Quote:
Originally Posted by Laird Scooby
Just to add a little useful info on this, turn the crankshaft clockwise as viewed from the front when lining up the marks. If you happen to miss them and go past, turn another nearly 2 full turns on the crank and be more careful next time. Sounds a bit fussy i know but there are many good reasons for this.
Not 100% sure this applies to the B21 but certainly on the B2xx engines, retension the belt after 600 miles by setting the timing to the timed position (crank @ 0deg, cam and aux shaft marks lined up against their notches) and release the tensioner locknut so the tensioner spring can take any slack out of the belt and then retighten the locknut.
This can be done (on the B2xx engines at least and i believe the B2x) simply by removing the rubber plug/grommet in the upper timing cover, checking the timing marks and using a socket through the rubber plug hole. Refit the rubber plug after.
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Good shout Laird; the B21s also have the rubber bung and the Haynes manuals DO recommend re-tensioning after a few hundred miles.