Wrist Pin; Connecting Rod - Honda GX 120 Tech Manual

WRIST PIN

Stock Honda wrist pin and retainer

CONNECTING ROD

Stock Honda rod with no alterations.
A. Connecting rod big end size: 1.021" minimum - 1.0265" maximum
B. Pin end bore is 0.5111 ref.
C. Length from bottom of pin bore to top of big end bore will be:
D. Rod weight with bolts: 119 grams or 4.2 oz minimum
E. No oil grooves on bearing surface of either end.
CRANKSHAFT
Stock Honda crankshaft with no alterations.
Notes:
A. No removal or addition of any metal from or to the crankshaft is allowed.
B. No balancing of the crank is allowed.
C. No oil grooving is allowed on the crank journal.
D. Governor drive gear can not be removed.
E. Crankshaft drive gear should not be removed. This gear is installed by Honda to any accuracy of + 1/2
degree. If this gear is not installed to this degree of accuracy, engine may not be legal when camshaft is
checked by the procedure under engine block.
F. Keyway location must not be altered in any manner.
G. Measure thrust to crank gear side: 3.345 Min.
Oil Ring: 3 piece lower 0.095"min. 1 piece 0.097" min.
OD: 0.511 ref.
Length: 1.854" + 0.010"
ID: 0.354"
Weight: 23 grams minimum
2.111" maximum 2.101" minimum
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