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To install
1. Place in the original position and
install the screws.
2. Install the seat.
a. Spark plug gap
EAU01880
Spark plug inspection
The spark plug is an important engine
component and should be inspected
periodically, preferably by a Yamaha
dealer. The condition of the spark plug
can indicate the condition of the en-
gine.
Normally, all spark plugs from the
same engine should have the same
color on the white insulator around the
center electrode. The ideal color at this
point is a medium-to-light tan color for a
motorcycle that is being ridden normal-
ly. If one spark plug shows a distinctly
different color, there could be some-
thing wrong with the engine.Do not attempt to diagnose such prob-
lems yourself. Instead, take the motor-
cycle to a Yamaha dealer. The spark
plugs should be periodically removed
and inspected because heat and de-
posits will cause any spark plug to
slowly break down and erode. If elec-
trode erosion becomes excessive, or if
carbon and other deposits are exces-
sive, the spark plug should be replaced
with the specified plug.
Before installing any spark plug, mea-
sure the electrode gap with a wire
thickness gauge and adjust it to speci-
fication.Specified spark plug:
CR8E (NGK) or
U24ESR-N(DENSO)
Spark plug gap:
0.7 ~ 0.8 mm
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When installing a spark plug, the gas-
ket surface should always be cleaned
and a new gasket used. Any grime
should be wiped off from the threads
and the spark plug tightened to the
specified torque.
NOTE:
If a torque wrench is not available when
installing a spark plug, a good estimate
of the correct torque is 1/4 to 1/2 turn
past finger tight. The spark plug should
be tightened to the specified torque as
soon as possible.Tightening torque:
Spark plug:
12.5 Nm (1.25 mákg)
1. Level window
2. Maximum level mark
3. Minimum level mark
EAU02938
Engine oil
Oil level inspection
1. Place the motorcycle on the cen-
terstand. Warm up the engine for
several 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.
1. Engine oil filler cap
2. With the engine stopped, check
the oil level through the level win-
dow located at the lower part of
the right side crankcase cover.
NOTE:
Wait a few minutes until the oil level
settles before checking.
3. The oil level should be between
the maximum and minimum
marks. If the level is low, fill the en-
gine with sufficient oil to reach the
specified level.
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1. Engine oil drain bolt
Engine oil and oil filter cartridge re-
placement
1. Warm up the engine for several
minutes.
2. Stop the engine. Place an oil pan
under the engine and remove the
oil filler cap.
3. Remove the drain bolt and drain
the oil.
1. Oil filter cartridge
2. Oil filter wrench
4. Remove the oil filter by using an oil
filter wrench.
NOTE:
An oil filter wrench is available at a
nearby Yamaha dealer.
5. Install the drain bolt and tighten it
to the specified torque.
Tightening torque:
Drain bolt:
43 Nm (4.3 mákg)
1. O-ring
6. Apply a light coat of engine oil to
the O-ring of the new oil filter.
NOTE:
Make sure the O-ring is seated proper-
ly.
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1. Torque wrench
7. Install the new oil filter and tighten
it to the specified torque with an oil
filter wrench.
NOTE:
When installing the oil filter, tighten it to
the proper torque by using a torque
wrench.
Tightening torque:
Oil filter:
17 Nm (1.7 mákg)
8. Fill the engine with sufficient oil to
reach the specified level. Install
the oil filler cap and tighten it.
EC000066
CAUTION:
lDo not put in any chemical addi-
tives. Engine oil also lubricates
the clutch and additives could
cause clutch slippage.
lBe sure no foreign material en-
ters the crankcase. Recommended oil:
See page 8-1.
Oil quantity:
Total amount:
3.1 L
Periodic oil change:
2.3 L
With oil filter replacement:
2.6 L
9. Start the engine and warm it up for
several minutes. While warming
up, check for oil leakage. If oil
leakage is found, stop the engine
immediately and check for the
cause.
NOTE:
After the engine is started, the oil level
indicator light should go off if the oil is at
the specified level.
