relay YAMAHA WR 250F 2009 Owners Manual

YAMAHA WR 250F 2009 Owners Manual WR 250F 2009 YAMAHA YAMAHA https://www.carmanualsonline.info/img/51/52323/w960_52323-0.png YAMAHA WR 250F 2009 Owners Manual

Page 36 of 224

YAMAHA WR 250F 2009  Owners Manual 2-11
MAINTENANCE SPECIFICATIONS
Charging system:System type AC magneto----
Model (stator)/manufacturer 5UM 30/YAMAHA ----
Normal output 14 V/120 W at 5,000 r/min----
Charging coil resistance (color) 0

Page 40 of 224

YAMAHA WR 250F 2009  Owners Manual 2-15
TIGHTENING TORQUES
△Rear wheel sprocket M8 × 1.25 6 50 5.0 36
△ Rear brake disc cover M6 × 1.0 2 10 1.0 7.2
△ Rear brake caliper protector M6 × 1.0 2 7 0.7 5.1
Drive chain puller adjust

Page 41 of 224

YAMAHA WR 250F 2009  Owners Manual 2-16
TIGHTENING TORQUES
1. First, tighten the steering ring nut approximately 38 Nm (3.8 m•kg, 27 ft•lb) by using the steering nut wrench, then loosen the steering ring nut one turn.
2. Retighten

Page 51 of 224

YAMAHA WR 250F 2009  Owners Manual 2-25
CABLE ROUTING DIAGRAM
A. Fasten the wire harness, nega-tive battery lead and starter mo-
tor lead to the upper engine 
bracket (left side).  Locate the 
clamp end facing toward the up-
per side o

Page 59 of 224

YAMAHA WR 250F 2009  Owners Manual 3-6
MAINTENANCE INTERVALS FOR COMPETITION USE
FRONT FORKSInspect and adjust ●●
Replace oil ●● Suspension oil "S1"
Replace oil seal ●
FRONT FORK OIL SEAL AND 
DUST SEAL Clean and lube ●●

Page 192 of 224

YAMAHA WR 250F 2009  Owners Manual 6-31
SWINGARM
SWINGARM
REMOVING THE SWINGARMOrder Part name Qty Remarks Hold the machine by placing the suitable stand 
under the engine. Refer to "HANDLING NOTE".
Brake hose holder  Refer to "FRONT

Page 193 of 224

YAMAHA WR 250F 2009  Owners Manual 6-32
SWINGARM
DISASSEMBLING THE SWINGARMOrder Part name Qty Remarks1 Cap 2 Refer to removal section.
2 Relay arm 1
3 Connecting rod 1
4Collar 2
5 Oil seal 2
6 Thrust bearing 2
7 Bushing 2
8 Oil seal

Page 194 of 224

YAMAHA WR 250F 2009  Owners Manual 6-33
SWINGARM
HANDLING NOTE
Support the machine securely so 
there is no danger of it falling over.
REMOVING THE CAP
1. Remove:• Left cap "1"
Remove with a slotted-head screw-
driver inserted under

Page 195 of 224

YAMAHA WR 250F 2009  Owners Manual 6-34
SWINGARM
• Apply the molybdenum disulfide grease on the bearing when install-
ing.
• Install the bearing by pressing it on  the side having the manufactures 
marks or numbers.
INSTALLING THE

Page 196 of 224

YAMAHA WR 250F 2009  Owners Manual 6-35
SWINGARM
10. Tighten:• Nut (connecting rod) "1"
11. Tighten: • Nut (relay arm) "1"
12. Install: • Cap "1"
Install the right cap with its mark "a" 
facing forward.
13. Install:• Bolt (lowe
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