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
PERIODIC MAINTENANCE AND MINOR REPAIR
6-30
6
5. Engine overheating
EW000070
WARNING
@ Do not remove the radiator cap when the engine and radiator are hot. Scalding hot fluid and steam may be blown
out under pressure, which could cause serious injury. Open the radiator cap as follows. Wait until the engine has
cooled. Remove the radiator cap stopper by removing the screw. Place a thick rag like a towel over the radiator cap
and slowly rotate the cap counterclockwise to the detent. This procedure allows any residual pressure to escape.
When the hissing sound has stopped, press down on the cap while turning counterclockwise and remove it. @NOTE:@ If it is difficult to get the recommended coolant, tap water can be temporarily used, provided that it is changed to the recom-
mended coolant as soon as possible. @
Wait until the
engine has cooled.
Check the coolant level in the
reservoir tank and/or radiator.
Level is OK.Level is low, check the
cooling system for leakage.
No
leakage.Leakage.
Ask a Yamaha dealer to inspect
and repair the cooling system.Add coolant. (See NOTE.)
Restart the engine. If the engine overheats again, ask a
Yamaha dealer to inspect and repair the cooling system.
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