1990 3ln exup - just bought

Discussion in 'Yamaha 250cc In-Line 4's' started by Dave71, Jul 25, 2009.

  1. Dave71

    Dave71 New Member

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    hi guys,

    I'm from toronto, i just bought the 250rr that nuak ( a jdm importer in the area) was selling.
    the bike, runs fine, sounds fine.

    But I want to do a quick run through of the system before I actually ride it. The link to download maintenance manual for fzr250 doesn't work anymore, I just want to know what's the torque spec for the engine oil drain bolt.

    The list of things that I'm gonna do this weekend:

    -replace the brake fluid, for the front brake. The front brake feels a bit soft and it suprised my friend how he can't brake fast enough.
    -full the gas tank up and empty it, empty the fuel
    -replace engine oil

    gladly i've got a shop to do this in <!-- s:D --><img src="{SMILIES_PATH}/icon_biggrin.gif" alt=":D" title="Very Happy" /><!-- s:D -->

    this bike has after market parts, braided brake line... a digital temp display...
    brambo master cylinder for the rear brake. and the dunlop tire looks beautiful.

    any suggestion?
     
  2. dave

    dave Well-Known Member

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    Luckily I have a copy on my PC and I will have them uploaded on the site soon.

    The fzr400 sump plug torque setting is 43nm 31lb/ft and in the fzr250 (Japanese only) there is a reference to 4.3kg/m (43nm) in the oil change section.

    Your bike has 2 front rotors (3LN onwards), and with braided hoses the brakes should be reasonable, are the brakes spongey?? could have air trapped in the system somewhere??
     
  3. dontz125

    dontz125 Active Member

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    Hi, Dave71.

    Yeah, I'm surprised he doesn't move more of them - they're great little bikes!

    I agree with (other) Dave - if you can't lift the rear wheel, either your system is full of bubbles, or one or more pistons is seized. When you flush your brakes, get in there with an old toothbrush and some Brakleen and scrub the pistons (take the pads out first).

    Whereabouts in Toronto are you?
     
  4. okee

    okee New Member

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    Congratulations on your new bike , best of luck with it. Post up some pics. Brembo rear master cylinder is stock, think Yamaha used to own Brembo at one stage.
     
  5. Dave71

    Dave71 New Member

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    lol i hope not, cuz me and my friends ( lol 2 of them) didn't see any thing leaking when the bike was being ridden.

    the soft brake problem could just be that i need new brake fluids in, i'm gonna bleed the brake properly too, i hope it's gonna solve that problem. because according to the friend who rode the bike for me, he said that the state the front brake is in, he will not be comfortable enough to ride it on highway.

    and also i'm wondering if any of you guys here actually service the engine as the manual says. since the manual is in jap how did you guys do it? i've got quite some experience servicing motorcycle engine, and i would like to do these things myself. it really makes no difference if a mechanics do it, or you do it yourself if you follow the manual. If fact you'll probably be more comfortable with the bike knowing what you've done.

    i'm from etobicoke~
     
  6. dontz125

    dontz125 Active Member

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    'Air in the lines' does not necessarily mean a leak anywhere, especially on a bike that's been stored or transported - and this was both! Especially if it was laid on its side for any reason (prep for shipping...), the air at the top of the MCyl reservoir can migrate into the mcyl itself, and into the banjo bolt.

    Flush your lines, give it a damn good bleeding. Wrap a rag around the mcyl banjo bolt, squeeze the lever, and *crack* the banjo; as the lever slowly comes back to the bar, you'll probably see a few little bubbles. Tighten everything back up. It often helps to let the system sit over night - tie the lever back to the bar. This allows bubbles to coalesce, making them easier to bleed out.
     
  7. dave

    dave Well-Known Member

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    Japanese FZR250 manuals uploaded to FZR250 site and new links established.. <!-- l --><a class="postlink-local" href="http://fzr250.com/viewtopic.php?f=20&t=2889">viewtopic.php?f=20&t=2889</a><!-- l -->

    Read in conjunction with the english FZR400 as there a lot of similarities...
     
  8. Dave71

    Dave71 New Member

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    thanks alot!
     

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