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Chapter 7 ASSEMBLY OF BASIC ENGINE
2.11 Piston - Install
(1) Insert the connecting rod into the cylinder liner care-
fully not to damage the liner, and slowly lower the pis-
ton to the upper surface of crankcase.
(2) Apply engine oil to the piston rings.
Place the end gaps equally spaced each other, avoiding
piston pin and thrust/anti-thrust directions.
(3) Hold the compression ring position of piston with
hands, and slowly insert the piston skirt into cylinder
liner.
Piston and Connecting Rod - Install
Piston Ring End Gaps - Place
Piston Skirt - Insert
(4) Verify again the positions of piston ring gaps.
Apply engine oil to the piston rings.
Apply engine oil to the inner surface of piston installer.
Verify the oil ring placed in the groove. Then, compress
the piston rings with piston installer.
Note: For piston ring placing, see above (2).
Piston Ring - Compress
When installing the piston, install the eye bolt to the
threaded hole on the piston top, and lift the piston with
chain block.When the installation work is done by
hand, be sure to take preventive measures so that pis-
ton does not falling down, and be very careful not to
hurt your hands and fingers or not to damage the
parts.
(a) Make sure that the "F" mark on top of the piston
faces the front of the engine.
(b) Checking through the inspection window on the
side of crankcase, make sure that the connecting
rod does not hit the piston cooling nozzle when
installing piston.
(c) To prevent the oil ring from impact damaging,
slowly insert the piston.
(
Camshaft
Be careful not to bump.
Eyebolt
P/N:45815-32201
(M8 × 1.25 mm)
Eyebolt
P/N:45815-32301
(M10 × 1.5 mm)
Engine front
“F” mark
No. 1 compression ring joint
Oil ring joint
Coil spring joint
No. 2 compression ring joint
Piston pin
Compression ring
Oil ring
Piston installer
P/N:37191-07100
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