TYM ET350 ECONO, Operator'S Manual

Page: 65 / 175

Trouble and possible cause Possible remedy
C. Starter continues running after engine has
been Started .
(1) Magnetic switch contacts sintered
(2) Incorrect adjustment of the travel of magnetic
switch iron core
D. Starter begins to run and hits the end face of
ring gear before starter gear has been meshed
Short magnetic switch travel
(1) Repair magnetic switch contacts
(2) Readjust the travel
Readjust magnetic switch travel
58
Appendix : Check of silicon rectifiers
When checking silicon rectifiers take off the plate connecting generator winding with rectifiers and
measure rectifiers one by one with an avometer of high inner resistance in RX1 step (Fig. 7-1)
Fig. 7-1 Check silicon rectifiers
First measure the rectifiers on the rear end cover. Contact “-” measure stick of avometer with end cover,
and “+” measure stick with rectifier wire, the reading on the avometer should be 8~10 Ω . Then contact
“-” measure stick with rectifier wire and “+“ measure stick with end cover, the reading on the avometer
should be over 10000 Ω . The electrode of the three rectifiers on the rectifier panel is opposite to that of
the three rectifiers on the end cover. The result of measurement is also apposite. If the positive
resistance is below 1 Ω , this means the result are of short circuit. If the negative resistance is hundreds
of k Ω , this means the rectifiers are of open circuit.