remove magnet then unscrewe two bolts ant there will be your chain
line up the timing marks on the flywheel and cam
line up the t mark on flywheel. Then line up stamp on timing gear on cam with indent on top of head.
Check out my bio page for help on setting your timing.
To set the timing on a 1985 ATC 250 SX, first, remove the left side cover to access the ignition system. Use a timing light and align the timing mark on the flywheel with the designated mark on the stator at the specified RPM (usually around 1,500 RPM). Adjust the stator by loosening the screws and rotating it until the marks align, then tighten the screws securely. Reassemble the cover and test the engine to ensure proper timing.
If you do not still have your chain tensioner attached you need to slack the four bolts on rear end housing pull rearend tight as possible and retighten your four bolts
* ALL TERRAIN CYCLE
GENCO ATC's population is 10,000.
GENCO ATC was created in 1898.
P-ATC or MR-ATC
.003 for '83-'85 atc 200x's
ATC stands for Athletic Trainer Certified
GENCO ATC's motto is 'Product Lifecycle Logistics'.