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2002 50hp 4 stroke slow to cold start

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  • 2002 50hp 4 stroke slow to cold start

    My motor is hard to start when cold. I have to crank it as many as 7 or 8 times when it is cold (50 to 80 degrees). I squeeze the bulb until is firm and when it finally starts, it idles rough and does not go to a fast idle. The manual says it has "prime start" but gives no specific instruction other than to simply turn the key. It starts fine when warm if I crack the throttle slightly. The hard start condition has not changed since new.

    Thanks for any help.

  • #2
    Do a forum search for prime start and read up on it or maybe a web search. Sounds like you may have a bad diaphragm or plugged passage in the prime start fuel enrichment system and maybe even the carbs.

    My C40TLRX 2 stroke while cold usually starts on the 2nd 3 second turn of the key and 1st turn after warmed, without raising the throttle at all.
    Last edited by 99yam40; 08-04-2010, 02:30 PM.

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