Yamaha WR450F, Owner'S Service Manual

Page: 706 / 794

6 - 14
– +
ELEC
ELECTRIC STARTING SYSTEM
5. Measure:
• Brush length
a
Out of specification
→
Replace the
brushes as a set.
Min. brush length:
3.5 mm (0.14 in)
6. Measure:
• Brush spring force
Out of specification
→
Replace the brush
springs as a set.
Brush spring force:
3.92 ~ 5.88 N
(400 ~ 600 gf, 14.1 ~ 21.2 oz)
ASSEMBLY
1. Install:
• Brush spring
1
• Brush
2
2. Install:
• Armature assembly
1
Install while holding down the brush using
a thin screw driver.
CAUTION:
Be careful not to damage the brush during
installation.