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Thread: 225dx questions/rebuild UPDATED with pics!

  1. #1
    Join Date
    Mar 2013
    Location
    Central PA
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    2,362

    225dx questions/rebuild UPDATED with pics!

    So i am currently tearing down the bike for a minor rebuild. Mainly the engine and the rest is cosmetic.
    Question is, i have everything connecting the motor off and out. As in motor mounts, carb, etc. All except the shaft. How do i go about getting it off to take the engine out the best way? Take off the rubber boot and take off them 4 or 5 nuts?

    Reason im rebuilding it is because it smokes like crazy, something is jammed up with the electric starter and it wont disengage. All the other things is external and cosmetic like a new recoil, sanding plastics, repainting exhaust, and a thorough cleaning and fixing some minor electrical problems (When lights on it kills engine), its a mess but its a neat little project learning something new. Use to ATC's.

    Any tips appreciated. I will get more pics up as i work and new questions arise. This is just the plastics and tank off. But hey, you guys like pics.


    So after much work today i got a lot done in my eyes. Motor pulled, exhaust stripped down, painted somewhat but the spray nozzle thing kept clogging up, rear end off, and whatever else i forgot about. BUT I TOOK SOME PICTURES!
    Rear end off


    Back yard engineering, a atv lift.



    What is this? When the engine is running that little pin goes in and out. No idea what it is.



    Prepping for paint, wire wheel in a drill makes it a lot easier than how i usually do it.


    Got the engine out finally, super tight in there.



    Now i have a 3 wheeler in my basement!


    Now on to the motor work. Should take some more pics as soon as its cracked open.
    Last edited by Ghostv2; 08-08-2013 at 09:01 PM.

  2. #2
    Join Date
    Dec 2012
    Location
    Newfoundland
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    140
    Let the clamps off the boot and pull the swing arm...makes life 100 times easier
    1985 Yamaha 200E -ForSale!
    1986 Yamaha 250Dr (beartracker swap)Forsale!
    2009 Sportsman 850Xp
    2014 Renegade 800r
    2011 Dodge Ram

  3. #3
    Join Date
    Jun 2012
    Location
    Aberdeen WA USA
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    139
    Them motors are heavy and in there tight I took the last one out by myself and regretted it. Get help pulling it. And remove the swing arm its not too hard.
    Last edited by Jwmajic; 08-07-2013 at 12:32 PM. Reason: bad gramer

  4. #4
    Join Date
    Oct 2012
    Location
    Somerset County PA
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    720
    Yeah what they said^^ make sure you remove the swingarm and yes moar pics !!!!
    Quote Originally Posted by Howdy View Post
    Yea, looked like a monkey ******* a football. LMAO
    Howdy



    Currently Own-

    84 250R My Baby/Project
    83 Yamaha 225dx
    79 Honda Twinstar - Big Ole Turd

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  5. #5
    Join Date
    Mar 2013
    Location
    Central PA
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    2,362
    Thank you for all the help, removing the swing arm was the ticket. Now i can work on it indoors as it now fits through my basement door.

    Hope you enjoy the pics, learning as i go, never rebuilt a engine before. Or really did any of this stuff. Would really like to know what that pin thing on the engine is for.
    Before i crack open the engine to take a look inside is there anything i should have/do? Im afraid i might have to open up the bottom end too because of those starter problems.

  6. #6
    Join Date
    Aug 2008
    Location
    louisiana
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    1,499
    that little pin is part of the cam chain adjuster and by the looks its way to tight.it should be flush when engine is off.
    Signature pic removed,becuase of no helmet.

  7. #7
    Join Date
    Mar 2013
    Location
    Central PA
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    2,362
    Thanks, now i know what it is at least. Is there suppose to be a cap over it? I have been struggling to find a good manual. Only one i can find is just the normal operators manual, how to ride, change oil, not the stuff i need.

  8. #8
    Join Date
    Dec 2008
    Location
    Monroe MI
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    5,787

  9. #9
    Join Date
    Dec 2012
    Location
    Newfoundland
    --
    140
    that cam chain is toast,they arn't expensive. the bolt should stick out an inch. then theres a lock nut on it ( 24mm) and a plastic bolt (cover) for it.
    1985 Yamaha 200E -ForSale!
    1986 Yamaha 250Dr (beartracker swap)Forsale!
    2009 Sportsman 850Xp
    2014 Renegade 800r
    2011 Dodge Ram

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