2007 YAMAHA WR 250F clock

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Page 399 of 912

YAMAHA WR 250F 2007  Owners Manual 4 - 40
TUNSETTING
Rear shock absorber
NOTE:If any of the following symptoms is experienced with the standard position as the base, make resetting by reference to
the adjustment procedure given in th

Page 412 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 5
ENGRADIATOR
EC456000HANDLING NOTE
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 ser

Page 460 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 53
ENGCAMSHAFTS
REMOVAL POINTS
Camshaft
1. Remove:
Timing mark accessing screw
1 
Crankshaft end accessing
screw 
2 
2. Align:
T.D.C. mark
With align mark.
Checking steps:
Turn the crankshaft

Page 466 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 59
ENGCAMSHAFTS
Decompression system
1. Check:
Decompression system
Checking steps:
Check that the decompression
mechanism cam 
1 moves
smoothly.
Check that the decompression
mechanism cam leve

Page 468 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 61
ENGCAMSHAFTS
Fit the timing chain 
3 onto both
camshaft sprockets and install
the camshafts on the cylinder
head.
NOTE:The camshafts should be installed
onto the cylinder head so that the
punc

Page 470 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 63
ENGCAMSHAFTS
3. Turn:
Crankshaft
Counterclockwise several
turns.
4. Check:
Rotor T.D.C. mark
Align with the crankcase align
mark.
Camshaft match marks
Align with the cylinder head
surface.
O

Page 582 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 175
ENGKICK SHAFT AND SHIFT SHAFT
REMOVAL POINTS
Kick shaft assembly
1. Remove:
Kick shaft assembly 
1 
NOTE:Unhook the torsion spring 
2 from
the hole 
a in the crankcase.
EC4C3101Shift guide an

Page 590 of 912

YAMAHA WR 250F 2007  Owners Manual 5 - 183
ENG
4. Install:
Kick shaft assembly 
1 
Washer 
2 
NOTE:Apply the molybdenum disulfide
grease on the contacting surfaces
of the kick shaft stopper 
a and
kick shaft ratchet wheel guide 
3.
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