timing marks are on a 2007 SXF250, or the procedure for timing the engine from scratch. It is the DOHC engine by the way. Also, any recomended repairs manuals/CD's or downloads for the...