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Thread: Crank seal replacement

  1. #1


    Default Crank seal replacement

    What kind of job to split crank case on 78 et250? I've done seals on other sleds but not an et with the vertical case. Do I need any special tools? Any help/tips would be great. Thanks.

  2. #2
    Senior Member Improved RON HYDRAULIC YAM's Avatar
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    Nov 2005
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    Mount Albert , Ont
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    Default

    had a look at a parts catalog .... same pain as most ... removal of clutch and flywheel .... screws appear to behind flywheel .... after they come out , tap with mallet around the case halves
    until they separate ... don't jam a wedge in between casings as it is a polished fit with a fine film of sealant and screwdriver gouges are a bad thing... two of the holes have dowel pins
    as well to keep things square ...
    http://www.boats.net/parts/search/Ya...DER/parts.html
    ...
    I like this site
    Ron
    Collecting Hydraulic drive Yamahas
    72 EW643,73 EW643,74 TL433, TW433, 75 TL433
    76 PR440, 77 PR440..7 models from 6 years

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