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Thread: Yamaha 225 question!

  1. #1
    Join Date
    May 2004
    Location
    Saskatchewan
    --
    11

    Yamaha 225 question!

    okay, I'm new to this three/four wheeler stuff, but anyway.. on my yamaha 225DX motor thier is a increase/decrease adjustment screw loacated under and by the dipstick for the oil! What is it, and what does it do? mine is seized up! is it to do with the tranny? why I'm wondering this is cuz my tranny has been slipping in and out of Gear! I've been told to find out what the increase/decrease screw is first before I tear it apart!
    My Rides:

    1984 Yamaha 225DX Shaft Trike
    1990 Ford 5.0 Half-Ton
    1986 Ford Mustang 5.0 Notch Back

  2. #2
    Join Date
    Sep 2002
    Location
    Ithaca, NY
    --
    2,596
    that screw compensates for worn or wearing clutch discs. There should be a locknut on it. get a manual for it, and it will 'splain it to you.
    Haspin veteran '02, '03, '04, '05

    "Hey is your dash-cam on? Are we gonna be on C.O.P.S?"

    RECOVERING Trikeaholic

  3. #3
    Join Date
    May 2004
    Location
    Saskatchewan
    --
    11

    Thanx

    Awsome, I totaly understand what you mean!!! . like I said my tranny is slippin' so I'm guessin that I'll need to adjust the screw! the only thing is its seized in thier. I got another 225 motor in my garage, and the screw moves perfectly in or out, so what would you do to unseize it? I don't want to snap it (someone already striped the screw a bit). so...... I think I'll take it apart and soak it with WD-40 or somethin! but thanks for the info!!!!!!!!!!!!!!!!!!!
    My Rides:

    1984 Yamaha 225DX Shaft Trike
    1990 Ford 5.0 Half-Ton
    1986 Ford Mustang 5.0 Notch Back

  4. #4
    Join Date
    Aug 2003
    Location
    Eugene,Oregon well close to it
    --
    95
    one quick question what kinda oil do you put in the shaft axil thingy.

  5. #5
    Join Date
    May 2004
    Location
    New Zealand
    --
    129
    Hypoid gear oil.....SAE80

  6. #6
    TheOlderFox's Avatar
    TheOlderFox is offline At The Back Of The Pack Arm chair racerAt the back of the pack
    Join Date
    Dec 2003
    Location
    Black Creek, WI
    --
    299
    First, try to loosen the nut/screw up with a little penetrating oil. If it won't budge swap the covers between the two engines. The adjuster will help take the wear out of the clutch so it will stop slipping. Right now I am thinking to adjust, turn the screw toward increase until it is snug then back it off 1/8 then tighten down the lock nut. I am not positive about this and can check the book later, but I would recommend that you get one ifyou don't.
    Anyone know of a new project machine for me around Wisconsin?

  7. #7
    Join Date
    Apr 2003
    Location
    HARTFORD CT, USA
    --
    478

    Talking

    old fox has it right.
    PB blaster is the skoaking oil of choice to loosen that nut/screw up.
    good luck.
    'WHEN IN DOUBT.........GAS IT!'
    87 KXT250B2 Tecate
    86 ATC250ES BIG RED
    85 ATC350X
    85 ATC70
    'A FEW IN PARTS'

  8. #8
    atckowalski is offline Formerly "aaakowalski" Arm chair racerJust too addicted
    Join Date
    Nov 2002
    Location
    Northern Mi.
    --
    516
    I would remove the side cover then you should have a better chance to remove it without breaking anything.Be sure that you do not ruin the side cover gasket if you do remove it.
    1985 Ytm 225 dr (Black and gold)
    1984 Kxt 250 A1 Tecate
    1981 KLT200a1
    1983 Yt 175
    1985 Atc 350x
    1983 Klt 200 C
    1985Ytz250 Tri z

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