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  1. #71
    MSX 150 guy lives on Mr. GP1800's Avatar
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    I had the lock nut on one of my bolts too. I used a open end wrench on the flats of the nut plate.

  2. #72
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by BryanP View Post
    ... I used a open end wrench on the flats of the nut plate.
    Was that while your Matrix upper deck was not yet bonded to the hull?

    I had trouble just getting my fingers up to that area, let alone getting a wrench in position.

  3. #73
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Quote Originally Posted by K447 View Post
    Quote Originally Posted by BryanP View Post
    ... I used a open end wrench on the flats of the nut plate.
    Was that while your Matrix upper deck was not yet bonded to the hull?

    I had trouble just getting my fingers up to that area, let alone getting a wrench in position.
    Nope. It was on the 140. I have special Gumby skills.

  4. #74
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Quote Originally Posted by K447 View Post
    Quote Originally Posted by BryanP View Post
    ... I used a open end wrench on the flats of the nut plate.
    Was that while your Matrix upper deck was not yet bonded to the hull?

    I had trouble just getting my fingers up to that area, let alone getting a wrench in position.
    I didnt have to take the steering off the matrix. Just put it on.

  5. #75
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by BryanP View Post
    Quote Originally Posted by K447 View Post
    Quote Originally Posted by BryanP View Post
    ... I used a open end wrench on the flats of the nut plate.
    Was that while your Matrix upper deck was not yet bonded to the hull?

    I had trouble just getting my fingers up to that area, let alone getting a wrench in position.
    I didnt have to take the steering off the matrix. Just put it on.
    Did you put the extra lock nut under that steering stop bolt?

  6. #76
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Nope

  7. #77
    Click avatar for tech links/info K447's Avatar
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    Quote Originally Posted by BryanP View Post
    Nope
    Might be worth adding the locknut.

    That particular bolt gets whacked every time the handlebars are turned against the stop, left or right.

  8. #78
    Click avatar for tech links/info K447's Avatar
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    Removing the Ficht fuel pump from MSX 140, steering already removed

    Carrying on ...


    Clear away the sundry electrical cables, vent hoses. Take photos and make notes about where things were. Also pay attention to the wire harness colors at each connector. There are a couple of identical connectors nearby that are used for different things.

    The MSX 140 has a rather long hose between the vent fitting on the fuel pump and the actual hull vent. The length may have made factory assembly easier but I think the excess hose is unnecessary and may hold liquid gasoline in the droops.
    I made the vent hose much shorter during reinstallation.


    Ugh, dirty, dirty, dirty!
    Remove the vent hose by squeezing the blue tabs then slide the vent connector off.
    Remove the hose clamps on the fuel pressure and return hoses, then remove the hoses.
    Take care not to stress the plastic hose nipples, the plastic is semi fragile if you man handle them.

    Unscrew the giant retaining ring. I used a large flat screw driver and applied steady strong pressure against the perimeter ribs, slowly turning the ring. Eventually it loosens.
    Using a large sink drain wrench also looks effective.

    https://www.amazon.com/Superior-Tool.../dp/B000VJU3A2
    Quote Originally Posted by jajardas View Post
    ... I used a sink drain wrench to loosen and tighten the large ring nut on the gas tank.
    Like this http://www.plumbersurplus.com/Prod/S...ivsaAgGQ8P8HAQ

    ...


    When lifting off the big ring, take care to not catch it in the fuel hose nipples or the electric connector.


    Wiggle the fuel pump top until it pops up a little (the pump body has a large spring) then you can start lifting it out. There is a rubber sealing ring around the rim. It will probably come out with the fuel pump.

    When the fuel pump is about 50% out you must rotate it 180 degrees. The fuel level float arm normally is facing the rear of the tank. Rotate the pump 180 degrees so the float arm is facing forward inside the tank. Now when you tilt the pump forward and continue lifting the sender arm and float should not get snagged or damaged.


    The fuel tank was fairly clean inside. You can see how little fuel remained in the tank. The gasoline was pumped out using the just the electric fuel pump running with a manual override switch.
    The small amount of dirt in the center crevice was mopped out later before the fuel pump went back in.


    And there is the damn pressure regulator, lying in the bottom of the fuel pump body!

    While it often drops down inside the fuel pump, the regulator can also bounce out into the fuel tank when it finally lets go.
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    Last edited by K447; 08-24-2018 at 09:55 PM.


  9. #79
    MSX 150 guy lives on Mr. GP1800's Avatar
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    Where is the regulator? Mine was laying in the bottom of the fuel tank.

  10. #80
    Click avatar for tech links/info K447's Avatar
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    Remove the large outer seal from the pump top. Clean it and set it aside.


    Click image for larger version. 

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    Before trying to pry the hose nipple fitting out of the fuel pump lid, drip some 2-stroke oil around the inside rim of the rubber seal. Wiggle the fitting around so the oil can seep down the sides.
    Next, warm up the rubber using a heat gun set to low heat. Warm both top and bottom sides of the rubber seal. Do not over cook things, just warm it enough to modestly soften the rubber.

    Click image for larger version. 

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    I then used a large flat blade screw driver and some gentle prying to lift the plastic piece out of the rubber seal. Be careful not to crack the plastic or spear yourself.

    Click image for larger version. 

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    Since I had Oetiker hose clamps of the correct sizes, I cut the feed hose off just below the remaining metal nipple.

    Click image for larger version. 

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    You can see how minimal the ridge is on the pressure regulator fitting where it was inserted into the plastic.

    The weight of the regulator swinging around while riding eventually works the fitting loose in the plastic and it falls out. Boom goes the engine!
    Last edited by K447; 07-18-2014 at 12:19 AM.

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