16-12-15, 05:26 PM
Timing marks should all line up spot on.
It's a bit of a faff, but it's easy to get things one tooth out either way, especially when the cams rotate when you tighten them down.
I don't know how critical it is for the running of the bike though.
I did mine with the engine removed from the bike and it took me about 4 attempts as I'd never done it before.
Get the crank lined up, keep the chain tight and install the front camchain guide, this will stop it jumping teeth on the crank, then fit the, the chain over the cams, then there's a combination of tightening everything, fitting the top guide and chain tensioner, and tightening down the cams without it jumping teeth.. Which is what it wants to do, as the valve springs push against the cams and try to rotate them out of sync.
I'm sure there is a technique to do it easily but for me it was a combination of trial and error, swearing and throwing tools!
It's a bit of a faff, but it's easy to get things one tooth out either way, especially when the cams rotate when you tighten them down.
I don't know how critical it is for the running of the bike though.
I did mine with the engine removed from the bike and it took me about 4 attempts as I'd never done it before.
Get the crank lined up, keep the chain tight and install the front camchain guide, this will stop it jumping teeth on the crank, then fit the, the chain over the cams, then there's a combination of tightening everything, fitting the top guide and chain tensioner, and tightening down the cams without it jumping teeth.. Which is what it wants to do, as the valve springs push against the cams and try to rotate them out of sync.
I'm sure there is a technique to do it easily but for me it was a combination of trial and error, swearing and throwing tools!
-suck-squeeze-bang-blow-