Yamaha WR426F(N) Owner's Service Manual page 227

Item
SHIFT FORK, SHIFT CAM, GUIDE BAR
Inspect
ROTOR NUT
Retighten
MUFFLER
Inspect and retighten
Clean
Replace
*SPARK ARRESTER
Clean
CRANK
Inspect and clean
CARBURETOR
Inspect, adjust and clean
SPARK PLUG
Inspect and clean
Replace
DRIVE CHAIN
Lubricate, slack, alignment
Replace
COOLING SYSTEM
Check coolant level and leakage
Check radiator cap operation
Replace coolant
Inspect hoses
OUTSIDE NUTS AND BOLTS
Retighten
AIR FILTER
Clean and lubricate
Replace
OIL STRAINER (frame)
Clean
FRAME
Clean and inspect
FUEL TANK, COCK
Clean and inspect
BRAKES
Adjust lever position and pedal height
Lubricate pivot point
Check brake disc surface
Check fluid level and leakage
Retighten brake disc bolts, caliper
bolts, master cylinder bolts and union
bolts
Replace pads
Replace brake fluid
MAINTENANCE INTERVALS
Every
third
After Every
or
break-in race
500 km 1,000 km
(300 mi)
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3 - 2
INSP
ADJ
Every
fifth
As re-
Remarks
or
quired
(600 mi)
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Inspect wear
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*Whichever comes first
(Every
six
months)
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When using a high-pres-
sure washer, make sure
that water does not enter
the accelerator pump.
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Use chain lube
Chain slack: 40 ~ 50 mm
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Every two years
Refer to "STARTING AND
BREAK-IN" section in the
CHAPTER 1.
Use foam air-filter oil
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Every one year
3
(1.6 ~ 2.0 in)