About This File
From the #492-4509 Electrical manual
Low-oil switch used in the starter circuit for Kohler single cylinder engines starting with the 1986 models
Note - Some wiring diagrams show the switch installed NO (Normally open) and some NC (Normally closed)
We do not know if they are correct.
NC will be on the top when viewed from the left side of the tractor.
NO will be on the top when viewed from the right side of the tractor.
The screen shots of Fig. 3 illustrate the switch positions.
Left and right is always from the operator's position in the seat.
Help us out. Observations and comments welcome to solve this mystery.
KH10138 = 47 099 04 - Use 25 704 04
47 099 04 - Use 25 704 04
25 099 03 - Use 25 704 01
25 099 17 - Use 25 704 03
25 099 19 - Use 25 704 04
25 704 01 - Used in Kohler M10 & M12 replaced by 25 704 03 - Not listed for engines used by Wheel Horse
25 704 03 - Used in Kohler M14 & M16 replaced by 25 704 03S - Still available from Toro (PT $143.73 January 29, 2021)
25 704 04 - replaced by 25 704 04S - Still available from Toro (PT $115.32 January 29, 2021)
25 704 04 Low oil switch used in (Kohler #) ------------------------------
K321-60440 - 1986 414-8 31-14K801
K341-71381 - 1986 416-8 31-16K802
M10-461521 - (1987-1991) 1987 310-8 21-10K804, 1988 310-8 21-10K805, 1989 310-8 21-10K806, 1990 310-8 31-10K801, 1991 310-8 31-10K802
M10-461533 - (1992?) This engine listed by Kohler as used by Wheel Horse but no record at Toro
M10- 46154 - Listed by Toro for 1992 310-8 31-10K803 but is listed by Kohler as built for Sanborn M10-461540 (typo?)
M10-461545 - Listed in the 1992 310-8 31-10K803 ipl as the engine used
M12-471527 - (1987-1997) 1987 312-8 21-12K804, 1987 312-A 21-12KE03, 1988 312-8 21-12K805, 1989 312-8 21-12K806, 1990 312-8 31-12K801, 1990 312-H 31-12KE01, 1990 312-8e R1-12K802, 1991 312-8 31-12K802, 1992 312-8 31-12K804, 1992 312-8e R1-12K804, 1993 312-8e 73380, 1994 312-8 73362, 1994 312-8e 73380, 1995 312-8 73362, 1996 312-8 73362, 1996 312-8 73363, 1997 312-8 73363
M12-471546 - 1988 312-8e E1-12K801, 1989 312-8e E1-12K802, 1990 312-8e R1-12K801
M14-601524 - 1987 414-8 31-14K802
M14-601540 - 1988 414-8 31-14K803, 1989 414-8 31-14K804
M16-711523 - 1987 416-8 31-16K803, 1988 416-8 31-16K804
KH10138 Low oil switch used on (Wheel Horse #) ----------------------------
1988 models 21-10K805, 21-12K805, 31-14K803, 31-16K804
1989 models 21-10K806, 21-12K806, 31-14K804
1990 models 31-10K801, 31-12K801, 31-12KE01
1991 models 31-10K802, 31-12K802, 51-12KE01
1992 models 31-10K803, 31-12K804, 51-12KE2
KH10826 Low oil switch used on (Wheel Horse #) --------------------------------------------------
1991 models 31-10K802, 31-12K802, 51-12KE01 - KH10826 listed as a washer for the governor - Should be KH10136 - typo
1992 model R1-12K804
1993 models 73320, 73380
1994 models 73362, 73380
1995 model 73362
1996 model 73362
47-099-04 Low oil switch used on (Kohler #) ----------------------------------------------------------
1996 model 73363
1997 model 73363
Service bulletin on the switch has instructions on how to remove switch without damage.
