G-series crankshaft nut

[shifty <shifty@well.com>]

Hi folks,

What is the preferred method of turning the crankshaft on a G-series for 
valve adjustment, etc? The nut on the crankshaft pulley is huge (anybody 
know what size?) and is behind what looks to me like an attachment for a 
hand crank! It would take a very large and deep socket to get past the 
hand crank piece. Is there such a thing as a short hand crank?

Thanks,

Leigh Brooks
San Francisco