ones.

Clutch Spring Inspection
If all the components are good, but the problem still exists, replace the clutch springs (see Clutch Removal and
Clutch Installation).

ENGINE LUBRICATION SYSTEM 7-1

Engine Lubrication System
Table of Contents
Exploded View........................................................................................................................
Engine Oil Flow Chart.............................................................................................................
Specifications .........................................................................................................................
Special Tools and Sealants ....................................................................................................
Engine Oil and Oil Filter..........................................................................................................
Oil Level Inspection...........................................................................................................
Engine Oil Change............................................................................................................
Oil Filter Replacement ......................................................................................................
Oil Pan....................................................................................................................................
Oil Pan Removal ...............................................................................................................
Oil Pan Installation ............................................................................................................
Oil Screen...............................................................................................................................
Oil Screen Removal ..........................................................................................................
Oil Screen Installation .......................................................................................................
Oil Screen Cleaning ..........................................................................................................
Oil Pressure Relief Valve........................................................................................................
Oil Pressure Relief Valve Removal ...................................................................................
Oil Pressure Relief Valve Installation ................................................................................
Oil Pressure Relief Valve Inspection.................................................................................
Oil Pump.................................................................................................................................
Oil Pump Removal ............................................................................................................
Oil Pump Installation .........................................................................................................
Oil Pump Drive Gear Removal..........................................................................................
Oil Pump Drive Gear Installation.......................................................................................
Oil Cooler (MY Model) ............................................................................................................
Oil Cooler Removal...........................................................................................................
Oil Cooler Installation........................................................................................................
Oil Pressure Measurement.....................................................................................................
Oil Pressure Measurement ...............................................................................................
Oil Pressure Switch ................................................................................................................
Oil Pressure Switch Removal ...........................................................................................
Oil Pressure Switch Installation ........................................................................................
Oil Pipe ...................................................................................................................................
Oil Pipe Removal ..............................................................................................................
Oil Pipe Installation ...........................................................................................................

7-2
7-4
7-5
7-6
7-7
7-7
7-7
7-7
7-8
7-8
7-8
7-10
7-10
7-10
7-10
7-11
7-11
7-11
7-11
7-12
7-12
7-12
7-13
7-13
7-14
7-14
7-14
7-15
7-15
7-16
7-16
7-16
7-17
7-17
7-17

7

7-2 ENGINE LUBRICATION SYSTEM
Exploded View

ENGINE LUBRICATION SYSTEM 7-3
Exploded View
No.

Fastener

1
2
3
4
5
6
7
8
9
10

Oil Passage Cover Bolts
Oil Filler Plug
Oil Passage Plug
Oil Passage Plugs
Oil Pressure Switch
Oil Pressure Switch Terminal Bolt
Oil Pressure Relief Valve
Oil Filter
Oil Filter Pipe
Engine Oil Drain Bolt
Lower Fairing Bracket Bolts, L = 16 mm
(0.63 in.)
Oil Pan Bolts
Lower Fairing Bracket Bolts, L = 12 mm
(0.47 in.)
Lower Fairing Bracket Bolts, L = 14 mm
(0.55 in.)
Oil Cooler Bolts

11
12
13
14
15

Torque
N·m
kgf·m
12
1.2
Hand-tighten
–
10
1.0
20
2.0
15
1.5
2.0
0.20
15
1.5
17
1.7
25
2.5
29
3.0

16. MY Model
EO: Apply engine oil.
G: Apply grease.
L: Apply a non-permanent locking agent.
LG: Apply liquid gasket.
M: Apply molybdenum disulfide grease.
R: Replacement Parts
S: Follow the specified tightening sequence.

ft·lb
106 in·lb
89 in·lb
15
11
18 in·lb
11
13
18
21

12

1.2

106 in·lb

12

1.2

106 in·lb

6.9

0.70

61 in·lb

9.8

1.0

87 in·lb

12

1.2

106 in·lb

Remarks
L

L
LG
G
L
G, R
L

S

L

7-4 ENGINE LUBRICATION SYSTEM
Engine Oil Flow Chart

1. Balancer Oil Passage
2. Camshaft Oil Passages
3. Drive Shaft Oil Passage
4. Output Shaft Oil Passage
5. Oil Pipe
6. Oil Pump
7. Oil Screen

8. Oil Pressure Relief Valve
9. Oil Filter
10. Oil Cooler (MY Model)
11. Oil Pressure Switch
12. Main Oil Passage
13. Crankshaft Oil Passage
14. Engine Oil

ENGINE LUBRICATION SYSTEM 7-5
Specifications
Item
Engine Oil
Type
Viscosity
Capacity

