Re: my qt50

mikehailwood /
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First, is that the float needle valve and why did you need a new needle valve? Check the obvious: throttle cable moves freely in the casing (no kinks or corrosion), slide holding the needle moves smoothly within the carb body (must be clean and it sometimes helps to smear a little gas on the slide to help lubricate it) and carb must be clean internally paying particular attention to jet passages, Also, is the float clear of any obstructions which might prevent it from mving up and down freely?

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