Refer to “engine bottom side disassembly” (page 1d- 49).
Refer to “engine bottom side assembly” .
Conrod small end I.D.
Measure the conrod small end inside diameter using the small bore gauge.
If the conrod small end inside diameter exceeds the service limit, replace the conrod.
Special tool
(a): 09900–20602 (dial gauge)
(b): 09900–22401 (small bore gauge
(10 – 18
mm))
Conrod small end i.D.
Service limit: 15.040 Mm (0.5921 In)

Conrod big end side clearance
Special tool
(a): 09900–20803 (thickness gauge)
Conrod big end side clearance service limit: 0.30 Mm (0.012 In)

Special tool
(b): 09900–20205 (micrometer (0 –
25 mm))
(c): 09900–20605 (dial calipers (10
– 34
mm))
Conrod big end width standard: 19.95 – 20.00 Mm (0.7854 – 0.7874 In)
Crank pin width standard: 20.10 – 20.15 Mm (0.7913 – 0.7933 In)

Crankshaft runout
Support the crankshaft using v-blocks as shown, with the two end journals resting on the blocks. Set up the dial gauge as shown, and rotate the crankshaft slowly to read the runout. Replace the crankshaft if the runout exceeds the service limit.
Special tool
(a): 09900–20607 (dial gauge)
(b): 09900–20701 (dial gauge chuck)
(c): 09900–21304 (v blocks)
Crankshaft runout service limit: 0.05 Mm (0.002 In)

Conrod crank pin bearing removal and
installation
Conrod crank pin bearing inspection and
selectionStarter torque limiter removal and
installation
Removal
Remove the clutch assembly. Refer to “clutch removal” in section 5c .
Remove the washer (1), starter idle gear no. 1 (2)
And starter torque limiter (3).
Installation
Installation is in the reverse order of removal. Pay
attention to the following point:
apply ...
Transmission removal
Remove the engine assembly from the frame. Refer to “engine assembly
removal” in section 1d .
Remove the engine top side. Refer to “engine top side disassembly” in
section 1d .
Separate the upper and lower crankcases. Refer to “engine bottom side
disassembly” in section 1 ...
Oil pan / oil pressure regulator / oil strainer
removal and installation
Note
the oil pan/oil strainer/oil pressure regulator
cannot be serviced with the engine installed
in the frame.
Removal
Remove the engine assembly from the frame. Refer to “engine assembly
removal” in section 1d .
Remove the plate (1).
Remove the oil pan ...