Page 33 of 102

INSTRUMENT AND CONTROL FUNCTIONS
3-19
3
EAU39450
Fuel tank breather/overflow
hose Before operating the motorcycle:
Check the fuel tank breather/over-
flow hose connection.
Check the fuel tank breather/over-
flow hose for cracks or damage,
and replace it if damaged.
Make sure that the end of the fuel
tank breather/overflow hose is not
blocked, and clean it if necessary.
EAU13441
Catalytic converter This vehicle is equipped with catalytic
converters in the exhaust system.
WARNING
EWA10860
The exhaust system is hot after op-
eration. Make sure that the exhaust
system has cooled down before do-ing any maintenance work.CAUTION:
ECA10700
The following precautions must be
observed to prevent a fire hazard or
other damages.
Use only unleaded gasoline.
The use of leaded gasoline will
cause unrepairable damage to
the catalytic converter.
Never park the vehicle near pos-
sible fire hazards such as grass
or other materials that easily
burn.
Do not allow the engine to idletoo long.
EAU39491
Seats Passenger seat
To remove the passenger seat1. Insert the key into the seat lock,
and then turn it counterclockwise.
2. Lift the front of the passenger seat
and pull it forward.
To install the passenger seat1. Insert the projections on the rear of
the passenger seat into the seat
holders as shown, and then push
the front of the seat down to lock it
in place.
1. Fuel tank breather/overflow hose
1. Passenger seat lock
2. Unlock.
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Page 34 of 102
INSTRUMENT AND CONTROL FUNCTIONS
3-20
3
2. Remove the key.
Rider seat
To remove the rider seat
1. Remove the passenger seat.
2. Push the rider seat lock lever, lo-
cated under the back of the rider
seat, to the left as shown, and then
pull the seat off.To install the rider seat
1. Insert the projection on the front of
the rider seat into the seat holder
as shown, and then push the rear
of the seat down to lock it in place.2. Install the passenger seat.
NOTE:
Make sure that the seats are prop-
erly secured before riding.
The rider seat height can be ad-
justed to change the riding posi-tion. (See page 3-21.)
1. Projection
2. Seat holder
1. Rider seat lock lever
2. Rider seat
1. Projection
2. Seat holder
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Page 36 of 102

INSTRUMENT AND CONTROL FUNCTIONS
3-22
36. Align the projection on the bottom
of the rider seat with the “H” posi-
tion slot, and then push the rear of
the seat down to lock it in place as
shown.
7. Install the passenger seat.
To change the rider seat height to
the low position
1. Remove the rider seat. (See page
3-19.)
2. Remove the rider seat height posi-
tion adjuster by pulling it upward.
3. Move the rider seat holder cover to
the upper position.
4. Install the rider seat height position
adjuster so that the “L” mark is
aligned with the match mark.5. Insert the projection on the front of
the rider seat into seat holder A as
shown.6. Align the projection on the bottom
of the rider seat with the “L” posi-
tion slot, and then push the rear of
the seat down to lock it in place as
shown.
7. Install the passenger seat.
NOTE:
Make sure that the seats are properlysecured before riding.
1.“H” position slot
1. Rider seat height position adjuster
2.“L” mark
3. Match mark
1. Projection
2. Seat holder A (for low position)
3. Rider seat holder cover
1.“L” position slot
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Page 60 of 102
PERIODIC MAINTENANCE AND MINOR REPAIR
6-7
6
CAUTION:
ECA15420
Do not remove the headlight beamadjusting cable.To install the panel
1. Place the panel in the original posi-
tion, and then install the bolts and
quick fastener.
2. Install panels B and C.
EAU39591
Panel E
To remove the panel1. Remove the seats. (See page
3-19.)
2. Remove the bolts and the quick
fastener screws, and then take the
panel off.To install the panel
1. Place the panel in the original posi-
tion, and then install the bolts and
the quick fastener screws.
2. Install the seats.
1. Panel D
2. Bolt
3. Quick fastener
1. Headlight beam adjusting cable
1. Panel D
1. Panel E
2. Bolt
3. Quick fastener screw
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Page 61 of 102

PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6
EAU39601
Panel F
To remove the panel1. Remove the seats. (See page
3-19.)
2. Remove the bolt and the quick fas-
tener screws, and then take the
panel off.
To install the panel1. Place the panel in the original posi-
tion, and then install the bolt and
the quick fastener screws.2. Install the seats.
EAU19642
Checking the spark plugs The spark plugs are important engine
components, which should be checked
periodically, preferably by a Yamaha
dealer. Since heat and deposits will
cause any spark plug to slowly erode,
they should be removed and checked
in accordance with the periodic mainte-
nance and lubrication chart. In addition,
the condition of the spark plugs can re-
veal the condition of the engine.
The porcelain insulator around the cen-
ter electrode of each spark plug should
be a medium-to-light tan (the ideal color
when the vehicle is ridden normally),
and all spark plugs installed in the en-
gine should have the same color. If any
spark plug shows a distinctly different
color, the engine could be operating im-
properly. Do not attempt to diagnose
such problems yourself. Instead, have
a Yamaha dealer check the vehicle.
If a spark plug shows signs of electrode
erosion and excessive carbon or other
deposits, it should be replaced.
1. Panel F
2. Bolt
3. Quick fastener screw
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