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'06 fe550e Cam chain install and rear guide issues.

Joined Oct 2023
74 Posts | 9+
Northern Nevada
I am installing a new cam chain on my 2006 fe550e. I had to remove the rear (closest to the back tire) plastic guide so I could get the timing marks all lined up while pulling the chain tight on both sides.
With the new chain in place, I slid the plastic guide back in place and installed the guide and its single bolt at the top. The guide seems stiffer than it was and doesn't feel like it can swing freely. It may be because it's a new chain with very little slack - so it is already pushing against the guide, even without the tensioner installed.

Should I be concerned?

Thanks
 
that sounjds about right. but you should have had the cam chain tensioner out.

Better still it WAS POSSIBLE to fit the chain with the tensioner blade in. But you are where you are now.

A new chain will see the TB pushed back hard against the view hole where you are about to put the tensioner back into set to 'zero' clicks. It will click at most once if at all.

Taffy
 
Thanks, Taffy. I read the section in the manual multiple times but didn't understand the sequence. I did the installation without turning the cam or crank from their timing marks- it's not easy, but it's done. The tensioner and plastic guide were both out when I installed the new chain. I have the tensioner back in and got about three clicks with a light push using a small punch.

The threaded bush in the guide looks good and spins freely in the guide end. Once installed. the guide must be up against the new, tighter chain as soon as it's in place and that's why it feels stiff. As for the three clicks VS only one, how hard one pushes against it with a pin, is a bit subjective, but I don't think I pushed very hard. I am pushing harder than the spring would but, the manual does say to push on it.

I'll take the tensioner back out, reset it to zero, and try it again. As a Mechanical Engineer, I would think the spring would do all the tensioning right from the start. I know that a roller chain does have some break-in stretch, and this may be what the "push" makes up for.

valve clearance capture.JPG



Thanks for your input Taffy.
 
The IWIS are very good, they don't even break in. Funnily enough, if you truly 'blueprint' a Husaberg engine and check the top cam sprocket over the bottom one; they aren't aligned. tish! tish!

Taffy
 

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