Service manual

G420F(FE) Service Manual Chapter 4. Engine Electrical System
147
Disassembly
To remove the overrunning clutch from the armature
shaft, remove the stop ring. Remove the stop ring by
moving it to the pinion side, and then remove the
stop ring from the shaft.
Inspection (After Disassembly)
1. Ground Test of Armature Coil.
Check continuity between the commutator and the
armature coil using a circuit tester. If there is
continuity, replace the rotor assembly.
2. Short Circuit Test of Armature Coil.
Inspect the armature coil in the growler and if
there is short circuit, replace the coil. During core
rotation, if the blade attached in the core is
vibrated, the armature is short.
3. Open Circuit Test of Armature Coil.
Check continuity between the commutator
segments using a circuit tester. If there is no
continuity, replace the armature assembly owing
to open circuit of commutator segment.