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Xj650 maxim.wont start in winter!

Discussion in 'XJ Technical Chat' started by Gary Brown, Jan 12, 2018.

  1. Gary Brown

    Gary Brown New Member

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    Hi,I have a trike with a xj650 maxim engine.
    The problem is its the yics engine and the previous owner has put on the carbs from a standard maxim (not yics)
    It wont start in winter,and takes a while to warm up in summer!do these carbs need rejetting?carbs have sponge filters on.
    Any help gratefully received!!
     
  2. Jetfixer

    Jetfixer Well-Known Member

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    YICS should not matter , sounds like your carbs need to be taken to church , Start there you will need to pull carbs off and break the rack while doing this replace the butterfly seals . You will need to soak the carbs to do full clean , this is reason butterfly seals need replaced soaking will destroy seals. The float bowls have a tiny enrichment jet that cannot be removed this is usual cause of hard starting , a piece of .20th safety wire or an equivalent guitar string and some carb cleaner is all you need to do , usually gets this back in working order.
     
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  3. Gary Brown

    Gary Brown New Member

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  4. Gary Brown

    Gary Brown New Member

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    Hi,thanks for that.
    It did run in summer but since we've had cold weather it just wont start!
    I will try what you suggested though.
    Many thanks!
     
  5. hogfiddles

    hogfiddles XJ-Wizard, Host-Central NY Carb Clinic Moderator Premium Member

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    Charge the Battery good.

    If the carbs are 1980, the enricher well jet IS removable
     
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  6. k-moe

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

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    YICS carbs were jetted a tad leaner than non YICS carbs, which should make cold starts easier in your case.
    A good cleaning is in order (including new throttle shaft seals if they have not already been replaced).
     
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  7. Polock

    Polock Well-Known Member

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    you'll find the heater won't work either :)
     
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