| Note the crankcase must be separated to service the crankshaft and conrod. |
Crankcase breather (pcv) cover
Remove the crankcase breather (pcv) cover (1).

Starter motor
Remove the starter motor (1).

Clutch
Remove the clutch component parts (1). Refer to “clutch removal” in section 5c .

Gearshift system
Remove the gearshift shaft (1) and gearshift cam plate (2). Refer to “gearshift shaft / gearshift cam plate removal and installation” in section 5b .

Starter torque limiter / starter clutch
Remove the starter torque limiter (1) and starter clutch (2) component parts. Refer to “starter torque limiter removal and installation” in section 1i and “starter clutch removal and installation” in section 1i .

Cam chain / cam chain tensioner / cam chain guide no. 1


Generator
Remove the generator cover (1) and rotor. Refer to “generator removal and installation” in section 1j .

Water pump


Gear position switch
Remove the gear position switch (1).

Oil pressure switch
Remove the oil pressure switch lead wire (1) and switch (2).

Oil filter
Remove the oil filter (1) with the special tool.
Special tool
(a): 09915–40610 (oil filter wrench)

Oil pan

Oil pressure regulator / oil strainer


Oil pump




Crankcase

| Note loosen the crankcase bolts diagonally and smaller size ones first. |




Balancer shaft
Remove the balancer shaft assembly (1) and plug (2).

Transmission
Remove the transmission component. Refer to “transmission removal” in section 5b .


Crankshaft



Piston cooling oil jet
Remove the piston cooling oil jet (1) from the upper crankcase.

Piston / conrod
| Caution be careful not to damage the cylinder wall by the conrod. |



| Note scribe the cylinder number on the piston head. |

Crankshaft journal bearing
Remove the crankshaft journal bearings, upper and lower.
Caution
|
Note
|


Oil jet
Remove the oil jet (1) (for transmission) from the lower crankcase.

Oil gallery plug




Water jacket plug
Remove the water jacket plugs (1) from the upper crankcase.

Oil seal / bearing
Remove the oil seal and bearings if necessary. Refer to “transmission removal” in section 5b .

Breather oil return plate
Remove the breather oil return plate (1) from the upper crankcase.

Valve seat repair
Engine bottom side assemblySchematic and routing diagram
Fuel tank drain hose and breather hose routing diagram
Fuel tank water drain hose
Fuel tank breather hose no. 1
Fuel tank breather hose no. 2
Fuel tank breather hose no. 3
3-Way joint
Frame
White marking
Set the
hose end to the root of tank nippl ...
Rear turn signal light bulb replacement
Caution
when you touch the bulb with your bare
hands, clean the bulb with a cloth moistened
with alcohol or soap water to prevent
premature bulb failure.
Remove the rear turn signal light lens (1).
Replace the bulb (2).
Reinstall the removed parts
...
Water pump construction
Impeller
Mechanical seal
Oil seal
O-ring
O-ring
8
N·m (0.8 Kgf-m, 6.0 Lbf-ft)
10 N·m
(1.0 Kgf-m, 7.0 Lbf-ft)
Apply grease.
Apply engine coolant.
Apply molybdenum oil
solution.
Do not reuse.
...