2005 YAMAHA WR 250F weight

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Page 10 of 864

YAMAHA WR 250F 2005  Owners Manual EC050000
TO THE NEW OWNER
This manual will provide you with a
good basic understanding of fea-
tures, operation, and basic mainte-
nance and inspection items of this
machine. Please read this manual
c

Page 16 of 864

YAMAHA WR 250F 2005  Owners Manual ILLUSTRATED SYMBOLS 
(Refer to the illustration)
Illustrated symbols 1 to 7 are
designed as thumb tabs to indicate
the chapter’s number and content.
1General information
2Specifications
3Regular ins

Page 32 of 864

YAMAHA WR 250F 2005  Owners Manual 1 - 7
GEN
INFOIMPORTANT INFORMATION
EC133000GASKETS, OIL SEALS AND O-
RINGS
1. All gaskets, oil seals, and O-
rings should be replaced when
an engine is overhauled. All gas-
ket surfaces, oil seal lip

Page 80 of 864

YAMAHA WR 250F 2005  Owners Manual GENERAL SPECIFICATIONS
2 - 1
SPEC
EC200000
SPECIFICATIONS
EC211000
GENERAL SPECIFICATIONS
Model name: WR250FT (USA, CDN, AUS, NZ)
WR250F (EUROPE, ZA)
Model code number: 5UM8 (USA)
5UM9 (EUROPE)
5UMA (

Page 89 of 864

YAMAHA WR 250F 2005  Owners Manual MAINTENANCE SPECIFICATIONS
2 - 10
SPEC
Part to be tightened Thread size Q’tyTightening torque
Nm m·kg ft·lb
Spark plug M10S × 1.0 1 13 1.3 9.4
Camshaft cap M6 × 1.0 10 10 1.0 7.2
Cylinder head b

Page 98 of 864

YAMAHA WR 250F 2005  Owners Manual 2 - 19
GENERAL TORQUE SPECIFICATIONS/
DEFINITION OF UNITS
SPEC
EC220001
GENERAL TORQUE SPECIFICATIONS
This chart specifies torque for standard fasten-
ers with standard I.S.O. pitch threads. Torque
sp

Page 296 of 864

YAMAHA WR 250F 2005  Owners Manual 3 - 105
INSP
ADJ
LUBRIFICATION
Pour assurer le bon fonctionnement de
tous les organes, lubrifier la moto avant
la première utilisation, après le rodage,
ainsi qu’après chaque course.
1
Tous les c

Page 362 of 864

YAMAHA WR 250F 2005  Owners Manual 4 - 37
ENGCARBURETOR
Float height
1. Measure:
Float height 
a 
Out of specification 
→ Adjust.
Float height:
8.0 mm (0.31 in)
Measurement and adjustment 
steps:
Hold the carburetor in an upside
do
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