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Thread: 2001 FatBoy Engine Oil Drain Plug (s)

  1. #1
    Junior Member Biker MikeGV's Avatar
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    2001 FatBoy Engine Oil Drain Plug (s)

    I have the service manual for my 2001 FatBoy, but I want to ask this question just to make sure I am not missing anything.

    How many drain plugs are involved with draining the engine oil? Just the engine; I've done the primary already (M6 install) and the transmission.

    I want to change the engine oil, and all I keep reading about in the service manual and the posts is the frame mounted plug that comes down from the oil resivoir.

    I know there are casting plugs etc. to watch out for. Is the only plug for changing the oil the one that comes down from the oil resivoir?

    Thanks in advance!

  2. #2
    Administrator AdminSenior Member Wide's Avatar
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    Re: 2001 FatBoy Engine Oil Drain Plug (s)

    Your correct, one plug

    The casting plug is not to be removed, it's the recessed allan one
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  3. #3
    Senior Member Senior Member xxxflhrci's Avatar
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    Re: 2001 FatBoy Engine Oil Drain Plug (s)

    Just remove the one from the oil tank drain line. Do not remove any of the casting plugs from the engine case. More than one case has been cracked from guys messing with those plugs.

  4. #4
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    Re: 2001 FatBoy Engine Oil Drain Plug (s)

    I removed the casting plug by accident once on someone elses bike. oooops.
    I did however need to remove it from my softail to check and make sure I wasn't wet sumping. Yeah, I took all the precautions, a warmed up bike, a heat gun to the alen, and a prayer before I started to twist.
    Things worked out fine, but don't take that one out unless you can and want to buy new cases.
    Never fight with a fool, others may not be able to tell the two of you apart.

  5. #5
    Junior Member Biker MikeGV's Avatar
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    Re: 2001 FatBoy Engine Oil Drain Plug (s)

    I appreciate the input from everyone, especially so quickly.

    I wish the shop manual just said somewhere "no drain plug under engine". But where the manual fails my good friends here in the forum help!

    Now that I see how oil changes work on the bike, I can understand why I've heard people talking about the scavenger etc. It seems to me that somewhere around a half quart or so is left in the block with an oil change.

    I also realise theres more than that in the engine of most cars even after they drain.

    Does anyone know why they made the TC this way? (no conventional drain under engine?).

    A friend says his Evo has a "normal" drain plug".

  6. #6
    Senior Member Senior Member Dr.Bob's Avatar
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    Re: 2001 FatBoy Engine Oil Drain Plug (s)

    A 5/8ths socket fits it.
    Before modern times there was walking, but not the perfection of walking, because there was no tea.

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