Yanmar 4LHA-DTP, Operation Manual

Page: 633 / 670

Chapter 9 Electrical System
3. Starter Motor
, 4LHA Sent
3. Starter Motor
The starter motor is installed on the flywheel housing.
When the starting button is pushed, the starter motor
pinion flies out and engages the ring gear of the flywheel.
Then the main contact is closed, current flows, and the
engine is started.
After the engine starts, the pinion automatically returns to
its initial position when the starting button is released.
Once the engine starts, the starting button should be
released immediately. Otherwise, the starter motor may be
damaged or burned out.
2 Features
(1) The starter motor is compact and produces high outp
through high speed revolutions. It has increased torqi
with employing a reduction gear to reduce the spe<
between the armature and the pinion.
(2) The use of ball bearings at the armature shaft (front ai
rear sides) and the needle bearings for the gear shi
(rear side) has boosted the durability of the starter n
1 Specifications and Performance
Engine model
4LHA-HTE
Model
S13-41A
Rating (sec.)
30
Output (kW)
2.5
Direction of rotation
(viewed from pinion side)
Clockwise
Mass kg
7.3
Clutch system
Overrunning
Engagement system
Magnetic shift
No. of pinion teeth
15
Pinion flyout voltage (V)
8 or less
No-load
Terminal voltage (V)
12
No-load
Current (A)
150 or less
No-load
Speed (rpm)
3800 or greater
Loaded
characteristics
Terminal voltage (V)
8.25
Loaded
characteristics
Current (A)
500A
Loaded
characteristics
Speed (rpm)
1000 or greater
Loaded
characteristics
Torque N(kgf)-m
19.6(2.0)
or greater
I-
3.0-158.8(6)
2.5- 49.0(5)
2.0
1.0-
0.5-
0
39.2(4)
1.5- 29.4(3)
19.6(2)
9.8(1)-
0
6000-I
5000
4000-
3000-
2000
1000
0
Battery Y 160-10. -20t 4/4 Charge
Battery Y 160-10 15 r 2/4 Charge
Ou put
\
—-fr
//
r v
— \
. s
\
\ \
L' \
0 100 200 300 400 500 600 700 8C0 900 1000 1100 1200
Current (A)
SI 3-41A Performance curves