
DESCRIPTION
2-2
2
Right view11. Passenger footrest
12. Main switch (page 3-1)
13. Passenger seat
14. Helmet holders (page 3-11)
15. Rider seat (page 3-10)
16. Fuel tank (page 3-7)
17. Fuel tank cap (page 3-7)18. Headlight (page 6-27)
19. Front turn signal light (page 6-28)
20. Rear brake pedal (page 3-6)
21. Rider footrest
22. Rear shock absorber spring
preload adjusting nut (page 3-13)
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3
INSTRUMENT AND CONTROL FUNCTIONS
Main switch......................................................................................... 3-1
Indicator lights .................................................................................... 3-1
Speedometer...................................................................................... 3-3
Antitheft alarm (optional) .................................................................... 3-3
Handlebar switches ............................................................................ 3-4
Clutch lever ........................................................................................ 3-5
Shift pedal .......................................................................................... 3-6
Front brake lever................................................................................. 3-6
Rear brake pedal ................................................................................ 3-6
Fuel tank cap...................................................................................... 3-7
Fuel .................................................................................................... 3-7
Fuel cock ............................................................................................ 3-8
Starter (choke) knob........................................................................... 3-9
Steering lock ...................................................................................... 3-9
Rider seat ......................................................................................... 3-10
Helmet holders ................................................................................. 3-11
Adjusting front fork preload .............................................................. 3-12
Adjusting rear shock absorber preload ............................................ 3-13
Sidestand ......................................................................................... 3-15
Sidestand/clutch switch operation check.......................................... 3-15
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INSTRUMENT AND CONTROL FUNCTIONS
3-7
3
EAU02917
Fuel tank capTo remove
Slide the lock cover open, insert the
key and turn it 1/4 turn clockwise. The
lock will be released and the cap can
be removed.
To install
Make sure the arrow mark on the tank
cap is facing forward, then push the
tank cap into position. Turn the key
counterclockwise to the original posi-
tion and remove it. Close the lock cov-
er.
NOTE:@ This tank cap cannot be closed unless
the key is in the lock. The key cannot
be removed if the cap is not locked
properly. @
EW000023
WARNING
@ Be sure the cap is properly installed
and locked in place before riding the
motorcycle. @
EAU01183
FuelMake sure there is sufficient fuel in the
tank. Fill the fuel tank to the bottom of
the filler tube as shown in the illustra-
tion.
EW000130
WARNING
@ Do not overfill the fuel tank. Avoid
spilling fuel on the hot engine. Do
not fill the fuel tank above the bot-
tom of the filler tube or it may over-
flow when the fuel heats up later and
expands. @1. Filler tube
2. Fuel level
E_4YP_Functions.fm Page 7 Wednesday, October 6, 1999 10:03 AM

INSTRUMENT AND CONTROL FUNCTIONS
3-8
3
EAU00185
CAUTION:@ Always wipe off spilled fuel immedi-
ately with a dry and clean soft cloth.
Fuel may deteriorate painted surfac-
es or plastic parts. @
EAU00191
NOTE:@ If knocking or pinging occurs, use a dif-
ferent brand of gasoline or higher oc-
tane grade. @
EAU02969
Fuel cockThe fuel cock supplies fuel from the
tank to the carburetors while filtering it
also.
The fuel cock has three positions,
which should be set as shown in the il-
lustrations.
OFF
With the fuel cock in this position, fuel
will not flow. Always set the fuel cock to
this position when the engine is not
running.ON
With the fuel cock in this position, fuel
flows to the carburetors. Set the fuel
cock to this position when starting the
engine and while riding. Recommended fuel:
Regular unleaded gasoline with a
research octane number of 91 or
higher.
Fuel tank capacity:
Total:
18 L
Reserve:
3.5 L1. Pointed end positioned over “OFF”OFF: closed position
1. Pointed end positioned over “ON”ON: normal position
E_4YP_Functions.fm Page 8 Wednesday, October 6, 1999 10:03 AM

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

10-INDEXAAdjusting front fork preload .................... 3-12
Adjusting rear shock absorber
preload ................................................ 3-13
Antitheft alarm (optional) ..........................3-3BBattery ................................................... 6-23
Brake and clutch lever lubrication........... 6-22
Brake and shift pedal lubrication ............ 6-21
Brake fluid replacement ......................... 6-21
Brake light switch adjustment ................. 6-18CCarburetor adjustment ........................... 6-11
Care.........................................................7-1
Checking the front and
rear brake pads ................................... 6-19
Clutch lever ..............................................3-5
Clutch lever free play adjustment ........... 6-16
Controls/Instruments ................................2-3
Coolant .................................................. 6-10DDimmer switch .........................................3-4EEngine break-in........................................5-5
Engine oil .................................................6-7
Engine overheat indicator light .................3-2
Engine stop switch ...................................3-5FFinal gear oil .......................................... 6-10
Front brake lever ......................................3-6
Front brake lever free play
adjustment .......................................... 6-17
Front fork inspection .............................. 6-23
Fuel ......................................................... 3-7
Fuel cock ................................................. 3-8
Fuel level indicator light ........................... 3-1
Fuel tank cap ........................................... 3-7
Fuse replacement.................................. 6-25GGive safety the right of way ..................... 1-1HHandlebar switches ................................. 3-4
Dimmer switch ................................... 3-4
Engine stop switch ............................. 3-5
Horn switch ........................................ 3-4
Lights switch ...................................... 3-5
Pass switch ........................................ 3-4
Start switch ........................................ 3-5
Turn signal switch .............................. 3-4
Headlight bulb replacement ................... 6-27
Helmet holders ...................................... 3-11
High beam indicator light ......................... 3-1
Horn switch ............................................. 3-4IIdentification number records................... 9-1
Idle speed adjustment ........................... 6-11
Indicator lights ......................................... 3-1
Engine overheat indicator light ........... 3-2
Fuel level indicator light ...................... 3-1
High beam indicator light .................... 3-1
Neutral indicator light.......................... 3-1
Oil level indicator light .........................3-2
Overdrive / Engine trouble
indicator light....................................3-2
Turn indicator light ..............................3-2
Inspecting the brake fluid level ...............6-19
KKey identification number .........................9-1LLeft view...................................................2-1
Lights switch ............................................3-5MMain switch ..............................................3-1
Model label ..............................................9-2NNeutral indicator light ...............................3-1OOil level indicator light ..............................3-2
Overdrive / Engine trouble indicator
light ........................................................3-2PParking.....................................................5-6
Pass switch ..............................................3-4
Periodic maintenance and lubrication .......6-3
Pre-operation check list ............................4-1RRear brake pedal .....................................3-6
Rear brake pedal height adjustment.......6-17
Rider seat ..............................................3-10
Right view ................................................2-2
E_4YPIX.fm Page 1 Wednesday, October 6, 1999 10:07 AM