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Cam chain adjuster

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matthewmosse:
When disassembling the engine you don't want any chain tension, hence locking it off in that way. For running the bike the tension needs to be on and right, the sping in the tensioner sets that if the locknut is loosed off and cam is in the prescibed position. The slotted screw has a cog on the other end that works against a 'rack' on the tensioner mechanism and I'd not worry about the angle the slot assumes, other than that it might help indicate wear in the tensioner blade if there was a dramatic shift after between adjustments. Other factor to look out for is when setting the tension, that the slotted screw can turn when tightening the locknut after setting tension, so hold the screw where it ends up after tensioning just while you tighten the locknut.

Yoshi823:

--- Quote from: honda-san on April 24, 2010, 08:32:03 PM ---That screw is NOT an adjuster! To adjust the can chain tension, all you do is looseb the locknut, with the crankshaft turned to a partcular position, and then re-tighten the locknut (the cam chain tension is automatically adjusted by a spring within the mechanism.
To find the correct crankshaft position, rotate the crankshaft so the T.14 mark aligns with the timing mark on the crankcase, make sure that the number 1 cylinder valves are closed (slack in both #1 cylinder tappets) - if not rotate a full turn and check for #1 tappet slack again. Then rotate the crankshaft a further 15
--- End quote ---

toucheturtle:
Solved problem almost straight away, the 2 and 3 points were closed, must have knocked them when turning the crank. bike is back to it's old self again now.

Many thanks for all the advise

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