Yamaha WR250F(Y) 2009, Owner'S Service Manual

Page: 147 / 224

5-51
AC MAGNETO AND STARTER CLUTCH
• Pickup coil "3"
• Bolt (pickup coil) "4"
2. Install:
• Holder "1"
• Bolt "2"
Pass the pickup coil lead and
charging coil lead under the holder
while taking care not to allow these
leads to get caught with each oth-
er. Also take care to pass the leads
so that they do not become loose
at the bend of the holder "a" in or-
der to avoid their contacting the
starter clutch drive gear.
Apply the sealant to the grommet of
the AC magneto lead.
3. Install:
• Idle gear 2 "1"
• Dowel pin "2"
Apply the engine oil on the idle gear
2.
4. Install:
• Idle gear plate "1"
• Bolt (idle gear plate) "2"
5. Install:
• Washer "1"
• Bearing "2"
• Starter clutch drive gear "3"
• Washer "4"
Apply the engine oil on the washer,
bearing and starter clutch drive gear
inner circumference.
6. Install:
• Starter clutch "1"
To rotor "2".
• Install the starter clutch with its
plate side upward.
• While installing the starter clutch,
push in the projections "a" one by
one on the clutch circumference.
• Push in the starter clutch until it hits
the rotor.
7. Install:
• Starter clutch assembly cover "1"
To rotor "2".
Install the starter clutch assembly
cover by fitting its pawls "a" into the
groove "b" in the rotor.
8. Install:
• Woodruff key "1"
• Rotor "2"
• Degrease the contact surfaces of
the tapered portions of the crank-
shaft and rotor.
• When installing the woodruff key,
make sure that its flat surface "a" is
in parallel with the crankshaft center
line "b".
• When installing the rotor, align the
keyway "c" of the rotor with the
woodruff key.
9. Install:
• Washer (rotor)
• Nut (rotor) "1"
Use the sheave holder "2"
Tighten the rotor nut to 65 Nm (6.5
m•kg, 47 ft•lb), loosen and retighten
the rotor nut to 65 Nm (6.5 m•kg, 47
ft•lb).
Bolt (pickup coil):
10 Nm (1.0 m•kg, 7.2
ft•lb)
Bolt:
7 Nm (0.7 m•kg, 5.1
ft•lb)
YAMAHA Bond No. 1215
(ThreeBond
®
No. 1215):
90890-85505
E
Bolt (idle gear plate):
10 Nm (1.0 m•kg, 7.2
ft•lb)
E
Nut (rotor):
65 Nm (6.5 m•kg, 47
ft•lb)
Sheave holder:
YS-1880-A/90890-
01701