Page 75 of 103
PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6
EAU01144
Wheel bearingsIf there is play in the front or rear wheel
hub or if the wheel does not turn
smoothly, have a Yamaha dealer in-
spect the wheel bearings.
EAU00800
BatteryThis motorcycle is equipped with a
sealed-type battery. Therefore it is not
necessary to check the electrolyte or fill
the battery with distilled water.l
If the battery seems to have dis-
charged, consult a Yamaha deal-
er.
l
If the motorcycle is equipped with
optional electrical accessories, the
battery tends to discharge more
quickly, so be sure to recharge it
periodically.
EC000101
CAUTION:@ Never try to remove the sealing caps
of the battery cells. The battery will
be damaged. @
EW000116
WA R N I N G
@ Battery electrolyte is poisonous and
dangerous, causing severe burns,
etc. It contains sulfuric acid. Avoid
contact with skin, eyes or clothing.
ANTIDOTE:l
EXTERNAL: Flush with water.
l
INTERNAL: Drink large quanti-
ties of water or milk. Follow with
milk of magnesia, beaten egg,
or vegetable oil. Call a physi-
cian immediately.
l
EYES: Flush with water for
15 minutes and get prompt
medical attention.
Batteries produce explosive gases.
Keep sparks, flame, cigarettes etc.,
away. Ventilate when charging or
using in an enclosed space. Always
shield your eyes when working near
batteries.
KEEP OUT OF REACH OF CHIL-
DREN.
@
E_4sv_Periodic.fm Page 27 Tuesday, August 31, 1999 3:45 PM
Page 94 of 103
SPECIFICATIONS
8-2
8
Fuel
Type Regular unleaded gasoline
Fuel tank capacity 20 L
Reserve amount 4.5 L
Carburetor
Ty p e ´ quantity BDSR38 ´ 4
Manufacturer MIKUNI
Spark plug
Manufacturer/type NGK / DR8EA or
DENSO / X24ESR-U
Gap 0.6 ~ 0.7 mm
Clutch type
Wet, multiple-disc
Transmission
Primary reduction system Spur gear
Primary reduction ratio 1.659
Secondary reduction system Chain drive
Secondary reduction ratio 2.706 (except for D, S, SF)
2.765 (for D, S, SF)
Transmission type Constant mesh 5-speed
Operation Left foot operation
Gear ratio
1st 2.571
2nd 1.778
3rd 1.381
4th 1.1745th 1.037
Chassis
Frame type Diamond
Caster angle 24°
Tr a i l 9 7 m m
Tire
Front
Ty p e Tu b e l e s s
Size 120/70 ZR17
Manufacturer/
model Bridgestone / BT50F
Dunlop / D204FN
Michelin / MACADAM 90XM
Metzeler / MEZ1
Metzeler / MEZ2
Rear
Ty p e Tu b e l e s s
Size 180/55 ZR17
Manufacturer/
model Bridgestone / BT50R
Dunlop / D204M
Michelin / MACADAM 90XM
Metzeler / MEZ1
Metzeler / MEZ2
E_4sv_Spec.fm Page 2 Tuesday, August 31, 1999 3:47 PM
Page 95 of 103
SPECIFICATIONS
8-3
8
Maximum load* 196 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 290 kPa (2.90 kg/cm2, 2.90 bar)
Rear 290 kPa (2.90 kg/cm2, 2.90 bar)
High speed riding
Front 290 kPa (2.90 kg/cm2, 2.90 bar)
Rear 290 kPa (2.90 kg/cm2, 2.90 bar)
* Load is total weight of cargo, rider, passenger and accessories.
Wheels
Fr on t
Ty p e C a s t
Size 17 ´ MT 3.50
Rear
Ty p e C a s t
Size 17 ´ MT 5.50
Brakes
Fr on t
Type Dual disc brake
Operation Right hand operation
Fluid DOT 4Rear
Type Single disc brake
Operation Right foot operation
Fluid DOT 4
Suspension
Fr on t
Ty p e Te l e s c o p i c f o r k
Inner tube outer
diameter 48 mm
Rear
Type Swingarm (link suspension)
Shock absorbers
Front Coil spring/oil damper
Rear Coil spring/gas-oil damper
Wheel travel
Front 120 mm
Rear 120 mm
Electrical systems
Ignition system T.C.I. (digital)
Charging system
Type A.C. generator
Standard output 12 V, 28 A @ 5,000 r/min
Battery
Type YTX14-BS
Voltage, capacity 12 V, 12 AH
E_4sv_Spec.fm Page 3 Tuesday, August 31, 1999 3:47 PM