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How do you know the timing needs to be set? Check library for a repair manual. Usually the timing marks are marked on the front balancer pully mark the designated mark with something like whiteout so you can see it properly with a timing light.
The timing pointer must be aligned with the white mark on the flywheel. The cam pulley must be set so the small dot or the word UP is vertical and the marks on the edges of the pulley are aligned with the surface of the head, then the belt is fitted to the engine (pulley) and slid onto the cam pulley.
There is also a procedure for setting the adjusting bolt, which I assume you know?
timming marks on cams face each other 3 and 9 o clock crank mark at about 6 o clock mark in cover and sump auto adjuster arrow should be in v mark to set this requires turning water pump by loosening water pump bolts slightly be warned some times this causes pump o ring seal to leak if turning.
Cylinder #1 set at TDC, compression stroke. Cam marks level with head, aligned with mark on cover, or if unclear where to mark the cam: SET Cam at point where intake valve has just closed and both valves are shut on cyl. #1, cam gear marks should start to appear more clearly to technician, along with corresponding alignment points. This is ballpark. Remember, on clockwise rotation, after cylinder #1 intake valve(s) are shut, the cam will continue to rotate 90 degrees and come to rest at a position in which both exhaust and intake valves are at their maximum lash point. (the most play) Hopefully if you get this close, you will decipher the marks that exist on your Bavarian machine.
set the timing marks on the crankshaft and the cam marks head to head the marks should be with the cylinder number 1 an tdc top dead center on the compression stroke then adjust the cam so the marks are aligned remember the number 1 piston has to be @ tdc and the crank and cam marks are lined up ok bye for now good luck with it
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