INSTRUMENT AND CONTROL FUNCTIONS
3-10
3
EAU00185
CAUTION:@ Immediately wipe off spilled fuel
with a clean, dry, soft cloth, since
fuel may deteriorate painted surfac-
es or plastic parts. @
EAU04202
ECA00102
CAUTION:_ Use only unleaded gasoline. The
use of leaded gasoline will cause se-
vere damage to internal engine
parts such as the valves and piston
rings, as well as to the exhaust sys-
tem. _
Your Yamaha engine has been de-
signed to use regular unleaded gaso-
line with a research octane number of
91 or higher. If knocking (or pinging)
occurs, use a gasoline of a different
brand or premium unleaded fuel. Use
of unleaded fuel will extend spark plug
life and reduce maintenance costs.
EAU02955
Fuel tank breather hose Before operating the motorcycle:
Check the fuel tank breather hose
connection.
Check the fuel tank breather hose
for cracks or damage, and replace
it if damaged.
Make sure that the end of the fuel
tank breather hose is not blocked,
and clean it if necessary. Recommended fuel:
REGULAR UNLEADED 
GASOLINE ONLY
Fuel tank capacity:
Total amount:
20 L
Reserve amount:
3.5 L
1. Fuel tank breather hose
E_5JA.book  Page 10  Saturday, August 18, 2001  3:52 PM 
SPECIFICATIONS
8-2
8
Transfer case oil
Type SAE80API “GL-4” Hypoid Gear 
Oil
Quantity 0.4 L
Air filterDry type element
Fuel
Type REGULAR UNLEADED 
GASOLINE ONLY
Fuel tank capacity 20 L
Reserve amount 3.5 L
Carburetor
Manufacturer MIKUNI
Model × quantity BSR40 × 1
Spark plug
Manufacturer/model NGK / DPR7EA-9 or 
DENSO / X22EPR-U9
Gap 0.8–0.9 mm
Clutch typeWet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction ratio 1.532
Secondary reduction system Belt
Secondary reduction ratio 2.320
Transmission type Constant mesh 5-speed
Operation Left footGear ratio
1st 2.438
2nd 1.579
3rd 1.160
4th 0.906
5th 0.750
Chassis
Frame type Double cradle
Caster angle 32°
Trail 142 mm
Tire
Front
Type Tube tire
Size 130/90-16 67H
130/90-16 M/C 67H
Manufacturer/model Dunlop / D404FL
Bridgestone / G703F
Rear
Type Tube tire
Size 150/80B-16 71H
150/80B-16 M/C 71H
Manufacturer/model Dunlop / D404
Bridgestone / G702
E_5JA.book  Page 2  Saturday, August 18, 2001  3:52 PM