2015 YAMAHA WR 250F relay

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Page 26 of 430

YAMAHA WR 250F 2015  Owners Manual BASIC SERVICE INFORMATION
1-12
ECA
NOTICE
Handle electrical components with special 
care, and do not subject them to strong 
shocks.
ECA
NOTICE
Electrical components are very sensitive to 
and can be

Page 67 of 430

YAMAHA WR 250F 2015  Owners Manual ELECTRICAL SPECIFICATIONS
2-12
Starter relay
Amperage 180.0 A
Coil resistance 4.18–4.62 
Starting circuit cut-off relay
Coil resistance 75.6–92.5 
Headlight relay
Coil resistance 86.4–105.

Page 73 of 430

YAMAHA WR 250F 2015  Owners Manual TIGHTENING TORQUES
2-18
Front brake disc bolt M6 6 12 Nm (1.2 m·kgf, 8.7 ft·lbf)
Rear brake disc bolt M6 6 14 Nm (1.4 m·kgf, 10 ft·lbf)
Footrest bracket bolt M10 4 55 Nm (5.5 m·kgf, 40 ft·lbf)
S

Page 74 of 430

YAMAHA WR 250F 2015  Owners Manual TIGHTENING TORQUES
2-19
Drive chain tensioner bolt (lower 
side)M8 1 16 Nm (1.6 m·kgf, 12 ft·lbf)
Drive chain support bolt M6 1 7 Nm (0.7 m·kgf, 5.1 ft·lbf)
Drive chain support nut M6 2 7 Nm (0.7

Page 75 of 430

YAMAHA WR 250F 2015  Owners Manual TIGHTENING TORQUES
2-20
TIP
Lower ring nut
1. First, tighten the lower ring nut approximately 38 Nm (3.8 m·kgf, 27 ft·lbf) by using the steering nut 
wrench, then loosen the lower ring nut one turn.

Page 77 of 430

YAMAHA WR 250F 2015  Owners Manual LUBRICATION POINTS AND LUBRICANT TYPES
2-22
EAS2GB2072CHASSISStarter idle gear inner surface, thrust surfaces
Starter clutch drive gear inner surface, thrust surfaces
Cylinder head cover gasketThree b

Page 89 of 430

YAMAHA WR 250F 2015  Owners Manual CABLE ROUTING DIAGRAM
2-34
1. Clutch cable
2. Throttle cable (return)
3. Throttle cable (pull)
4. Engine stop switch lead
5. Coupler for connecting optional part
6. Engine stop switch coupler
7. Recti

Page 95 of 430

YAMAHA WR 250F 2015  Owners Manual CABLE ROUTING DIAGRAM
2-40
1. Battery negative lead
2. Fuel hose
3. Fuel pump coupler
4. Fuel pump lead
5. Resistor
6. Resistor coupler
7. Battery positive lead
8. Lean angle sensor
9. Starter motor l
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