width YAMAHA YZ250F 2002 Owners Manual

YAMAHA YZ250F 2002 Owners Manual YZ250F 2002 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/53961/w960_53961-0.png YAMAHA YZ250F 2002 Owners Manual

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YAMAHA YZ250F 2002  Owners Manual SPEC
 
2 - 1 
GENERAL SPECIFICATIONS 
EC200000 
SPECIFICATIONS 
EC211000 
GENERAL SPECIFICATIONS 
Model name: YZ250FP (USA)
YZ250F (EUROPE)
YZ250F(P) (CDN, AUS, NZ, ZA)
Model code number: 5SG1 (USA)
5

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YAMAHA YZ250F 2002  Owners Manual SPEC
 
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MAINTENANCE SPECIFICATIONS 
Timing chain:
Timing chain type/No. of links 92RH2010-114M/114 ----
Timing chain adjustment method Automatic ----
Valve, valve seat, valve guide:
Valve cleara

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YAMAHA YZ250F 2002  Owners Manual SPEC
 
2 - 6 
MAINTENANCE SPECIFICATIONS 
Stem runout limit ---- 0.01 mm 
(0.0004 in)
Valve seat width IN 0.9 ~ 1.1 mm 
(0.0354 ~ 0.0433 in)1.6 mm 
(0.0630 in)
EX 0.9 ~ 1.1 mm 
(0.0354 ~ 0.0433 in)1.6

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YAMAHA YZ250F 2002  Owners Manual SPEC
 
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MAINTENANCE SPECIFICATIONS 
Piston pin bore inside diameter16.002 ~ 16.013 mm 
(0.6300 ~ 0.6304 in)16.043 mm 
(0.6316 in)
Piston pin outside diameter15.991 ~ 16.000 mm 
(0.6296 ~ 0.6299

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YAMAHA YZ250F 2002  Owners Manual SPEC
 
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MAINTENANCE SPECIFICATIONS 
Lubrication system:
Oil filter type Wire mesh type ----
Oil pump type Trochoid type ----
Tip clearance 0.12 mm or less 
(0.0047 in or less)0.20 mm 
(0.008 in)

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YAMAHA YZ250F 2002  Owners Manual 4 - 24
ENGCAMSHAFTS
4. Measure:
Camshaft-to-cap clearance 
Out of specification → Measure bearing
diameter (camshaft). 
Camshaft-to-cap clearance:
0.020 ~ 0.054 mm 
(0.0008 ~ 0.0021 in)
<Limit>: 0.

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YAMAHA YZ250F 2002  Owners Manual  
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ENG
 
VALVES AND VALVE SPRINGS 
REMOVAL POINTS
Valve lifter and valve cotter 
1. Remove:  
 
Valve lifter  
1 
  
 
Pad 2 
NOTE:
Identify each lifter 1 and pad 2 position very
carefully so

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YAMAHA YZ250F 2002  Owners Manual 4 - 37
ENGVALVES AND VALVE SPRINGS
5. Measure:
Runout (valve stem)
Out of specification → Replace.
NOTE:
When installing a new valve always replace
the guide.
If the valve is removed or replaced

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YAMAHA YZ250F 2002  Owners Manual 4 - 38
ENGVALVES AND VALVE SPRINGS
9. Lap:
Valve face
Valve seat
NOTE:
After refacing the valve seat or replacing the
valve and valve guide, the valve seat and
valve face should be lapped.
Lapping s

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YAMAHA YZ250F 2002  Owners Manual 4 - 58
ENG
OIL FILTER ELEMENT, WATER PUMP AND RIGHT
CRANKCASE COVER
REMOVAL POINTS
Impeller shaft
1. Remove:
Impeller 1 
Washer 2 
Impeller shaft 3 
NOTE:
Hold the impeller shaft on its width acros
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