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  1. #1

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    After Run Oil into a 4 Stroke

    Bax,

    What is the proper way to inject after run oil into a 4 stroke engine?
    Most carbs seem to be pointing down. Not as easy as a 2 stroke.

    How much oil should be injected?

    If the engine is cowled, are there alternate methods that can be used?

    May I reprint part or all of your sticky on use of after run oil in our clubs newsletter?

    Thanks for your help!

    Sincerely,

    KW_Counter

  2. #2
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    RE: After Run Oil into a 4 Stroke

    You inject after-run oil through the crankcase breather. You do not go through the carb.

    1-2 tablespoons' worth would be plenty.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com

  3. #3

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    RE: After Run Oil into a 4 Stroke

    If I inject through the breather will the oil get up to the valves?

    Thanks,
    KW_Counter

  4. #4
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    RE: After Run Oil into a 4 Stroke

    Oil will work its way to the valves if you move the engine around while you turn the propeller. Eventually, some will get there...or you could remove the rocker cover and apply it directly. Usually, though, getting after-run oil to the valves isn't as important as getting it to the bearings. The bearings are what corrode fastest.
    Bill Baxter, Manager Hobby Services/Futaba Service/North America
    3002 N. Apollo Dr. Ste. 1 Champaign, IL 61822 USA
    Service Phone: 217 398-0007
    Email: hobbyservices@hobbico.com


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