fixing tachometer on '81 CM400T
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  1. #1
    Member Don G.'s Avatar
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    fixing tachometer on '81 CM400T

    I think I found my off-season project.

    I bought an '81 CM400T in very nice shape except for the tachometer. It works fine, but the two screws holding the dial face inside the housing came loose and now the face is floating around in there loosely. I found a couple of articles explaining how to possible open up the housing to re-attach the screws, and while it looks to be a bit of a pita, it looks doable. Optionally, I could keep my eyes open for a salvage tach, but either way it means removing this one. BUT...could it be that the only way to remove the tach is to remove the headlight, which apparently also means removing the turn signals?

    Has anyone here done something like this and it it going to be as much of a pain as it seems like it's going to be? Any words of wisdom before I attempt such an endeavor?

    Thanks in advance.

    fixing tachometer on '81 CM400T-img_2722.jpg

  2. #2
    Super Moderator longdistancerider's Avatar
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    There's 2 chrome acorn nuts holding it to bracket. Depending on your hand/finger size and co-ordination you may be able to sneak them out to remove the tach. Otherwise yeah, remove the headlight
    Jim O'Brien
    1979 CM400T "road bike" modified for travelling
    1978 CB400T1 restored
    1972 CL350 nuts and bolts restore in progress


    https://www.hondatwins.net/forums/22...d-attempt.html and https://www.hondatwins.net/forums/1-...r-attempt.html
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  3. #3
    Member Don G.'s Avatar
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    Thanks for the reply. I don't think it's so much finger size and coordination or dexterity. The problem seems to be that the acorn nuts are pretty much resting on the headlight housing, so there's no real room to back them off.

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  5. #4
    Senior Member Alan F.'s Avatar
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    It wont be that bad to remove turn signals and headlight bucket. Just take photos and notes before each step so you can put it back correctly.
    CB250 Nighthawk projects 92,93,92.
    81 CM400C Sold
    93 CB750 Nighthawk Sold
    73 CB750K3 Long term project stuck in the 'parts collecting stage.'
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  6. #5
    Member Don G.'s Avatar
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    Ah, yes...photos and notes. Good idea. I usually remember that after I've already removed everything.

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