Page 45 of 91

PERIODIC MAINTENANCE AND MINOR REPAIR
6-3
6
EAU00473
PERIODIC MAINTENANCE AND LUBRICATION
CP-01ENO. 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 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 42,000 km or 42 months
(whichever comes first)
5 Air filter• Clean or replace if necessary.ÖÖ
6*Clutch• Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)
• Correct accordingly. ÖÖÖ
7*Front brake• Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)
• Correct accordingly.
• Replace brake pads if necessary.ÖÖÖ
8*Rear brake• Check operation, fluid level and vehicle for fluid leakage.
(See NOTE on page 6-5.)
• Correct accordingly.
• Replace brake pads if necessary.ÖÖÖ
9*Wheels• Check balance, runout and for damage.
• Rebalance or replace if necessary.ÖÖ
* Since these items require special tools, data and technical skills, they should be serviced by a Yamaha dealer.
E_4YP_Periodic.fm Page 3 Wednesday, October 6, 1999 10:05 AM
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-5
6
EAU02971
NOTE:@ l
The air filter needs more frequent service if you are riding in unusually wet or dusty areas.
l
Hydraulic brake and clutch systems
• After disassembling the master cylinder, caliper or clutch release cylinder, always replace the brake fluid. Check the
brake fluid level of the master cylinder and clutch release cylinder regularly and fill as required.
• Replace the oil seals on the inner parts of the master cylinder, caliper and clutch release cylinder every two years.
• Replace the brake and clutch hoses every four years or if cracked or damaged.
@20
*Carburetors• Check engine idling speed, synchronization and starter operation.
• Adjust if necessary.ÖÖÖ
21 Engine oil• Check oil level and vehicle for oil leakage.
• Correct if necessary.
• Change. (Warm engine before draining.)ÖÖÖ
22 Engine oil filter cartridge•Replace.ÖÖ
23*Cooling system• Check coolant level and vehicle for coolant leakage.
• Correct if necessary.
• Change coolant every 24,000 km or 24 months (whichever comes
first).ÖÖ
24 Final gear oil• Check oil level and vehicle for oil leakage.
• Change oil at initial 1,000 km and thereafter every 24,000 km
or 24 months (whichever comes first).ÖÖÖ 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)
* Since these items require special tools, data and technical skills, they should be serviced by a Yamaha dealer.
E_4YP_Periodic.fm Page 5 Wednesday, October 6, 1999 10:05 AM
Page 50 of 91

PERIODIC MAINTENANCE AND MINOR REPAIR
6-8
6 2. Stop the engine and wait for a few
minutes. Check the oil level
through the level window 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 recommended
oil to reach the specified level.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.
4. Remove the oil filter by using an oil
filter wrench.
NOTE:@ An oil filter wrench is available at a
nearby Yamaha dealer. @
5. Reinstall the drain bolt and tighten
it to the specified torque.
6. Apply a light coat of engine oil to
the O-ring of new oil filter.NOTE:@ Make sure the O-ring is seated proper-
ly. @
1. Engine oil filler cap
1. Engine oil drain boltTightening torque:
Drain bolt:
43 Nm (4.3 m·kg)
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PERIODIC MAINTENANCE AND MINOR REPAIR
6-9
67. 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. @
8. Fill the engine with sufficient rec-
ommended oil. Install the oil filler
cap and tighten it.
EC000066
CAUTION:@ l
Do not put in any chemical addi-
tives. Engine oil also lubricates
the clutch and additives could
cause clutch slippage.
l
Be sure no foreign material en-
ters the crankcase.
@
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. @
1. Oil filterTightening torque:
Oil filter:
17 Nm (1.7 m·kg)
Recommended oil:
See page 8-1.
Oil quantity:
Total amount:
4.3 L
Periodic oil change:
3.5 L
With oil filter replacement:
3.7 L
E_4YP_Periodic.fm Page 9 Wednesday, October 6, 1999 10:05 AM
Page 82 of 91
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