lock YAMAHA WR 250F 2007 Manuale duso (in Italian)

YAMAHA WR 250F 2007 Manuale duso (in Italian) WR 250F 2007 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52333/w960_52333-0.png YAMAHA WR 250F 2007 Manuale duso (in Italian)

Page 16 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 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 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 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 60 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 1 - 35
GEN
INFOMULTI-FUNCTION DISPLAY
MULTI-FUNCTION 
DISPLAY
WARNING
Be sure to stop the machine
before making any setting
changes to the multi-function dis-
play.
The multi-function display is
equip

Page 72 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 1 - 47
GEN
INFO
MULTI-FUNCTION DISPLAY
FUNCTION DIAGRAM
NOTE:The following diagram illustrates the multi-function display regarding the direction and operation condition involved in each
of its functi

Page 90 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 1 - 65
GEN
INFO
EC1B0000
CLEANING AND 
STORAGE
EC1B1000CLEANING
Frequent cleaning of your machine
will enhance its appearance, main-
tain good overall performance, and
extend the life of many componen

Page 92 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 1 - 67
GEN
INFO
EC1B2001STORAGE
If your machine is to be stored for 60
days or more, some preventive mea-
sures must be taken to avoid deterio-
ration. After cleaning the machine
thoroughly, prepare i

Page 99 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 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 103 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) 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 104 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) MAINTENANCE SPECIFICATIONS
2 - 11
SPEC
NOTE:
 - marked portion shall be checked for torque tightening after break-in. Hot starter cable adjust bolt and locknut M6 × 0.75 1 4 0.4 2.9
Air filter case M

Page 107 of 912

YAMAHA WR 250F 2007  Manuale duso (in Italian) MAINTENANCE SPECIFICATIONS
2 - 14
SPEC
NOTE:
1. First, tighten the steering ring nut approximately 38 Nm (3.8 m  kg, 27 ft  lb) by using the steer-
ing nut wrench, then loosen the steering ring nut
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