spark plugs replace YAMAHA XJ600N 2000 Owners Manual

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6-2
PERIODIC MAINTENANCE AND MINOR REPAIR
/Net/layout8/layout_G2/work/Imai_work/OM-PS/AA9156_XJ600SN-E6/English/E-6.frame
EAU00473
PERIODIC MAINTENANCE AND LUBRICATION
NO. ITEM CHECKS AND MAINTENANCE JOBSINITIAL
(1,000 km)EVERY
6,000 km
or
6 months
(whichever
comes first)12,000 km
or
12 months
(whichever
comes first)
1
*Fuel line ¥ Check fuel hoses and vacuum hose for cracks or damage.
¥ Replace if necessary.ÖÖ
2
*Fuel filter¥ Check condition.
¥ Replace if necessary.Ö
3 Spark plugs¥ Check condition.
¥ Clean, regap or replace if necessary.ÖÖÖ
4
*Valves¥ Check valve clearance.
¥ Adjust if necessary.Every 24,000 km or 24 months
(whichever comes first)
5 Air filter¥ Clean or replace if necessary.ÖÖ
6Clutch¥ Check operation.
¥ Adjust or replace cable.ÖÖÖ
7
*Front brake¥ Check operation, fluid level and vehicle for fluid leakage. (See NOTE
on page 6-4.)
¥ Correct accordingly.
¥ Replace brake pads if necessary.ÖÖÖ
8
*Rear brake¥ Check operation, fluid level and vehicle for fluid leakage. (See NOTE
on page 6-4.)
¥ Correct accordingly.
¥ Replace brake pads if necessary.ÖÖÖ
9
*Wheels¥ Check balance, runout and for damage.
¥ Rebalance or replace if necessary.ÖÖ
10
*Tires¥ Check tread depth and for damage.
¥ Replace if necessary.
¥ Check air pressure.
¥ Correct if necessary.ÖÖ

R
6-6
PERIODIC MAINTENANCE AND MINOR REPAIR
/Net/layout8/layout_G2/work/Imai_work/OM-PS/AA9156_XJ600SN-E6/English/E-6.frame
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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PERIODIC MAINTENANCE AND MINOR REPAIR
/Net/layout8/layout_G2/work/Imai_work/OM-PS/AA9156_XJ600SN-E6/English/E-6.frame
EAU01297
Troubleshooting chart
EW000125
Never check the fuel system while smoking or in the vicinity of an open flame.
Check if there is fuel
in the fuel tank.
1. FuelEnough fuel.
No fuel.Go to compression check.
Supply fuel.
Use the electric starter.
2. CompressionThere is compression.
No compression.Go to ignition check.
Ask a Yamaha dealer to
inspect.
Remove spark
plugs and
check electrodes.
3. IgnitionWet.
Dry.Wipe clean with dry cloth and correct
spark gap or replace spark plugs.
Ask a Yamaha dealer to inspect.
Engine doesnÕt start, go to battery
check.
Open throttle half-way and start
the engine.
Use the electric starter.
4. BatteryEngine turns over
quickly.
Engine turns over
slowly.Battery good.
Check connections or
recharge.
Engine doesnÕt start, ask a Yamaha
dealer to inspect.
Engine doesnÕt start, go to compression check.