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CJ750 toolbox |
Repairing a missing slide
guide in a Mikuni copy by Richard Cook |
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I had the float stick in one of my Mikunis
which caused me to inspect it. I was surprised to see the
lower slide guide missing. My engine must have eaten it;
luckily it is nylon or some kind of plastic. This could
cause your throttle to stick. |
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I believe someone posted on this issue
before with a Bing copy and they used a brass woodscrew
if I recall correctly. I masked the inside of the carb
off with blue masking tape to keep chips out of the jets.
This will save you a lot of cleaning up so dont
skip this step. |
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I decided to use a brass screw that is left
over from a TV repairmans yard sale kit I bought
years ago. It is just a bit larger than the outer part of
the slide guide hole. The inner part is oblong and they
must mold the guide in place as you can see the little
lower guide in the picture. |
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I drilled out the oblong part of the hole to
the same diameter as the outside part. Then I cut down
the screw I used to just be a bit longer than I needed. I
measured the screw and selected a tap to fit. After
tapping the hole I checked it with the screw to make sure
I had a fit. |
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Then I filed the end of the screw down to be
just under the diameter of the slot in the slide. My
theory was that by using a screw I could easily adjust
for depth and to make sure the guide was exactly
vertical. |
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After a test fit I put blue Locktite on the
screw to seal it and hold it, I used blue in case I
needed to readjust it. I then ran the slide back and
forth to check the fit and it is working fine. I let the
Loctite cure and then fitted the carb. It seems to be
working well and perhaps Ill do the same to the
other carb to be sure. |
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