2010 YAMAHA WR 250F light

[x] Cancel search: light

Page 121 of 232

YAMAHA WR 250F 2010  Owners Manual 5-18
CAMSHAFTS
The camshafts should be installed 
onto the cylinder head so that the 
punch mark "c" on the exhaust cam-
shaft and the punch mark "d" on the 
intake camshaft must align with the 
cylin

Page 126 of 232

YAMAHA WR 250F 2010  Owners Manual 5-23
VALVES AND VALVE SPRINGS
4. Measure:• Margin thickness "a"Out of specification →Replace.
5. Measure: • Runout (valve stem)Out of specification →Replace.
• When installing a new valve al

Page 127 of 232

YAMAHA WR 250F 2010  Owners Manual 5-24
VALVES AND VALVE SPRINGS
CHECKING THE VALVE SPRINGS
1. Measure:• Valve spring free length "a"Out of specification →Replace.
2. Measure: • Compressed spring force "a"Out of specification →

Page 164 of 232

YAMAHA WR 250F 2010  Owners Manual 5-61
CRANKCASE AND CRANKSHAFT
DISASSEMBLING THE 
CRANKCASE
1. Separate:• Right crankcase
• Left crankcase
Separation steps:
a. Remove the crankcase bolts "1",  hose guide "2" and clutch cable 
hol

Page 166 of 232

YAMAHA WR 250F 2010  Owners Manual 5-63
CRANKCASE AND CRANKSHAFT
5. Install:• Dowel pin "1"
• O-ring "2" 
• Right crankcaseTo left crankcase.
• Apply the lithium soap base grease 
on the O-ring.
• Fit the right crankcase onto

Page 168 of 232

YAMAHA WR 250F 2010  Owners Manual 5-65
TRANSMISSION, SHIFT CAM AND SHIFT FORK
REMOVING THE TRANSMISSION
1. Remove:• Main axle "1"
• Drive axle "2"
• Shift cam
• Shift fork 3
• Shift fork 2
• Shift fork 1
• Remove assembl

Page 182 of 232

YAMAHA WR 250F 2010  Owners Manual 6-13
FRONT BRAKE AND REAR BRAKE
A. Front
B. Rear
INSTALLING THE FRONT BRAKE 
MASTER CYLINDER
1. Install: • Brake master cylinder "1"
• Brake master cylinder bracket "2"
• Bolt (brake master cyli

Page 183 of 232

YAMAHA WR 250F 2010  Owners Manual 6-14
FRONT BRAKE AND REAR BRAKE
INSTALLING THE FRONT BRAKE 
HOSE
1. Install:• Copper washer "1" 
• Brake hose "2"
• Union bolt "3"
Always use new copper washers.
Install the brake hose so that i
Page:   < prev 1-10 ... 9-16 17-24 25-32 33-40 41-48 49-56 next >