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1983 Yamaha Maxim 750 dies when put into gear

Discussion in 'XJ Technical Chat' started by Nathan Drew Cook, Apr 12, 2021.

  1. Nathan Drew Cook

    Nathan Drew Cook New Member

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    Alright guys I cannot seem to figure this one out... I think it might be a sensor but you guys might have a better clue. I bought this XJ750 in great shape. Ran when parked. I cleaned out the carb (that was a hell of a process) and get it running and idling. I get it running in neutral then the moment I put it into gear it dies. The clutch is in and engaged. It does not jump or grind gears. It just dies. I thought it might be the kickstand sensor but I do not know if that is how they work. Do you guys have any guesses?
     
    Nathan Drew Cook, Apr 12, 2021
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  2. Dan Gardner

    Dan Gardner Well-Known Member Premium Member

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    I guess it would make sense that the kickstand sensor was faulty or otherwise not working correctly - if it thought that the kickstand was deployed even if it wasn't.
     
    Dan Gardner, Apr 12, 2021
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  3. bensalf

    bensalf Well-Known Member

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    sounds more like the clutch lever switch, you should be able to start and run the engine in gear if the clutch is pulled in------ like if you stalled it at traffic lights , you should be able to start in gear with clutch pulled in.
    like wise, if the clutch switch is faulty, when you put it in gear, engine cuts out
    stu
     
    bensalf, Apr 12, 2021
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  4. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    My clutch switch is currently faulty. The only thing that I can't do is start the bike while in gear.
    The side stand switch kills the bike when in gear as if the stand was down, regardless if the clutch switch is faulty or not.
     
    k-moe, Apr 12, 2021
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  5. XJ550H

    XJ550H Well-Known Member Premium Member

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    kick stand switch try cleaning it with spray and you do have sidestand up when you put it in gear correct?
     
    XJ550H, Apr 12, 2021
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  6. k-moe

    k-moe Pie, Bacon, Bourbon. Moderator Premium Member

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    Exactly that ^^^^
    My last post was on a cery short break at work, so I couldn't elaborate.

    I clean the sidestand switch by peeling the rubber boot off (the rearmost one), spraying contact cleaner onto the base of the plunger while I work it in and out by hand until it moves freely. Then I follow up with a dry-film silicon lubricant. This is an annual event.
     
    k-moe, Apr 12, 2021
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  7. Nathan Drew Cook

    Nathan Drew Cook New Member

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    I’m on it!! Thanks guys.
     
    Nathan Drew Cook, Apr 12, 2021
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  8. cgutz

    cgutz Well-Known Member

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    My side stand switch periodically fails and the result is what you are experiencing. If I am out and about, I have to reach down and "pull" the side stand switch out all the way (sometimes a light "kick" with my heel is enough). Then it usually runs. When I get home, time to clean the switch....
     
    Last edited: Apr 13, 2021
    cgutz, Apr 13, 2021
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