422 robins engine won't turn off

[maujer422]

Re: 422 robins engine won\'t turn off

This is what Terry told me.
S- Black Wire
L- White [runs fan]
M- Green [ignition]
B- Red [starter]
This is about all I know, or can figure out from the wiring diagram in the manual.

 

[J_J]

Re: 422 robins engine won\'t turn off

Are you certain about the red wire, that should be the 12 volts to the switch, terminal "B" which is for Battery. The wire hooked to "S" terminal should be the start wire. The "M' usually stands for magneto, and is grounded when you turn the switch off. The "L" is for load, in this case, it is the fan. The fifth terminal probably has a "G" for ground, and sometimes is not used because the switch is grounded. A good meter can easily check out your switch. If I am wrong, please let me know. The Kohler uses different colored wires. but the lettering is usually the same. I just rewired my switch on my 1445, and now works like it should.

 

[BobRip]

Re: 422 robins engine won\'t turn off

I agree with your color code from the manual on my 2000 PT422. The diagram says Kohler engine, but I have the Robin.

Bob Rip

 

[cqaigy]

Re: 422 robins engine won\'t turn off

Thanks,

I'll have to get better glasses cause i didn't see any letters on the back of the ign switch. /forums/images/graemlins/frown.gif

 

[cqaigy]

Re: 422 robins engine won\'t turn off

Well just to add to the confusion. /forums/images/graemlins/grin.gif

This is the info i got from Keith.

wire color - lug letter
Green - L
White - G
reb - B
black - S

 

[J_J]

Re: 422 robins engine won\'t turn off

The confusion lies in the fact that there is a wiring harness from the switch connector, and the connector for the engine.
The below data was obtained from the service manual for the engine.

Ignition Switch

B lug 12 volt supply from the battery.
S lug In start position, B and S are connected internally.
L lug Is for accessories such as fan or lights.
M lug Is used to ground the magneto through a stop diode.
G lug Is used as ground if there is no metal to mount switch.

The wiring from the switch sometimes has its own color code. In the engine service manual, they don't show the intermediate wiring harness. There are to many applications.

 

[cqaigy]

Re: 422 robins engine won\'t turn off

ok this is what is on my ign switch.
view of tabs looking at back of switch

_ S - Black
Green - M _ _ B - Red
Blue - L _ _ | Black wire hour meter/lites
L - Blue

S - Black
M - Green
B - Red
L - Blue
tab on right side - Black hour meter / lites ......


well this doesn't look anything like i formated it. /forums/images/graemlins/confused.gif

 

[J_J]

Re: 422 robins engine won\'t turn off

Does my explanation above agree with your switch setup?

 

[J_J]

Re: 422 robins engine won\'t turn off

The 22 hp, and the 25 hp Robin engines appear to use the same switch.

The 25 hp Kohler uses most of the same lettering, except for the "A" lug. It is for accessories, carb, fan, oil sentry.

The "L" lug on the Robin switch is for load, fan, carb, and oil warning lights.

 

[cqaigy]

Re: 422 robins engine won\'t turn off

Replacing the ignition switch fix the shut off problem. It was in stock at the local tractor store. Only $5 dollars cheaper and no shipping.

replacement was Oregon 33-399. Replacement for Scag #48798 and Briggs #493625