Exmark (Propane Mower) not starting

Discussion in 'Mechanic and Repair' started by agm, Nov 3, 2013.

  1. agm

    agm LawnSite Member
    from NM
    Posts: 167

    I recently purchased a used 60" Exmark propane powered mower. (Got a great deal on it). The problem is it is a PAIN to start. I got it started a few times but now it wont start at all. It has spark on both plugs. To even start it, you have to start it with propane off, then turn it on when it starts. But, like I said, now it wont even start! This is my first propane powered unit and I'm not familiar with these systems. It has a Kawasaki FH680V engine, 23HP.
     
  2. agm

    agm LawnSite Member
    from NM
    Posts: 167

    Anyone have any ideas?
     
  3. LandFakers

    LandFakers LawnSite Fanatic
    from CT
    Posts: 6,229

    Check valve clearances to see if they are in spec.
    Posted via Mobile Device
     
  4. agm

    agm LawnSite Member
    from NM
    Posts: 167

    Did that and they where good. Any other ideas?
     
  5. ed2hess

    ed2hess LawnSite Fanatic
    Posts: 13,140

    It may be not enough vacuum to open the propane valve. So find the vacuum line put ina tee and run line so you can suck on it to help. When it starts block the hose with golf tee. The valves can be adjusted or repaired to fix problem, kinda complicated.
     
  6. agm

    agm LawnSite Member
    from NM
    Posts: 167

    Anything is worth a try
     
  7. Exmark PR

    Exmark PR Sponsor
    Posts: 238

    We would advise you not to adjust anything. Please call Exmark Tech Support and ask for Joe at 402-223-6375.
     
  8. Sharpcut 1

    Sharpcut 1 LawnSite Senior Member
    Posts: 450

    Is this a vapor system?? Is your tank mounted correctly so pick up tube is going yo bottom of tank??
     
  9. agm

    agm LawnSite Member
    from NM
    Posts: 167

    It is mounted like you said. I am at a loss here! And the frustrating thing about all this is, here in Albuquerque, I cant find ANYONE who works on this type of unit! Not even the local Exmark dealer works on them!!!!! Tomorrow I guess I will try local forklift repair shops since alot of forklifts are propane powered. I just hope that they will be willing to work on it! I also might consider switching it to gas if it is going to be this much of a pain to get repairs and maintenance done to it!
     
  10. Sharpcut 1

    Sharpcut 1 LawnSite Senior Member
    Posts: 450

    You need to find out if this is a Metro conversion or from Exmark. There is a regulator that needs to be set at a certain PSI. If it is not correct, you're gonna have problems with it. All the units I've been involved with start easier than gas, no choke needed (you should'nt have a choke cable left anyways)
    Go to www.metrolawn.com and see if thats what you got.
     

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