Page 57 of 91

PERIODIC MAINTENANCE AND MINOR REPAIR
6-15
6
EW000132
WARNING
@ After extensive tests, the tires men-
tioned below have been approved
by Yamaha Motor Co., Ltd. for this
model. No guarantee for handling
characteristics can be given if tire
combinations other than what is ap-
proved are used on this motorcycle.
The front and rear tires should be of
the same manufacture and design.
Always use the tire valves and valve
cores listed below. Be sure to install
the valve caps securely, as these
are important to prevent air pres-
sure leakage. @
CE-41E
CE-42EEAU01230
WheelsTo ensure maximum performance,
long service, and safe operation, note
the following:l
Always inspect the wheels before
a ride. Check for cracks, bends or
warpage of the wheels. If any ab-
normal condition exists in a wheel,
consult a Yamaha dealer. Do not
attempt even small repairs to the
wheel. If a wheel is deformed or
cracked, it must be replaced.
l
Tires and wheels should be bal-
anced whenever either one is
changed or replaced. Failure to
have a wheel balanced can result
in poor performance, adverse han-
dling characteristics and short-
ened tire life.
l
Ride at moderate speeds after
changing a tire since the tire sur-
face must first be broken in for it to
develop its optimal characteristics.
FRONT
Manufacturer Size Type
Dunlop 150/80-16 71H D404F
Type
Tire valve TR412
Valve core #9000A
REAR
Manufacturer Size Type
Dunlop 150/90B15M/C 74H D404
Type
Tire valve PVR59A
Valve core #9000
E_4YP_Periodic.fm Page 15 Wednesday, October 6, 1999 10:05 AM
Page 82 of 91
SPECIFICATIONS
8-2
8
Final gear oil
Type SAE80API “GL-4” Hypoid Gear
Oil
Quantity 0.2 L
Radiator
capacity (including all routes) 2.9 L
Air filterDry type element
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 18 L
Reserve amount 3.5 L
Carburetor
Type ´ quantity BDS28 ´ 4
Manufacturer MIKUNI
Spark plug
Manufacturer/Type 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 1.667
Secondary reduction system Shaft drive
Secondary reduction ratio 2.567Transmission type Constant mesh 5-speed
Operation Left foot operation
Gear ratio
1st 2.438
2nd 1.579
3rd 1.160
4th 0.906
5th 0.750
Chassis
Frame type Double cradle
Caster angle 30°
Trail 126 mm
Tires
Front
Type Tubeless
Size 150/80-16 71H
Manufacturer /
modelDunlop / D404F
Rear
Type Tubeless
Size 150/90B15M/C 74H
Manufacturer /
modelDunlop / D404
E_4YP_Spec.fm Page 2 Wednesday, October 6, 1999 10:06 AM
Page 83 of 91

SPECIFICATIONS
8-3
8
Maximum load* 203 kg
Air pressure (cold tire)
Up to 90 kg load*
Front 250 kPa (2.50 kg/cm
2, 2.50 bar)
Rear 250 kPa (2.50 kg/cm2, 2.50 bar)
90 kg load ~ maximum load*
Front 250 kPa (2.50 kg/cm2, 2.50 bar)
Rear 280 kPa (2.80 kg/cm2, 2.80 bar)
* Load is the total weight of cargo, rider, passenger and accesso-
ries.
Wheels
Front
Ty p e C a s t
Size 16 ´ MT3.50
Rear
Ty p e C a s t
Size 15M/C ´ MT4.00
Brakes
Front
Type Dual disc brake
Operation Right hand operation
Fluid DOT 4Rear
Type Single disc brake
Operation Right foot operation
Fluid DOT 4
Suspension
Fr o n t
Ty p e Te l e s c o p i c f o r k
Rear
Type Swingarm (link suspension)
Shock absorber
Front Coil-air spring / oil damper
Rear Coil spring / gas-oil damper
Wheel travel
Front 140 mm
Rear 95 mm
Electrical sysyem
Ignition system T.C.I. (digital)
Charging system
Type A.C. magneto
Standard output 14 V, 23 A @ 5,000 r/min
Battery
Type YTX20L-BS
Voltage, capacity 12 V, 18 AH
E_4YP_Spec.fm Page 3 Wednesday, October 6, 1999 10:06 AM