Hey Rob switch wiring

Discussion in 'Mechanic and Repair' started by ChadsLawn, Jan 12, 2007.

  1. ChadsLawn

    ChadsLawn LawnSite Bronze Member
    Posts: 1,110

    Hey bud can you help me out here. Im going to take the key switch out (cuts off all the time) and I want to use just a on/off switch. I already have a push button starter switch. So I want to eliminate the key switch all together.
    heres a picture of the wiring to the switch. Am I able to use a on/off switch? Heavy duty of course marine type.

    [​IMG]
     
  2. Restrorob

    Restrorob LawnSite Fanatic
    Posts: 11,024

    What engine we talking about here ? Model and serial please !
     
  3. ChadsLawn

    ChadsLawn LawnSite Bronze Member
    Posts: 1,110

    Kees 52 ZTMax. Model# ZK52220 Kohler CH22
     
  4. fixer67

    fixer67 LawnSite Silver Member
    Posts: 2,104

    This is not a good ideal. If the ignition is battery powered then it has to be switched. The charging system will have to be switched. The fuel solenoid if it has one will have to be switched. You will end up with a dash board that looks like something from a 747. And if you forget to set all the switches you will kill the battery over and over from leaving something on or run the battery dead from trying to start it and not turing something on. Why not just find out why it keeps cutting off like maybe a bad safty swithc? You may wished you had not done this. Time will tell.
     
  5. ChadsLawn

    ChadsLawn LawnSite Bronze Member
    Posts: 1,110

    Its the ignition switch. Because if I keep the key turned like im tryin to start it, it satys running. But as soon as I let go, it shuts off. Last time I bought a key switch, it cost me almost $30. Dont see spending that much for a $5 switch.

    But if its gonna take that many switches, Ill stick to the regular switch.
     
  6. ChadsLawn

    ChadsLawn LawnSite Bronze Member
    Posts: 1,110

    If nothing how bout a part number for the switch.. Please......
     
  7. fixer67

    fixer67 LawnSite Silver Member
    Posts: 2,104

    I do not have a wiring diagram for that unit but from the sound of it you have lost the ACC circuit. That runs things like fuel solenoids and battery ignitions. When you start the motor you get power to the starter. On most Kohler engines the power is pulled from the start circuit when starting then drop back to the ACC circuit when running. If this unit does not use a starter relay and you run the starter solenoid though the switch you will fry switches often. The solenoid that is mounted on top of the starter used on the Kohler engines of this type pull about 30 amps and the standard key switch is not made to handle that much power. Look at the carb, you will see a red wire that plugs into the fuel solenoid. That wire is loosing power when you let off the switch. If your engine uses a SAM (Spark Advance Module) that looks like a little black box mounted on one side beside the valve cover then it too gets it's power off the same red wire. When you are letting off the switch and the starter is dropping out then you are losing both fuel and spark (on SAM type engines). Check the red wire for power when starting and then when the key is in the run position. If you are losing power there then the only switch you may need is to run power to that red wire when it is running. To kill the engine just kill the power to the red wire. The wiring harness to this type of Kohler engine has gave me a lot of trouble in the past so check the harness plug. That may be where you are loosing power at. Good luck and have fun.
    PS=The voltage rectifier regulator also gets it power from the purple wire at the wire harness plug. At the plug you will see a purple wire and a red wire tied together at the engine side of the plug. This is where you test for power in the run mode. This is also where you tie you switch in if you go that route and for go the key switch.
     
  8. fixer67

    fixer67 LawnSite Silver Member
    Posts: 2,104

    Remove the key switch and take a picture of the terminal side of the switch. Just by looking at how the terminal path is laid out more than a few people here can tell you the after market Rotary number you will need.

    Like the picture below
     

    Attached Files:

  9. ChadsLawn

    ChadsLawn LawnSite Bronze Member
    Posts: 1,110

    Thanks, Ill take it out tomorrow and compare it to the image you posted. Plus Ill goto the site and look.. Thanks
     
  10. fixer67

    fixer67 LawnSite Silver Member
    Posts: 2,104

    That image was just to show you what you need to show us here. There are a lot of these switches and every one will have a differant patten on the bottom side. That one I posted is just the first one I came to. The chances of yours being THAT one are very very low.
     

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