Yamaha YZ250F(D) Owner's Service Manual page 52

Yz series
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Item
PISTON PIN
Inspect
Replace
CYLINDER HEAD
Inspect and clean
CYLINDER
Inspect and clean
Replace
CLUTCH
Inspect and adjust
Replace
TRANSMISSION
Inspect
Replace bearing
SHIFT FORK, SHIFT CAM,
GUIDE BAR
Inspect
ROTOR NUT
Retighten
EXHAUST PIPE, SILENCER,
PROTECTOR
Inspect and retighten
Clean
Replace
Replace fiber
CRANK
Inspect and clean
CARBURETOR
Inspect, adjust and clean
SPARK PLUG
Inspect and clean
Replace
DRIVE CHAIN
Lubricate, slack, alignment
Replace
Every
Every
third
After
race
(about
break-
(about
in
2.5
7.5
hours)
hours)
3-2
MAINTENANCE INTERVALS
Every
fifth
As re-
(about
quired
12.5
hours)
Inspect carbon deposits and eliminate
them.
Change gasket.
Inspect score marks.
Inspect wear.
Inspect housing, friction plate, clutch
plate and spring.
Inspect wear.
* When the exhaust sound becomes
● *
louder or when a performance drop is
felt
Use chain lube.
Chain slack: 50–60 mm (2.0–2.4 in)
Remarks

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Yz250f b 2012Yz250f 20122013 yz250f2013 yz250fd

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