EC000067
CAUTION:
If the indicator light flickers or re-
mains on, immediately stop the en-
gine and consult with a Yamaha
dealer.
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1. Screw (´ 4)
5. Remove the air filter case cover by
removing the screws.
6. Pull out the air filter.7. Tap the air filter lightly to remove
most of the dust and dirt. Blow out
the remaining dirt with com-
pressed air as shown. If the air fil-
ter is damaged, replace it.
8. Reassemble by reversing the re-
moval procedure.
EC000082
CAUTION:
lMake sure the air filter is prop-
erly seated in the air filter case.
lThe engine should never be run
without the air filter installed.
Excessive piston and/or cylin-
der wear may result.
EAU00630
Carburetor adjustment
The carburetors are important parts of
the engine and require very sophisti-
cated adjustment. Most adjustments
should be left to a Yamaha dealer who
has the professional knowledge and
experience to do so. However, the idle
speed may be adjusted by the owner
as part of routine maintenance.
EC000095
CAUTION:
The carburetors were set at the
Yamaha factory after many tests. If
they are changed, poor engine per-
formance and damage may result.
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a. Pedal height
EAU00712
Rear brake pedal height
adjustment
The top of the brake pedal should be
positioned 40 mm below the top of the
footrest. If not, ask a Yamaha dealer to
adjust it.
EW000109
A soft or spongy feeling in the brake
pedal can indicate the presence of
air in the brake system. This air
must be removed by bleeding the
brake system before the motorcycle
is operated. Air in the system will
cause greatly diminished braking
capability and can result in loss of
control and an accident. Have a
Yamaha dealer inspect and bleed
the system if necessary.
1. Brake light switch
2. Adjusting nut
EAU00713
Brake light switch adjustment
The rear brake light switch is activated
by the brake pedal and is properly ad-
justed when the brake light comes on
just before braking takes effect. To ad-
just the rear brake light switch, hold the
switch body so it does not rotate while
turning the adjusting nut. Turn the ad-
justing nut in direction a
to make the
brake light come on earlier. Turn the
adjusting nut in direction b
to make the
brake light come on later.
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Battery storage
When the motorcycle is not used for a
month or longer, remove the battery,
fully charge it and store it in a cool, dry
place.
EC000102
CAUTION:
lCompletely recharge the bat-
tery before storing. Storing a
discharged battery can cause
permanent battery damage.
lUse a battery charger designed
for a sealed-type (MF) battery.
Using a conventional battery
charger will cause battery dam-
age. If you do not have a sealed-
type battery charger, contact
your Yamaha dealer.
lAlways make sure the connec-
tions are correct when reinstall-
ing the battery.
1. Fuse box
EAU01470
Fuse replacement
The fuse box is located under the seat.
(See page 3-14 for seat removal and
installation procedures.)
If any fuse is blown, turn off the main
switch and the switch of the circuit in
question. Install a new fuse of specified
amperage. Turn on the switches and
see if the electrical device operates. If
the fuse immediately blows again, con-
sult a Yamaha dealer.
1. Main fuse
2. Ignition fuse
3. Signaling system fuse
4. Headlight fuse
5. Hazard light fuse
6. Spare fuse (´ 3)
EC000103
CAUTION:
Do not use fuses of higher amper-
age rating than those recommend-
ed. Substitution of a fuse of
improper rating can cause extensive
electrical system damage and pos-
sibly a fire.
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Specified fuses:
Main fuse: 30 A
Ignition fuse: 10 A
Signaling system fuse: 15 A
Headlight fuse: 15 A
Hazard light fuse: 10 A
1. Connector
2. Bulb holder cover
EAU00829
Headlight bulb replacement
(for XJ600S)
This motorcycle is equipped with a
quartz bulb headlight.
If a headlight bulb burns out, replace it
as follows:
1. Remove the headlight connector
and the bulb holder cover.
1. Bulb holder
2. Unhook the bulb holder and re-
move the defective bulb.
EW000119
Keep flammable products and your
hands away from a bulb while it is
on, as it is hot. Do not touch a bulb
until it cools down.
