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
selectionThrottle cable routing diagram
Throttle cable no. 1
Throttle cable no. 2
Clutch cablev
Front brake hose
Pass
the throttle cables in front of the front brake hose.
Pass the
clutch cable above the right air intake pipe.
Clamp the
clutch cable at the white taping point and m ...
Fuel pump relay inspection
Refer to “electrical components location” in section 0a .
Inspect the fuel pump relay in the following procedures:
remove the frame covers. Refer to “exterior parts
removal and installation” in section 9d (page 9d-
6).
Remove the fuel pump relay (1).
First, check f ...
Piston and piston ring inspection
Refer to “piston ring removal and installation” .
Piston diameter
Measure the piston diameter using the micrometer at 15
mm (0.6 In) “a” from the skirt end. If the piston diameter
is less than the service limit, replace the piston.
Special tool
(a): 09900–20203 (micrometer (50 –
75 mm))
Pis ...