Bypassing safety switches

Discussion in 'Mechanic and Repair' started by mkosbab, May 26, 2006.

  1. mkosbab

    mkosbab LawnSite Member
    Messages: 11

    I have a 48" Bobcat walkbehind. I am not sure of the year but it is at least 5 years old. Today, while loading it into the trailer it just died. Plenty of gas and oil. When I got it home I took it apart and wasn't seeing any spark. My first impression out in the field was a safety switch and seeing as how I can't find anything wrong here I think it has to be a safety switch. Is there any way to bypass the switches in order to troubleshoot the problem.

    I am very safety conscience and would not and will not let them remain bypassed I'm just looking for a way to troubleshoot.

    Thanks
     
  2. PLM-1

    PLM-1 LawnSite Bronze Member
    Messages: 1,640

    I believe you can just use a jumper to wire around them. You may try blowing them out with an air hose as well. I seem to get weird stuff in mine sometimes which causes them not to work properly.
     
  3. mkosbab

    mkosbab LawnSite Member
    Messages: 11

    Thanks I'll give that a try.
     
  4. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,026

    You can unplug the kill wire from the engine to the unit harness and that will eliminate all safety switches and the key switch to find out if it's a engine problem or switch problem. You didn't say what engine is on this so I can't give you a idea what color or where to find this kill wire.
     
  5. mkosbab

    mkosbab LawnSite Member
    Messages: 11

    Sorry about that it is a kawasaki fc420v
     
  6. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,026

    It will be a black wire coming out from under the blower housing (flywheel cover) usually on the dipstick side if the engine.
     
  7. mkosbab

    mkosbab LawnSite Member
    Messages: 11

    I have a white wire coming from under the housing that connects to the (coil?) and a black wire that looks like a ground on the other side
     
  8. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,026

    OK My bad, You have a wire coming from under the housing to the exciter then a wire from the exciter to the unit harness, This is the wire to disconnect.
     
  9. mkosbab

    mkosbab LawnSite Member
    Messages: 11

    If that doesn't do anything, would you say the coil is shot?
     
  10. Restrorob

    Restrorob LawnSite Fanatic
    Messages: 11,026

    Here is a diagram, Letter E is the exciter;

    FC420 Wire Harness.JPG
     

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