Yanmar 4LHA-HTP Operation Manual page 452

Chapter 3 Fuel Injection
3. Disassembly, Reassembly
(12) Mount double nuts o r a coupling on the end of the
camshaft, and pull o u t the roller guide support pin
as you turn the camshaft.
(13) Make sure that the roller guide stop groove is in the
correct position, and tighten the roller guide stop
bolts.
tightening torque
Equipment
and Inspection of Fuel Injection
5.9-6.9 (0.6-0.7) N(kgf)-m
Pump
3-2-30
4LHA Series