width YAMAHA WR 250F 2006 Betriebsanleitungen (in German)

YAMAHA WR 250F 2006 Betriebsanleitungen (in German) WR 250F 2006 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52334/w960_52334-0.png YAMAHA WR 250F 2006 Betriebsanleitungen (in German)

Page 94 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) GENERAL SPECIFICATIONS
2 - 1
SPEC
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: WR250FV (USA, CDN, AUS, NZ)
WR250F (EUROPE, ZA)
Model code number: 5UMB (USA)
5UMC (EUROPE)
5UMD (

Page 98 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) MAINTENANCE SPECIFICATIONS
2 - 5
SPEC
Timing chain:
Timing chain type/No. of links 92RH2010-114M/114 ----
Timing chain adjustment method Automatic ----
Valve, valve seat, valve guide:
Valve clearance

Page 99 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) MAINTENANCE SPECIFICATIONS
2 - 6
SPEC
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 mm

Page 100 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) MAINTENANCE SPECIFICATIONS
2 - 7
SPEC
Piston pin bore inside diameter 16.002 ~ 16.013 mm 
(0.6300 ~ 0.6304 in)16.043 mm 
(0.6316 in)
Piston pin outside diameter 15.991 ~ 16.000 mm 
(0.6296 ~ 0.6299 in

Page 102 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) MAINTENANCE SPECIFICATIONS
2 - 9
SPEC
Lubrication system:
Oil filter type Paper type ----
Oil pump type Trochoid type ----
Tip clearance 0.12 mm or less 
(0.0047 in or less)0.20 mm 
(0.008 in)
Side cl

Page 410 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 69
ENGCAMSHAFTS
4. Measure:
Camshaft-to-cap clearance 
Out of specification 
→ Mea-
sure camshaft outside diame-
ter. 
5. Measure: 
Camshaft outside diameter 
a 
Out of specification 
→ 
Rep

Page 432 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 91
ENGVALVES 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 that they
can

Page 438 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 97
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

Page 440 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 99
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 st

Page 490 of 900

YAMAHA WR 250F 2006  Betriebsanleitungen (in German) 4 - 149
ENGOIL 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
acr
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