PERIODIC MAINTENANCE AND MINOR REPAIR
6-10
6
ECA00021
CAUTION:@ Do not use any type of tools to re-
move or install the cap as the igni-
tion coil coupler may get damaged.
The spark plug cap may be difficult
to remove because a rubber seal on
the end of the cap is tightly fit into
the cylinder bore. To remove the
cap, simply twist it back and forth
while pulling it upward; when install-
ing the cap, twist it back and forth
while pushing it downward. @
EAU01610*
Engine oilOil level inspection
1. Place the motorcycle on a level
place and hold it in an upright posi-
tion. Warm up the engine for sev-
eral minutes.NOTE:@ Be sure the motorcycle is positioned
straight up when checking the oil level.
A slight tilt toward the side can result in
false readings. @
2. Stop the engine and remove the
dipstick.NOTE:@ Wait a few minutes until the oil level
settles before checking. @3. The oil level should be between
maximum and minimum marks on
the dipstick. If the level is low, fill
the engine with sufficient oil to
reach the specified level.
1. Dipstick
1. Maximum level mark
2. Minimum level mark
E_5eb_Periodic.fm Page 10 Thursday, November 18, 1999 4:06 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-27
6
EAU00731
Inspecting the brake fluid
levelInsufficient brake fluid may let air enter
the brake system, possibly causing the
brakes to become ineffective.
Before riding, check that the brake fluid
is above the minimum level and replen-
ish when necessary.
Observe these precautions:l
When checking the fluid level,
make sure the top of the master
cylinder is level by turning the han-
dlebars.
l
Use only the designated quality
brake fluid. Otherwise, the rubber
seals may deteriorate, causing
leakage and poor brake perfor-
mance.
l
Refill with the same type of brake
fluid. Mixing fluids may result in a
harmful chemical reaction and
lead to poor brake performance.
l
Be careful that water does not en-
ter the master cylinder when refill-
ing. Water will significantly lower
the boiling point of the fluid and
may result in vapor lock.
l
Brake fluid may deteriorate paint-
ed surfaces or plastic parts. Al-
ways clean up spilled fluid
immediately.
l
Have a Yamaha dealer check the
cause if the brake fluid level goes
down.
1. Minimum level mark
1. Minimum level mark
Recommended brake fluid: DOT 4
E_5eb_Periodic.fm Page 27 Thursday, November 18, 1999 4:06 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-29
6
EAU01251
Drive chain slack adjustment1. Loosen the axle nut.
2. Loosen the locknuts on each side.
To tighten the chain, turn the chain
adjusting bolts in direction
a. To
loosen the chain, turn the adjust-
ing bolts in direction
b and push
the wheel forward. Turn each ad-
justing bolt exactly the same
amount to maintain correct axle
alignment. There are marks on
each side of the swingarm. Use
these marks to align the rear
wheel.
EC000096
CAUTION:@ Too little chain slack will overload
the engine and other vital parts.
Keep the slack within the specified
limits. @3. After adjusting, tighten the lock-
nuts. Then tighten the axle nut to
the specified torque.
EAU03006
Drive chain lubricationThe chain consists of many parts which
work with each other. If the chain is not
maintained properly, it will wear out
quickly. Therefore, the chain must be
serviced regularly. This service is es-
pecially necessary when riding in dusty
areas. This motorcycle is equipped
with a sealed type chain. Steam clean-
ing, high-pressure washers, and sol-
vents can damage the drive chain, so
do not use these for cleaning it. Use
only kerosene to clean the drive chain.
Wipe it dry, and thoroughly lubricate it
with SAE 30 ~ 50W motor oil. Do not
use any other lubricants on the drive
chain. They may contain solvents that
could damage the sealed chain.
EC000097
CAUTION:@ Be sure to oil the chain after wash-
ing the motorcycle or riding in the
rain. @
1. Axle nut
2. Adjusting bolt
3. Locknut
4. Alignment marks
Tightening torque:
Axle nut:
150 Nm (15.0 m·kg)
E_5eb_Periodic.fm Page 29 Thursday, November 18, 1999 4:06 PM
PERIODIC MAINTENANCE AND MINOR REPAIR
6-33
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.
