If the oil filter holder bolt [A] was removed, tighten it.
Apply a non-permanent locking agent to the threads of the oil filter holder bolt.
Torque - Oil Filter Holder Bolt: 35 N·m (3.6 kgf·m, 26 ft·lb)


Blow away the particles by applying compressed air [B] from the inside to the outside (from the clean side to the dirty side).

| WARNING Gasoline and low flash-point solvents can be flammable and/or explosive and cause severe burns. Clean the screen in a well-ventilated area, and take care that there are no sparks or flame anywhere near the working area; this includes any appliance with a pilot light. Do not use gasoline or a low flash-point solvent to clean the screen. |
NOTE
While cleaning the oil screen, check for any metal particles that might indicate internal engine damage.
If the screen is damaged, replace it.
Face the flanged side [B] to the bottom.
Lower Crankcase [C]
Face the knob of the clamp [F] inward as shown in the figure.
Viewed from Bottom [G]

Turn the chamfered side [C] downward.
Fit the claws [E] to the crankcase rib [F].

Torque - Oil Pan Bolts: 9.8 N·m (1.0 kgf·m, 87 in·lb)
Front [D]

Oil Pan RemovalAir Switching Valve
Air Switching Valve Operation Test
Refer to the Air Suction System Damage Inspection in the
Periodic Maintenance chapter.
Air Switching Valve Unit Test
Remove the air switching valve (see Air Switching Valve
Removal in the Engine Top End chapter).
Set the hand tester [A] to the × 1 ...
Starter Clutch Installation
Replace the O-ring [A] with a new one and apply grease.
Apply molybdenum disulfide grease to the starter clutch
shaft [B].
Install:
Starter Clutch [C]
Spacer (Small Diameter) [D]
Spacer (Large Diameter) [E]
Starter Clutch Shaft
Starter Clutch Shaft Holder [F]
Turn the O-ring si ...
Stem, Stem Bearing Installation
Replace the bearing outer races with new ones.
Drive them into the head pipe at the same time.
Special Tools - Head Pipe Outer Race Press Shaft [A]:
57001-1075
Head Pipe Outer Race Driver,
55 [B]: 57001
-1446 or Bearing Driver Set: 57001-1129
Apply grease to the outer races.
...