Wiring Diameter Of A Starting Motor - Yanmar 3JH4E Service Manual

12. Electrical System
(2) Structure
When the starting switch is turned on, a magnet switch takes a voltage, and a pinion projects. The pinion
engages with the ring gear of a engine, and the engine is started.
Brush
Rear Cover

12.3.4 Wiring diameter of a starting motor

1) When a starting switch is turned on, a magnet
switch is charged, and a moving core is absorbed,
and a pinion clutch is moved forward through a
lever, and the pinion engages with a ring gear.
2) When the pinion engages the ring gear, because
a main contact point is closed and the main
electric current flows and a pull coil is short-
circuited by the main contact point and it stops
being charged with electricity, the pinion is kept at
the position by a holding coil during the start.
3) When the starting switch is turned off, the main
contact point becomes open, and the pinion clutch
is returned to the stop position by a return spring.
Magnetic Switch Center Bracket (A)
Armature Planet Gear
Yoke
Torsion Spring
Shift Lever
Center Bracket (P)
Internal Gear
Starting switch
Battery
177
Gear Case
Pinion Shaft
Pinion
Magnetic switch
S
B
M
Mag
Mag
Starting motor