I recently replaced the cylinder head, head gasket, timing belt,
injector heat shields, timing belt, and tensioner on my 78 VW Rabbit
Diesel. The car will start and idle, but has no torque, and lots of
blue smoke, and dies when I pull the injector advance knob. I
concluded that now that a new timing belt and tensioner has been
installed, the injector timing is off.

I followed the steps in the Bentley manual to measure the injector
timing. Using the dial, I have found that the injection timing is set
to 1.32mm (Spec is .83mm).

I can't figure out how to adjust the injector timing....I have loosened
the three allen head bolts on the injector pump plate per the manual.
I can not remove the bolt w/ the yellow paint w/ the standard type
screw head, it's stuck. I don't know how to "turn the pump". The
instructions are vague in both the Bentley and Haynes manuals.

Do I need to loosen the screw with the yellow paint in addition to the
three allen head bolts? Have I loosened the correct screws? Now, how
do I adjust the pump down to .83mm?

Thank you!

Jeff