2003 YAMAHA WR 250F compression ratio

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Page 80 of 860

YAMAHA WR 250F 2003  Notices Demploi (in French) GENERAL SPECIFICATIONS
2 - 1
SPEC
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: WR250FR (USA)
WR250F (EUROPE)
WR250F(R) (CDN, AUS, NZ, ZA)
Model code number: 5UM1 (USA)
5UM2 (EUR

Page 242 of 860

YAMAHA WR 250F 2003  Notices Demploi (in French) 3 - 51
INSP
ADJ
3. Remove:
Right radiator
Refer to “RADIATOR” section
in the CHAPTER 4.
Carburetor
Refer to “CARBURETOR”
section in the CHAPTER 4.
Spark plug 
Upper engine bracket
Cylinde

Page 384 of 860

YAMAHA WR 250F 2003  Notices Demploi (in French) 4 - 59
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