Removing The Ac Magneto Rotor; Checking The Stator Coil And Crankshaft Position Sensor; Checking The Starter Clutch - Yamaha YFM70RY Service Manual

EAS24490

REMOVING THE AC MAGNETO ROTOR

1. Remove:
• AC magneto cover
TIP
Loosen each bolt 1/4 of a turn at a time, in stag-
es and in a crisscross pattern. After all of the
bolts are fully loosened, remove them.
2. Remove:
• AC magneto rotor nut "1"
• Washer
TIP
• While holding the AC magneto rotor "2" with
the sheave holder "3", loosen the AC magneto
rotor nut.
• Do not allow the sheave holder to touch the
projection on the rotor.
Sheave holder
90890-01701
Primary clutch holder
YS-01880-A
3. Remove:
• AC magneto rotor "1"
(with the starter clutch)
• Woodruff key
AC MAGNETO AND STARTER CLUTCH
ECA13880
To protect the end of the crankshaft, place an
appropriate sized socket between the fly-
wheel puller set center bolt and the crank-
shaft.
TIP
• Use the flywheel puller "2".
• Install the flywheel puller bolts to the threaded
• Make sure the flywheel puller is centered over
EAS1S3L027
CHECKING THE STATOR COIL AND
CRANKSHAFT POSITION SENSOR
1. Check:
3
1
2
EAS24570

CHECKING THE STARTER CLUTCH

1. Check:
5-33
NOTICE
holes of the starter clutch.
the AC magneto rotor.
Flywheel puller
90890-01404
YM-01404
1
2
• Stator coil "1"
• Crankshaft position sensor "2"
Damage → Replace the crankshaft position
sensor/stator assembly.
• Starter one-way clutch "1"
Cracks/damage → Replace.
• Bolts "2"
Loose → Replace with a new one, and clinch
the end of the bolt.
2
1