Kubota EA330-E4 Series Workshop Manual page 63

EA330-E4, WSM
5) Operation of Starter
 When Starter Switch is Turned to START
Position
Current from the battery flows through the pull-in coil
and holding coil, producing the magnetism in the
windings to pull the plunger in.
At this time, the drive lever moves the pinion to
engage with the ring gear.
(1) Drive Lever
(2) Contact Plate
(3) Commutator
(4) Screw
(5) Armature
(6) Pole Core
(7) Return Spring
(8) Battery
(9) Ground
(10) Pinion
(11) Ring Gear
(12) Spline Tube
 When Contact Plate is Closed
Large current flows through the motor section to
operate the motor.
At this time, the pinion is moved forward by the screw
for more contact.
Since the pull-in coil ends are short-circuit by the
contact plate, the plunger is held only by the magnetism
of the holding coil.
 When Starter Switch is Released
Current flows instantaneously through the pull-in coil
the opposite direction as shown in figure. Therefore, the
magnetic field is collapsed immediately.
As a result, the plunger is returned by the return
spring. Simultaneously, the pinion is disengaged from
the ring gear, the contact plate is disconnected, and the
starter is immediately stopped by the armature brake.
1-M30
ENGINE
A: Operated by Lever
PC: Pull-in Coil
HC: Holding Coil
S: Switch
9Y1211018ENM0049US0
KiSC issued 05, 2015 A