Page 27 of 382

SPECMAINTENANCE SPECIFICATIONS
2-6
Item Standard Limit
Valve spring
Inner spring:
Free length intake40.10 mm 38.10 mm
exhaust 40.10 mm 38.10 mm
Installed length
(valve closed) intake22.70 mm •••
exhaust 22.70 mm •••
Compressed spring force
(installed)intake164.80 - 190.20 N •••
16.80 - 19.39 kg •••
exhaust 164.80 - 190.20 N •••
16.80 - 19.39 kg •••
Spring tilt intakeintake •••2.5 °/1.7 mm
exhaust ••• 2.5 °/1.7 mm
Winding direction
(top view)intakeClockwise
exhaust Clockwise
Outer spring:
Free length intakeintake43.80 mm 38.10 mm
exhaust 43.80 mm 38.10 mm
Installed length
(valve closed)intake34.20 mm •••
exhaust 34.20 mm •••
Compressed spring force intake71.60 - 87.30 N •••
(installed)7.3 - 8,9 kg •••
exhaust 149.10 - 182.40 N •••
15.2 - 18.6 kg •••
Spring tilt intake •••2.5 °/1.7 mm
exhaust ••• 2.5 °/1.9 mm
Winding direction
(top view)intakeCounterclockwise
exhaust Counterclockwise
Piston
Piston-to-cylinder clearance 0.045 - 0.065 mm 0.15 mm
Diameter D 94.915 - 94.965 mm •••
Height H 5.0 mm •••
Piston pin bore inside diameter 22.004 - 22.015 mm •••
Offset 2.00 mm •••
Offset direction Intake side
Piston pin outside diameter 21.991 - 22.000 mm •••
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Page 58 of 382
VALVE CLEARANCE ADJUSTMENT
3-4
INSP
ADJ
ENGINE
VALVE CLEARANCE ADJUSTMENT
NOTE:
•Valve clearance must be adjusted when the
engine is at ambient temperature.
•Adjust valve clearance with the piston under
compression at top dead centre (T.D.C.).
WARNING
Hold the motorcycle firmly in place to prevent
it falling over during the operation.
1. Remove:
•Seat
•Fuel tank
See the section “ SEAT, FUEL TANK AND
REAR COWLING”.
2. Disconnect:
•Spark plug cap (1)
3. Remove:
•Spark plug
•Tappet cover (2) (intake)
•Tappet covers (3) (exhaust)
When removing the spark plug and tappet
cover, be careful not to drop foreign objects
inside the engine.
4. Remove:
•Cap (1)
•Cap (2)
CAUTION:
5. Turn the crankshaft anticlockwise using a
wrench.
1
2
3
12
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Page 59 of 382
INSP
ADJ
VALVE CLEARANCE ADJUSTMENT
3-5
6. Align:
•Reference mark “T” on the flywheel (1)
with the fixed reference mark on the
crankcase (2).
NOTE:
Check that the piston is under compression at top
dead centre (T.D.C.).
(3) Ignition timing reference mark
7. Check:
•Valve clearance
Out of specification ➔Adjust.
Valve clearance (cold):
Intake:
0.05 ~ 0.10 mm
Exhaust:
0.12 ~ 0.17 mm
8. Adjust:
•Valve clearance
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
Adjustment:
•Loosen the lock nut (1).
•Fit a thickness gauge (2) between the rocker
arm and the valve stem.
•Turn the adjuster (1) clockwise or anticlock-
wise using the special tool (2) to obtain the
required clearance.
Special tool:
P/N. 90890-01311
•Holding the adjuster firmly in place, lock tight-
en lock nut.
Lock nut:
14 Nm (1.4 mkg)
•Measure valve clearance.
If the clearance is incorrect, repeat the previ-
ous stages to achieve the required value.
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
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Page 62 of 382
THROTTLE CABLE FREE PLAY ADJUSTMENT
3-8
INSP
ADJ
THROTTLE CABLE FREE PLAY
ADJUSTMENT
NOTE:
Before adjusting the throttle cable free play, adjust
the engine idle speed.
1. Remove:
•Seat
•Fuel tank
See section “SEAT, FUEL TANK AND
REAR COWLING”.
2. Check:
•Throttle cable free play (a)
Out of specification ➔Adjust.
Throttle cable free play:
3 ~ 5 mm (at the grip flange)
3. Adjust:
•Throttle cable free play
▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼▼
▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲▲
Adjustment:
•Loosen the throttle cable (2) lock nuts (1).
