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2. Push the throttle lever forward until it stops
and hold it in this position.
3. Check through each carburetor window to see
if the punch mark on the throttle valve is at the
specified position.
4. If not, loosen the locknut and turn the adjust-
ing nut until the specified position is obtained.5. Move the throttle lever a few times and re-
check the position.
6. Install the fuel tank, side cover, radiator cover
and air filter case cover.
7. Connect the fuel hoses.
8. Install the seat.
EBU24020
Adjusting the engine idling speed
The engine idling speed must be checked and, if
necessary, adjusted as follows at the intervals
specified in the periodic maintenance and lubrica-
1. Punch mark
2. Specified position: 0–1mm
1
2
1. Adjusting nut
2. Locknut
1
2
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Engine overheating
WARNING
EWB02290
Wait for the engine and radiator to cool before removing the radiator cap. You could be burned by
hot fluid and steam blown out under pressure. Always put a thick rag over the cap when opening.
Allow any remaining pressure to escape before completely removing the cap.
NOTE:
If coolant is not available, tap water can be temporarily used instead, provided that it is changed to the rec-
ommended coolant as soon as possible.
Wait until the
engine has cooled.
Check the coolant level in the
reservoir and radiator.
The coolant level
is OK.The coolant level is low.
Check the cooling system
for leakage.
Have a Yamaha dealer check
and repair the cooling system.Add coolant. (See NOTE.)
Start the engine. If the engine overheats again, have a
Yamaha dealer check and repair the cooling system.
There is
leakage.
There is
no leakage.
Page 132 of 140

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EBU25960
SPECIFICATIONS
EBU2597A
Dimensions:
Overall length:
1855 mm (73.0 in)
Overall width:
1100 mm (43.3 in)
Overall height:
1080 mm (42.5 in)
Seat height:
800 mm (31.5 in)
Wheelbase:
1280 mm (50.4 in)
Ground clearance:
135 mm (5.3 in)
Minimum turning radius:
3600 mm (142 in)
Weight:
With oil and fuel:
187.0 kg (412 lb)
Engine:
Engine type:
Liquid cooled 2-stroke
Cylinder arrangement:
Forward-inclined parallel 2-cylinder
Displacement:
347.0 cm
3
Bore
×
stroke:
64.0
×
54.0 mm (2.52
×
2.13 in)
Compression ratio:
6.50 :1
Starting system:
Kickstarter
Lubrication system:
Premix
Type:
YAMALUBE 2-R, Castrol R30, A545, A747
Engine oil quantity:
Mixing ratio:
YAMALUBE R 24:1
Transmission oil:
Type:
SAE10W30 type SE motor oil (EUR)
YAMALUBE 4 (10W30) or SAE10W30 type SE motor oil
(AUS)(NZL)
Quantity:
1.5 L (1.59 US qt) (1.32 Imp.qt)
Cooling system:
Coolant reservoir capacity (up to the maximum level mark):
0.28 L (0.30 US qt) (0.25 Imp.qt)
Radiator capacity (including all routes):
1.50 L (1.59 US qt) (1.32 Imp.qt)
Air filter:
Air filter element:
Wet element