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zepher500percy

Joined:

Dec 12

Posts: 1

zepher550 fule/air mixur screw and stop screw setings

need help ore shuld i say a starting point

what should the settings be on a zepther 550

for the air / fule mixture screw and the stop screw ?

it wold be good to get some help on this ,

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  • Posted 2 years ago (19 December 2012 04:04)

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smidget

Joined:

Nov 07

Posts: 2411

smidget says:

Hi zepher500percy

Stop screw, back off till no movement of throttlke butterfly, then turn inward till you start to get movement of butterfly, then adjust as required from there.

Fuel mixture screw setting I am not sure of but I would try as follows.

Screw in till stop, do not use force, then back out one and a half turns, if engine does not show any sign of firing I would back out, then a further quarter turn until you reach three full turns out. You should not really need to go the full three turns, if you do I would suggest checking other reasons for a none start.

Hope that helps a little. 

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