● Coat rear oil seal of crankshaft with sealant, then mount it on the
crankshaft.
Note
：
Coat rear oil seal with sealant, and sealant should be
continuous.
● Press the oil seal into cylinder body assembly with proper tool.
Note:
※
Must coat the tool with lubricating oil.
● Take out of the guiding stick, tighten main and slave bolts of engine
body.
2.4 Pre-assemble & Assemble Connecting Stick and Piston
● Put 6 pistons with similar weight in the same group on assembly
table. Pistons with different weight are divided into 5 groups: G1, G2, G3,
G4 and G5. The pistons in the same group are assembled in the same
engine.
● Heat piston to 60-80 degree.
● Pre-assemble piston-connecting rod: Insert small end of connecting
rod into the inner cavity of piston, and make sure the small end bore is aligned
with piston pin bore, and then put in piston pin and snap ring of piston.
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