Yanmar YM155d Service Manual page 79

e) Magnetic Switch
1)
Continuity Test for Shunt CoilISeries
Coil
Continuity of the shunt coil is checked by
taking a reading between its S-terminal and
the body of the magnetic switch.
If there
is no continuity, then there is a break in
the shunt coil winding.
Continuity o f the series coil i s checked
between the S-terminal and the M-terminal.
If there is no continuity, there is a break
in the series coil winding.
f )
Performance Test
1) Connections for Continuity Measure-
ment o f Dimension I .
2)
No-Load Performance Test
Switch
\
The diagram above shorn connections t o
be made for the purpose of measuring
dimension
I.
-
-
@
1
Switch
Battery
/ n
'
s
M
Battery
v
Starcer motor
Q
Stamr motor
N ~ I o a d performance
ten
is conducted
using the circuitry shown above.
Readinas obtained mu- meet rated
0
V: DC voltmeter
A: DC ammeter (25A1