1987 312-8

[Wvtroutbum81 296]

On 9/23/2025 at 9:05 PM, Wvtroutbum81 said:

Thank you. All the safety switches have been removed along with the circuit board.

I will try tomorrow

Im lost, does the magneto wire that hooks to the switch need grounded?

if anyone has a drawing of how to wire up with all safety switches and circuit board removed that would be awesome 

[953 nut 61,267]

10 hours ago, Wvtroutbum81 said:

Im lost, does the magneto wire that hooks to the switch need grounded?

if anyone has a drawing of how to wire up with all safety switches and circuit board removed that would be awesome 

Your ignition switch body should be grounded, when placed in the OFF position the "M" terminal is grounded by the switch.

The attached "Demystification Guide shows the complete wiring system and then breaks it down by function. Check it out and you will gain some understanding of which components are related to various functions. Once you begin to understand what each component does the wiring will not seem as intimidating.

The PTO Switch is in fact two switches that are mounted together. One of them prevents the starter from being used if the PTO is on, the other one allows the engine to run with the PTO on if the seat switch is activated by the driver being in the seat.

Here is a link to all electrical wiring references we have related to your tractor. https://www.wheelhorseforum.com/search/?q=21-12K804 wiring&type=downloads_file&updated_after=any&sortby=relevancy&search_and_or=and

 

 

[Wvtroutbum81 296]

14 minutes ago, 953 nut said:

Your ignition switch body should be grounded, when placed in the OFF position the "M" terminal is grounded by the switch.

The attached "Demystification Guide shows the complete wiring system and then breaks it down by function. Check it out and you will gain some understanding of which components are related to various functions. Once you begin to understand what each component does the wiring will not seem as intimidating.

The PTO Switch is in fact two switches that are mounted together. One of them prevents the starter from being used if the PTO is on, the other one allows the engine to run with the PTO on if the seat switch is activated by the driver being in the seat.

Here is a link to all electrical wiring references we have related to your tractor. https://www.wheelhorseforum.com/search/?q=21-12K804 wiring&type=downloads_file&updated_after=any&sortby=relevancy&search_and_or=and

 

 

Thank you, all of the safety switches have been removed

[953 nut 61,267]

16 minutes ago, Wvtroutbum81 said:

Thank you, all of the safety switches have been removed

If you will not be mowing, tilling or snow blowing then the only really important safety switch is the clutch switch so you or the children can't start the engine without the clutch being pushed down. Though TORO no longer has the switch similar switch used on appliances like washers or dryers to prevent operation with the door open can get the job done. It is typically mounted on the right side behind the belt guard in line with the rod from the brake peddle  

 

 

[Wvtroutbum81 296]

Success! Got the wiring figured out. Next problem is the float, its cracked and flooding the carb. Thanks for all the great info.