Accelerator pump

Discussion in '40- & 55-Series Tech' started by azlar, Aug 15, 2005.

  1. azlar

    azlar

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    Picked up my first cruiser the other day, 71 FJ-40. Runs pretty strong but a few days ago it would'nt start until I hit it with some starting fluid.

    A peek down the carb revealed that the accelerator pump wasn't pumping. So I pulled the top of the carb off and inspected the pump plunger. The leather gasket was pretty worn and had curled back in one spot. I uncurled it and re-inserted the plunger. Worked it gently by hand and could move some gas, but as soon as I put the carb top back on it was good for only a couple pumps before failing again.

    Is the leather plunger part of a carb rebuild kit? The carb is pretty dirty, but other than the accel pump doesn't really need a full rebuild right now.

    Also, my Haynes (don't have an FSM yet) shows a spring under the pump. Mine didn't have one, operating solely by the linkage. Is this a big deal?

    TIA
     
  2. Degnol

    Degnol

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    All the kits I've used have had an entire new accelerator pump. Yes there is a spring that's suppused to be there. The carb just may be gooped up, the check ball rusted or stuck to the bottom of the acc pump chamber. Just get a good kit abd some Berryman's and rebuild it.

    GL

    Ed
     
  3. andrewfarmer

    andrewfarmer

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    Fuel miser part AN103PP for just the pump
     
  4. azlar

    azlar

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    Thanks for the info. Glad to hear that the pump is available by itself, but I think I'll go for a whole rebuild kit and just get it over with. Now i just need to find a spring.
     
  5. Robert LaDuke

    Robert LaDuke

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  6. Degnol

    Degnol

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    Ive got a pump and a spring, I think. I have to go out and check. Where are you? But you might as well get a kit.


    Ed
    Kansastitty
     
  7. azlar

    azlar

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    I was just about to pull the trigger and get the kit, but saw SOR had one kit for 10/69-9/71 carbs, and one for 10/71-9/72. the pictures looked pretty identical to me. I'm guessing a difference in jet sizes or something?

    My Cruiser is a "71", which kit do I go for, or is there some numbering on the carb itself that would give me a hint?
     
  8. azlar

    azlar

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    Oh yeah, I'm in Tucson and itching to get out and do some desert driving.
     
  9. Robert LaDuke

    Robert LaDuke

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  10. Degnol

    Degnol

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    '69 was a strange year for carbs. You might want to take a pic of the carb and post it.


    Ed
     
  11. azlar

    azlar

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    Great link. Looks like my production month was around 7, so I'll go for the earlier kit

    I'll post a picture, but the numbers off the top of the carb are "1B5 ISO". I'm guessing it's stock, but there's been a lot of opportunity for change in the last 30 years or so.
     
  12. cruiseroutfit

    cruiseroutfit Supporting Vendor Moderator

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  13. FJ40Jim

    FJ40Jim The Cruiser Whisperer SILVER Star

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    FWIW, the date code translates to 1971 Feb 5th.
     
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