YAMAHA YZ250F 2008 Owners Manual

YAMAHA YZ250F 2008 Owners Manual YZ250F 2008 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/53953/w960_53953-0.png YAMAHA YZ250F 2008 Owners Manual
Trending: sensor, seat adjustment, air condition, light, open gas tank, clutch, oil filter

Page 171 of 192

YAMAHA YZ250F 2008  Owners Manual 5-39
REAR SHOCK ABSORBER
HANDLING NOTE
• Support the machine securely so there is no danger of it falling 
over.
• This rear shock absorber is pro-
vided with a separate type tank 
filled with hig

Page 172 of 192

YAMAHA YZ250F 2008  Owners Manual 5-40
REAR SHOCK ABSORBER
3. Install:• Lower bearing "1"
Install the bearing by pressing it on 
the side having the manufactures 
marks or numbers.
INSTALLING THE SPRING (REAR 
SHOCK ABSORBER)
1. In

Page 173 of 192

YAMAHA YZ250F 2008  Owners Manual 5-41
REAR SHOCK ABSORBER
• Bolt [rear frame (lower)] "3"
7. Tighten: • Bolt (air filter joint) "1" Bolt [rear frame (lower)]:
32 Nm (3.2 m•kg, 23 
ft•lb)
Bolt (air filter joint): 3 Nm (0.3 mâ€

Page 174 of 192

YAMAHA YZ250F 2008  Owners Manual 6-1
ELECTRICAL COMPONENTS AND WIRING DIAGRAM
ELECTRICAL
ELECTRICAL 
COMPONENTS AND 
WIRING DIAGRAM
ELECTRICAL COMPONENTS
1. Engine stop switch
2. Throttle position sensor
3. Neutral switch4. CDI magne

Page 175 of 192

YAMAHA YZ250F 2008  Owners Manual 6-2
IGNITION SYSTEM
IGNITION SYSTEM
INSPECTION STEPS
Use the following steps for checking the possibility of the malfunctioning engine being attributable to ignition system failure 
and for checking t

Page 176 of 192

YAMAHA YZ250F 2008  Owners Manual 6-3
IGNITION SYSTEM
SPARK GAP TEST
1. Disconnect the ignition coil from spark plug.
2. Remove the ignition coil cap.
3. Connect the dynamic spark tester 
"1" (ignition checker "2") as 
shown.
• Igni

Page 177 of 192

YAMAHA YZ250F 2008  Owners Manual 6-4
IGNITION SYSTEM
3. Inspect:• Charging coil 2 resistanceOut of specification
→Replace.
CHECKING THE NEUTRAL 
SWITCH
1. Inspect: • Neutral switch conduction
Not conductive while it is in neutr

Page 178 of 192

YAMAHA YZ250F 2008  Owners Manual 6-5
THROTTLE POSITION SENSOR SYSTEM
THROTTLE POSITION SENSOR SYSTEM
INSPECTION STEPS
If the throttle position sensor will not operate, use the following inspection steps.
*marked: Refer to "IGNITION S

Page 179 of 192

YAMAHA YZ250F 2008  Owners Manual 6-6
THROTTLE POSITION SENSOR SYSTEM
HANDLING NOTE
Do not loosen the screw (throttle 
position sensor) "1" except when 
changing the throttle position sen-
sor due to failure because it will 
cause a d

Page 180 of 192

YAMAHA YZ250F 2008  Owners Manual 6-7
THROTTLE POSITION SENSOR SYSTEM
Measure the output voltage accurate-
ly with a digital electronic voltmeter 
that gives an easy reading of a small 
voltage.
10. Put the aligning marks "a" on the t
Trending: fuel tank capacity, roof, oil type, steering wheel adjustment, checking oil, wheel alignment, oil