Level
Oil Pressure Measurement
Oil Pressure

Standard
API SG, SH, SJ, SL or SM with JASO MA, MA1 or MA2
SAE 10W-40
3.2 L (3.4 US qt) (When filter is not removed.)
3.6 L (3.8 US qt) (When filter is removed.)
4.0 L (4.2 US qt) (When engine is completely dry.)
Between upper and lower level lines (Wait several minutes after
idling or running)
About 295 kPa (3.01 kgf/cm², 42.8 psi) @4 000 r/min (rpm), Oil
Temperature 50°C (122°F)

7-6 ENGINE LUBRICATION SYSTEM
Special Tools and Sealants
Outside Circlip Pliers:
57001-144

Liquid Gasket, TB1211:
56019-120

Oil Pressure Gauge, 10 kgf/cm²:
57001-164

Liquid Gasket, TB1207B:
92104-2068

Oil Pressure Gauge Adapter, PT3/8:
57001-1233

ENGINE LUBRICATION SYSTEM 7-7
Engine Oil and Oil Filter
WARNING
Vehicle operation with insufficient, deteriorated,
or contaminated engine oil will cause accelerated
wear and may result in engine seizure, accident,
and injury. Check the oil level before each use and
change the oil and filter according to the periodic
maintenance chart.

Oil Level Inspection

that the engine oil level is between the upper [A]
• Check
and lower [B] levels in the oil level inspection window.

NOTE

○Situate the motorcycle so that it is perpendicular to the
ground.
○If the motorcycle has just been used, wait several minutes for all the oil to drain down.
○If the oil has just been changed, start the engine and
run it for several minutes at idle speed. This fills the oil
filter with oil. Stop the engine, then wait several minutes
until the oil settles.
NOTICE
Racing the engine before the oil reaches every part
can cause engine seizure.
If the engine oil gets extremely low or if the oil pump
or oil passages clog up or otherwise do not function
properly, the red warning indicator light (LED) and
oil pressure warning indicator will light. If it stays
on when the engine is running above idle speed,
stop the engine immediately and find the cause.
If the oil level is too high, remove the excess oil, using a
syringe or some other suitable device.
If the oil level is too low, add the correct amount of oil
through the oil filler opening. Use the same type and
make of oil that is already in the engine.

NOTE

○If the engine oil type and make are unknown, use any
brand of the specified oil to top off the level in preference
to running the engine with the oil level low. Then at your
earliest convenience, change the oil completely.

Engine Oil Change

to the Engine Oil Change in the Periodic Mainte• Refer
nance chapter.

Oil Filter Replacement

to the Oil Filter Replacement in the Periodic Main• Refer
tenance chapter.

7-8 ENGINE LUBRICATION SYSTEM
Oil Pan
Oil Pan Removal

• Remove:
Exhaust Pipe (see Exhaust Pipe Removal in the Engine

•

Top End chapter)
Oil Filter (see Oil Filter Replacement in the Periodic
Maintenance chapter)
Oil Pan Bolts [A]
Clamp
Oil Pan [B]
Remove the following parts if necessary.
Oil Screen (see Oil Screen Removal)
Oil Pipe (see Oil Pipe Removal)
Oil Pressure Relief Valve (see Oil Pressure Relief Valve
Removal)

Oil Pan Installation

a high flash-point solvent, clean off any oil or dirt
• Using
that may be on the liquid gasket coating area. Dry them

•

with a clean cloth.
Install the following parts if removed.
Oil Pressure Relief Valve (see Oil Pressure Relief Valve
Installation)
Oil Pipe (see Oil Pipe Installation)
Oil Screen (see Oil Screen Installation)
Replace the O-rings [A] with new ones.
Apply grease to the O-rings, and install them.
Install the dowel pins [B].

•
•
•
• Apply liquid gasket [A] to the mating surface of the oil pan.
Sealant - Liquid Gasket, TB1207B: 92104-2068

NOTE

○Especially, apply liquid gasket so that it shall be filled up
on the grooves [B].

ENGINE LUBRICATION SYSTEM 7-9
Oil Pan
NOTE

○Make the application finish within 7 minutes when the
liquid gasket to the mating surface of the oil pan is applied.
○Moreover fit the oil pan and tighten the bolts just after
application of the liquid gasket.
the oil pan bolts following sequence [1  22].
•○Tighten
Install the oil pan bolt [9] with the clamp [A].
Torque - Oil Pan Bolts: 12 N·m (1.2 kgf·m, 106 in·lb)

• Install the removed parts (see appropriate chapters).

