High-G FJR Junkie!
Join Date: Jan 2013
Location: Millgrove, ON, CA
You've likely got the original tensioner, which was redesigned late '07 model, then revised again later. Get the new one with the paint dot on it, better spring.
You can remove the dowel on the timing cover which holds the rear cam chain guide in place. With a little finagling now with a looser chain you can get the chain worked around the crank sprocket one tooth. IF you turn the trigger wheel nut CCW, make sure you have the spark plugs out. IF it loosens, you can simply retorque it but pull it all the way out and use some blue loctite. To retorque just put it in gear with the rear wheel on the ground or something between the spokes. Doesn't take much to hold it.
You did not damage it if off only one tooth... two teeth, well maybe not sure, but three teeth not good. Compression test/leakdown test would confirm (note a certain amount of leakage is normal, 5-10% ok, ideally nothing of course. You will get varying compression readings if the engine is not warmed up. A teaspoon of oil in the spark plug holes will eliminate piston ring leakage. But I suspect you're fine.
One tooth off will affect performance, i.e., may not develop full horsepower at 6000 rpm... it will hesitate to "go fast". Should be OK with all your timing marks lined up.
Lesson learned here to all Gen1 and 2 owners prior to '08... change that freakin' tensioner to the new one... gets awful expensive if you don't.
Keep yer stick on the ice....
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