High-G FJR Junkie!
Join Date: Jan 2013
Location: Millgrove, ON, CA
There was (is) a cam chain tensioner issue '07 and prior, older design tensioner had a weak spring and got weaker with age. Sometimes detectable by rattling noises occasionally on the right side of the engine (where the cam chain is). A few have had engines destroyed... no tension on the cam chain, it skips, and valve timing goes way off... If you ever hear that, IMMEDIATELY you need to get the latest CCT. I would almost bet yours is the original, will have no paint dot on the mounting flange... just go get one.
The FJR has an interference design, so when the valves go off timing by more than two teeth, valves hit pistons, very bad things happen and you go shopping for a new engine.
There is a procedure to change it, to preserve valve timing... basically, remove right side timing cover, zip tie the cam chain at the crankshaft end to prevent it dropping down and skipping teeth, then remove old tensioner... bit of a job, not much room to work... a broken off 8mm wrench and you can get at one of the mounting bolts from below. While those bolts are out, cut a slot in the heads and it will be much easier to seat the bolts via the slot in the frame using a screwdriver.....
There were a couple of revisions to the CCT after '07, but online parts sources list the latest usually. Get this out of the way, do regular maintenance and you'll have many miles and smiles.
Keep yer stick on the ice....
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