How to set timing? ZongShen ATV

[wilkins1981]

hey there i've got a 250 atv with a zongshen motor and i rebuilt it and i set the timing marks correct but i can't get the valve timing to set right. how woiuld you go about doing this. thanks its driving me maddd.

[forchetto]

You stand a much better chance of getting replies if you give us more clues, like the make of ATV, type of engine, aircooled or watercooled, (Zongshen make several types for ATV's), or even better, the engine type number.

Look around your crankcases, it'll be something like ZS171FMM.

[txm123]

The 125cc manual has some hints about the timing,not so clear but enough pictures where you can figure it out.Forchetto might have the manual and the directions you are looking for.

[wilkins1981]

its says 167mm on the case and its a ohv pushrod engine, i lined up the marks on crank and the mag its air cooledi don't got my regi yet so i don't know the brand but it has two big headlights in the front its a 4 speed clutch.The side of the head has a little screw on the side of it, ppl say to take the top off loosen the bolts on your top end then turn the screw but how? and what direction. plz help meee

[forchetto]

The 167MM engine appears to be watercooled, not aircooled as you say. See this link:

http://www.alibaba.com/product-gs/207145721/167MM.html

Is that the one?. If it is, I don't have any info on Watercooled Zongshen units.

[CrazyCarl]

Wilkins,

If no manual is available, the other option is to take some pictures of what your talking about and give us a detailed history of what you've done. These engines are not extremely complicated and the bottom line is we need to know more.

CC