Yanmar 4TNE98, Service Manual, Page: 232 / 246

4TNV98 & 4TNE98 Diesel Engine Section 7. Starter Motor 230
Magnetic Switch
If the starter motor becomes wet, replace the
magnetic switch even if the magnetic switch
assembly function is normal.
Shunt Coil Continuity Test
Check for continuity between the “S” terminal and
the switch body using a multimeter
(Figure11-21) .
The multimeter should indicate continuity.
If the multimeter does not indicate continuity,
replace the magnetic switch.
Figure 11-21
Series Coil Continuity Test
Check for continuity between the “S” and “M”
terminals using a multimeter
(Figure11-22) . The
multimeter should indicate continuity.
If the multimeter does not indicate continuity,
replace the magnetic switch.
Figure 11-22
Coil Resistance Test
See Starter Motor Specifications on page 222 for
the service limit.