Crankshaft – Mark I & II models
There are two versions of the crankshaft – each similar in shape and design.
Mark I and II heads are fitted with the thicker diameter crankshaft – (diameter approx 0.8cm) – Part number 044909-000-000.
This crankshaft can also be fitted to the SO “Shearmaster” head – Model EW310C
Mark III is fitted with the later and thinner crankshaft – Part number 103782-000-000
Part number: 044909-000-000
See head diagram – item 15