EAU01291
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.
EW000116
WARNING
@ 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.
@
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-36
6
EC000104
CAUTION:@ To prevent damage to the following:l
Headlight bulb
Avoid touching the glass part of
the bulb. Keep it free from oil;
otherwise, the transparency of
the glass, life of the bulb, and il-
luminous flux will be adversely
affected. If oil gets on the bulb,
thoroughly clean it with a cloth
moistened with alcohol or lac-
quer thinner.
l
Headlight lens
• Do not affix any type of tinted
film or stickers to the head-
light lens.
• Do not use headlight bulbs of
wattage higher than speci-
fied.
@5. Install the bulb holder cover and
reconnect the headlight connec-
tor.
If the headlight beam adjustment is
necessary, ask a Yamaha dealer to
make that adjustment.
EAU01823
Tail/brake light bulb
replacement1. Remove the passenger seat. (See
page 3-15 for seat removal and in-
stallation procedures.)
2. To remove the socket, turn it coun-
terclockwise.
3. To remove the defective bulb, turn
it counterclockwise.
4. Push a new bulb into the socket
and turn it clockwise.
5. Install the socket and turn it clock-
wise.
6. Install the passenger seat.
EAU01095
Turn signal light bulb
replacement1. Remove the screw and the lens.
2. Remove the defective bulb by
pushing it inward and turning it
counterclockwise.
3. Install a new bulb by pushing it in-
ward and turning it clockwise.
4. Install the lens and tighten the
screw.
1. Bulb socket
1. Screw
E_5eb_Periodic.fm Page 36 Thursday, November 18, 1999 4:06 PM
8-1
8
EAU01038
8-SPECIFICATIONSSpecifications01E
Model YZF-R6
Dimensions
Overall length 2,025 mm (except for N, S, SF)
2,075 mm (for N, S, SF)
Overall width 690 mm
Overall height 1,105 mm
Seat height 820 mm
Wheelbase 1,380 mm
Ground clearance 135 mm
Minimum turning radius 3,400 mm
Basic weight (with oil and full
fuel tank)
188 kg
Engine
Engine type Liquid-cooled 4-stroke, DOHC
Cylinder arrangement Forward-inclined parallel
4-cylinder
Displacement 600 cm
3
Bore ´ Stroke 65.5 ´ 44.5 mm
Compression ratio 12.4:1
Starting system Electric starter
Lubrication system Wet sumpEngine oil
Ty p e
Recommended engine oil
classification API Service SE, SF, SG type or
higher
Quantity
Periodic oil change 2.5 L
With oil filter replacement 2.7 L
Total amount 3.5 L
-20˚ -10˚ 0˚
10˚20˚ 30˚
40˚50˚C
SAE 10W/30
SAE 15W/40SAE 20W/40SAE 20W/50
SAE 10W/40
CAUTION:Be sure to use motor oils that do not contain anti-fric-
tion modifiers. Passenger car motor oils (often labeled
“Energy Conserving”) contain anti-friction additives
which will cause clutch and/or starter clutch slippage,
resulting in reduced component life and poor engine
performance.
E_5eb_Spec.fm Page 1 Thursday, November 18, 1999 4:08 PM
SPECIFICATIONS
8-3
8
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 290 kPa; 2.90 kg/cm2; 2.90 bar
High speed riding
Front 250 kPa; 2.50 kg/cm2; 2.50 bar
Rear 250 kPa; 2.50 kg/cm2; 2.50 bar
* Load is total weight of cargo, rider, passenger and accessories.
Wheels
Front
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
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 absorbers
Front Coil spring / oil damper
Rear Coil spring / gas-oil damper
Wheel travel
Front 130 mm
Rear 120 mm
Electrical
Ignition system C.D.I.
Charging system
Type A.C. magneto
Standard output 14 V, 320 W@ 5,000 r/min
Battery
Type GT12B-4
Voltage, capacity 12 V, 10 AH
Headlight typeQuartz bulb (halogen)
E_5eb_Spec.fm Page 3 Thursday, November 18, 1999 4:08 PM