How To Bypass Brake Switch On Lawn Mower

In the first role of this series we disabled the seat safety switch.  In this instalment we'll featherbed the safety switch that prevents yous from starting the engine unless the brake pedal is depressed.

The Brake Safety Switch is located under the hood on the left-hand side, almost the restriction pedal.

The switch features a pivot.  When you printing the brake pedal down all the way, the pivot gets pressed in as well.  A depressed pin closes the circuit betwixt a couple of wires, and allows the engine to start.

Now, y'all probably could use cable ties (or other approaches) to try lock the pivot into the depressed position, but (as earlier) I am interested in a permanent and fail-proof solution, so didn't explore that line of thinking.

Unlike the seat prophylactic switch, the connector that plugs into the restriction rubber switch is not 'intelligent', so a simple solution is to just bypass the safety switch entirely.  Start by unplugging the connector.

Now, there isn't a lot of slack on the wires leading into the connector — which makes inspecting information technology and working on it a bit bad-mannered.  To brand life a fleck easier for yourself, simply feed the connector back past the battery to the other (right-mitt) side of the engine compartment.  (Mine came out around the dip stick.)  That gives you a lot more slack to play with.

The adjacent step is to curt two of the wires that atomic number 82 into the connector.  This tin can exist done by simply using some bit wire as a bridge and jamming it into two slots at the end of the connector, but I don't see that approach as beingness particularly robust.  Instead I would suggest using a small screwdriver to assistance release the two regal wires from the connector.

One time you have them released, you just need to connect them in some way that doesn't gamble conducting any electricity to/from any other components in the engine compartment, or the frame.  I prefer to practise this by only cutting off the terminals from the terminate of the wire, stripping them back a bit, twisting the bare ends together, then inserting the exposed ends into an insulated screw connector.

The required pair of wires are now shorted and you should be able to start your lawn tractor without having to depress the brake pedal.

I couldn't find a nice place to secure the wires on the correct-mitt side of the engine compartment, and so I simply fed the connectors dorsum through to the left-hand side and plugged the original connector back into the brake rubber switch.  With the regal wires removed this serves no function other than to keep the connectors and wires secured.  The screw connector merely hangs in that location — information technology doesn't touch anything or need additional support.

That's it.  Yous're done.

This whole process can be summarised as "short the 2 purple wires", but since I had the photos and was asked how to do this, I figured I'd put together a more than comprehensive and footstep-by-pace guide.  Promise it helps.

Source: https://tp69.blog/2021/01/10/disabling-lawn-tractor-safety-switches-part-2/

Share this post