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Hello all, Im fitting a new camchain gear to crank and wondering how it is timed... Im thinking line a tooth up with keyway and press on there... Is this correct??? Can someone confirm this... Does anyone have a workshop manual on these...

Welcome to the site !!

What year CRF100 is it ??

Thanks Jimdirt... Looking forward to yarning to you guys .. Bike is a 2009

With the ignition cover off you should see some marks on the flywheel , the T mark should point straight up and align with the mark on the case , the cam sprocket should have a dot , it should face straight up as well , and the sprocket bolts should be level like this
O O , I believe that engine has 2 timing chain tensioners , one near the bottom of the cylinder , at the rear on the left side , and one near the top of the head on the same side (ignition cover side) , the bottom is the main one for setting the basic tension and should automatically set once you loosen the adjuster bolt , then once the bike is running , if you hear any ticking , you adjust the top one on the head to fine tune it if needed .....

Yeah thanks jimdirt... but what I need to know is the crankshaft camchain gear... position to press on... will try upload photo in morning at workshop.. as this is all new to me this site...

To post a picture you need a hosting site like IMGUR or something , you use the links for Forums or Message Boards , then copy that link and paste it into you post it will look like this [img]https:/ /i.imgur.com/LOQoe1O.jpg[/img]

but show up like this

From memory with the little xr engines, with the lobes facing down the cog goes with O marking at the top.

lets see if this works... these are the pictures of camchain gear that needs to be pressed on crank

Yikes !!! , hopefully you have a replacement gear because that one is toast ....... but to answer your question , you align one of the teeth directly centered to the keyway

Yep have one on its way... Thanks for confirmation Jimdirt.... Much appreciated...

And I am guessing a new tensioner as well to stop it happening again.
Have to be the worst sprocket I have seen.

Yes new tensioner,valves,chain and sprockets...

Afternoon
Parts have arrived ready to assemble does anyone have torque settings for this ..
Properly only need head nuts/rocker gear torque..
But if someone as list would be great.. cheers guys