7-10 ENGINE LUBRICATION SYSTEM
Oil Screen
Oil Screen Removal

• Remove:
Oil Pan (see Oil Pan Removal)
Oil Screen [A]
Rubber Dumper [B]

Oil Screen Installation

the oil screen (see Oil Screen Cleaning).
• Clean
the O-ring [A] with a new one, and install it.
• Replace
Apply
grease
to the O-ring.
• Install the rubber
damper [B] to the oil pressure relief
• valve.
• Install:
Oil Screen
Oil Pan (see Oil Pan Installation)

Oil Screen Cleaning

the oil screen (see Oil Screen Removal).
• Remove
the oil screen with a high flash-point solvent and
• Clean
remove the particles stuck.
away the particles by applying compressed air [A]
• Blow
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 screen, check for any metal particles
that might indicate internal engine damage.
the screens carefully for any damage.
• Check
If the screen is damaged, replace the oil screen.

ENGINE LUBRICATION SYSTEM 7-11
Oil Pressure Relief Valve
Oil Pressure Relief Valve Removal

• Remove:
Oil Screen (see Oil Screen Removal)
Oil Pressure Relief Valve [A]

Oil Pressure Relief Valve Installation

a non-permanent locking agent to the threads of
• Apply
the oil pressure relief valve, and tighten it.
Torque - Oil Pressure Relief Valve: 15 N·m (1.5 kgf·m, 11
ft·lb)

• Install the oil screen (see Oil Screen Installation).
Oil Pressure Relief Valve Inspection

to see if the valve [A] slides smoothly when push• Check
ing it in with a wooden or other soft rod, and see if it comes
back to its seat by spring [B] pressure.

NOTE

○Inspect the valve in its assembled state.

Disassembly
and assembly may change the valve performance.

If any rough spots are found during above inspection,
wash the valve clean with a high flash-point solvent and
blow out any foreign particles that may be in the valve with
compressed air.

WARNING
Gasoline and low flash-point solvents can be
flammable and/or explosive and cause severe
burns. Clean the oil pressure relief valve 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 oil pressure relief valve.
If cleaning does not solve the problem, replace the oil
pressure relief valve as an assembly. The oil pressure
relief valve is precision made with no allowance for replacement of individual parts.

7-12 ENGINE LUBRICATION SYSTEM
Oil Pump
Oil Pump Removal

• Remove:
Water Pump (see Water Pump Removal in the Cooling
System chapter)
Oil Pump Cover [A]

• Remove:
Oil (Water) Pump Shaft [A] with Inner Rotor [B]
Outer Rotor [C]

Oil Pump Installation

• Install the outer rotor [A] into the crankcase.

grease to the pin [A].
• Apply
the pin, inner rotor [B] and oil (water) pump
• Assemble
shaft [C].

the pump shaft so that the slot [A] in its shaft fits onto
• Turn
the projection [B] of the pump drive gear shaft.

ENGINE LUBRICATION SYSTEM 7-13
Oil Pump
grease into the cavity [A] between the inner rotor
• Pack
and outer rotor for improve the oil pump initial priming.
the dowel pin [B].
• Install
Install
the
cover [C] so that the dowel pin fits into
• the hole [D]oilofpump
the oil pump cover.
the water pump (see Water Pump Installation in the
• Install
Cooling System chapter).

Oil Pump Drive Gear Removal

• Remove:
Clutch (see Clutch Removal in the Clutch chapter)
Oil Pan (see Oil Pan Removal)
Circlip [A] and Washer [B]
Special Tool - Outside Circlip Pliers: 57001-144

• Remove:
Oil Pump Drive Gear [A]
Washer [B]

Oil Pump Drive Gear Installation

molybdenum disulfide oil solution to the hole of the
• Apply
oil pump drive gear shaft in the crankcase.
molybdenum disulfide grease to the journal portion
• Apply
[A] on the oil pump drive gear shaft [B].
• Install the washer [C] to the shaft.

the circlip [A] with a new one.
• Replace
the oil pump drive gear to the lower crankcase.
• Insert
Install
the washer [B] and circlip.
•
Special Tool - Outside Circlip Pliers: 57001-144

the projection on the shaft and oil (water) pump shaft
• Fit
slot.
• Set the circlip to the original position.

7-14 ENGINE LUBRICATION SYSTEM
Oil Cooler (MY Model)
Oil Cooler Removal

the lower fairings (see Lower Fairing Removal in
• Remove
the Frame chapter).
• Drain:
Coolant (see Coolant Change in the Periodic Mainte-

•
•
•