•Turn the adjuster (3) clockwise or anticlock-
wise to obtain the required free play.
•If after loosening the adjuster by 5 mm, the
free play is still not correct, tighten the
adjuster (4) on the throttle cable (5) once
more.
•Tighten the lock nuts.
(1), (6) Lock nuts
4. Reassemble:
•Fuel tank
•Seat
See section “SEAT, FUEL TANK AND
REAR COWLING”.
a
Seat screws:
10 Nm (1,0 mkg)
2
1
3
6
4
5
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Page 108 of 382
CHECKING THE FUSES/
REPLACING THE HEADLIGHT BULBS
3-54
INSP
ADJ
WARNING
Never use a fuse with an amperage rating
other than that specified. Improvising or using
a fuse with the wrong amperage rating may
cause extensive damage to the electrical sys-
tem, cause the lighting and ignition systems
to malfunction and could possibly cause a fire.
4. Install:
•Pannel
•Seat
REPLACING THE HEADLIGHT BULBS
Low beam/high beam
1. Remove:
•Cowling screws (1)
2. Remove:
•Cowling (from the meter bracket)
NOTE:
Remove the cowling from the meter bracket by
lowering it to disengage it, and then lifting it up.
3. Remove:
•Headlight (2)
4. Disconnect:
•Headlight coupler (3)
5. Remove:
•Headlight bulb cover (4)
6. Remove:
•Headlight bulb holder (5) (by turning it
counterclockwise (a))
•Headlight bulb
WARNING
Headlight bulbs get very hot. Therefore, keep
flammable products away from a lit headlight
bulb, and do not touch the bulb until it has
cooled down.
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Page 109 of 382

INSP
ADJ
REPLACING THE HEADLIGHT BULBS
3-55
Auxiliary light bulb
1. Remove:
•Cowling screws (1)
2. Remove:
•Cowling (from the meter bracket)
NOTE:
Remove the cowling from the meter bracket by
lowering it to disengage it, and then lifting it up.
3. Remove:
•Headlight (2)
•Auxiliary light socket (3)
NOTE:
Remove the auxiliary light socket (together with
the bulb) without disconnecting the leads.
•Bulb (by pushing it in and turning it coun-
terclockwise)Cowling screws:
10 Nm (1.0 kgm)
7. Install:
•Headlight bulb (new)
•Headlight bulb holder (by turning it clock-
wise (b))
Do not touch the glass part of the headlight
bulb to keep it free from oil, otherwise the
transparency of the glass, the luminosity of
the bulb, and the bulb life will be adversely
affected. Thoroughly clean off any dirt and
fingerprints on the headlight bulb using a
cloth moistened with alcohol or thinner.
8. Install:
•Headlight bulb cover
9. Connect:
•Headlight coupler
10. Install:
•Upper side of the cowling (onto the meter
bracket)
•Headlight (adjust the headlight beam if
necessary)
11. Install:
•Cowling screws
CAUTION:
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Page 110 of 382
REPLACING THE TURN INDICATOR LIGHT BULB
3-56
INSP
ADJ
REPLACING THE TURN INDICATOR LIGHT
BULB
1. Remove:
•Lens screw (1)
•Lens (2)
•Bulb (3)
NOTE:
To remove the bulb press it into place and turn it
counterclockwise.
2. Install:
•New bulb
NOTE:
To install the bulb press it into place and turn it
clockwise.
•Lens
•Lens screw
Do not overtighten the screw, otherwise the
lens may break.
CAUTION: 4. Install:
•Bulb (new) (by pushing it in and turning it
clockwise)
•Bulb holder
•Upper side of the cowling (onto the meter
bracket)
•Headlight (adjust the headlight beam if
necessary)
5. Install:
•Cowling screws
Cowling screws:
10 Nm (1.0 kgm)
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Page 111 of 382
INSP
ADJREPLACING THE TAIL/
BRAKE LIGHT BULB
3-57
REPLACING THE TAIL/BRAKE LIGHT BULB
1. Remove:
•Screws (1) (lens fixing)
•Lens (2)
•Bulb (3)
NOTE:
To remove the bulb press it into place and turn it
counterclockwise (a).
2. Install:
•New bulb
NOTE:
To install the bulb press it into place and turn it
clockwise (b).
•Lens
•Screws (lens fixing)
Do not overtighten the screws, otherwise the
lens may break.
CAUTION:
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