Help GJ74A GSF250 Ignition coil wiring?

Discussion in 'Suzuki 250cc In-line 4's' started by geemannz, Jan 30, 2020.

  1. geemannz

    geemannz Member

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    Hi all.
    I've recently gotten my bandit back together after stripping it down and refurbishing it. I've gotten to the stage of wiring everything back up, but i've run into an issue where I can't remember which way around the coils are positioned and which spark plugs they are supposed to go to.

    I've currently got the left coil (looking from the rear of the bike) going to the Left and right cylinders, and the right coil going to the middle two cylinders. Im not entirely sure if this is correct.

    Also if anyone has a link to a manual or tutorial on disassembling the carbs, that would be great
     
  2. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    One coil fires cylinders 1 and 4, the other will fire 2 and 3, so what you have sounds correct.
     
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  3. geemannz

    geemannz Member

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    Im just not sure whether I have the left and right coils going to the correct pairs.
     
  4. maelstrom

    maelstrom LiteTek Staff Member Premium Member 250cc Vendor Contributing Member

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    Check the wiring diagram.
     
  5. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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  6. geemannz

    geemannz Member

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  7. GreyImport

    GreyImport Administrator Staff Member The Chief Contributing Member

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    Heres the kit for the carbs

    https://litetek.co/Carb_Kit_Suzuki_GSF250_GJ74A.html

    And there will be detailed schematics of the carbs in the parts list and Im assuming some sort of guide in the workshop manual to overhaul them .... if your not sure on anything just ask here

    https://2fiftycc.com/index.php?resources/categories/gsf250-bandit.33/

    General threads like this will help with some good methods for cleaning etc

    https://2fiftycc.com/index.php?threads/cleaning-carburettors-using-threebond.3800/#post-44739
     
    Last edited: Jan 30, 2020
  8. Brett Cowie

    Brett Cowie Member

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    Does this apply for the gj77a? I'm having the same problem
     
  9. Linkin

    Linkin The Mechanic Premium Member Contributing Member Dirty Wheel Club

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    What problem, exactly?

    Usually, the left coil has a short spark lead and cap for cylinder one, and a long one for number 4. The right coil will have two leads of similar length for cylinders 2 & 3. The leads or caps can be numbered as well, but those have usually worn away from age
     
  10. Vikash

    Vikash Member

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    I'm having a GJ77A Bandit 250V can use the same diagram
     
  11. Vikash

    Vikash Member

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    My GJ77A doesn't start
     

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