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Thread: 400ex oil?

  1. #1
    Join Date
    Aug 2009
    Posts
    90

    400ex oil?

    just got a 400ex. need to know how much oil it suppose to hold. and does it all just go into the oil resovar in the front? thanks

  2. #2
    Join Date
    Apr 2005
    Location
    WI
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    2 quarts if doing the filter too.

    you have to do the tank drain, the oil filter, and a plug underneath the shifter.

    http://www.atvriders.com/articles/oilchange400ex.html


    steve
    2019 Maverick X3 XDS Turbo R
    2003 TRX 400EX
    2016 HONDA RANCHER

  3. #3
    Join Date
    Apr 2005
    Location
    WI
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    http://www.atvriders.com/articles/index.html


    ^^^^there are some other good 400ex articles also including valve adjustments.




    http://www.sendspace.com/file/wcy9is

    ^^^ manual download which is a good thing to have around also. it shows anything that needs to be done to a 400.

    enjoy! steve
    2019 Maverick X3 XDS Turbo R
    2003 TRX 400EX
    2016 HONDA RANCHER

  4. #4
    Join Date
    Aug 2009
    Posts
    90
    so 2 quarts will be fine? do i put it straight in the oil resovar?

  5. #5
    Join Date
    Apr 2005
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    WI
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    yup, just put 1 qt in and start it up for about 20 seconds or so. then add the other qt to it. the res tank wont take all 2 qts at the same time without getting some pumped back into the engine. steve
    2019 Maverick X3 XDS Turbo R
    2003 TRX 400EX
    2016 HONDA RANCHER

  6. #6
    Join Date
    Oct 2009
    Location
    Somewhere in Texas
    Posts
    3,135
    Originally posted by yz2stroke
    so 2 quarts will be fine? do i put it straight in the oil resovar?
    Yep, you got it!
    Slightly Bent Racing # 47
    400ex with some stuff
    You shouldn't be concentrating on how fast your bike is.
    You should be concentrating on how well you can ride it.
    Never ride over your skill level and Never ride over the abilities of your machine.

  7. #7
    Join Date
    Aug 2008
    Location
    Central NJ
    Posts
    11,326
    I put in about 1.5 qts, then I like to hit the kill switch and crank it over a few times so it pumps the oil into the engine before starting it.

    Then let run a min, and add the last 1/2 qt.
    If it's stupid, and it works, it isn't stupid. - Murphy's Law
    2000 426EX,sold
    2004 450R WIP
    -Longtime A.A.D.S. (Accessory Acquisition Disorder Syndrome) sufferer.
    400EX Frequently Asked Questions, CHECK HERE FIRST!

  8. #8
    Join Date
    Aug 2009
    Posts
    90
    ok thanks guys appreciate it.

  9. #9
    Join Date
    Mar 2010
    Location
    Westmoreland county,PA
    Posts
    479
    Be careful not to over-tighten the plug on the botton of the oil tank, sucker breaks easy.
    99 400ex-very clean (Sold)
    -protaper s/e bars w/handguards
    -DG slip on pipe
    -uni air filter
    -DG fat series nerfs
    -R/A rear tires
    -Tether kill switch
    -Stage 1 Hotcam
    -soon to be 11:1 416
    xboxlive-boxsatchel24

  10. #10
    Join Date
    Aug 2008
    Location
    Central NJ
    Posts
    11,326
    Originally posted by 99400esex
    Be careful not to over-tighten the plug on the botton of the oil tank, sucker breaks easy.
    or the ones on the case where the filter is.

    Use a 1/4 drive ratchet and grip the head in your palm. 8 ft-lbs iirc.
    If it's stupid, and it works, it isn't stupid. - Murphy's Law
    2000 426EX,sold
    2004 450R WIP
    -Longtime A.A.D.S. (Accessory Acquisition Disorder Syndrome) sufferer.
    400EX Frequently Asked Questions, CHECK HERE FIRST!

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