Stilling tveggja nála blöndunga

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SETTING A TWO NEEDLE CARBURETTOR

PART ONE - MAIN NEEDLE ADJUSTMENT

STEP 1 - Charge the tank to about 1/3 full only.
STEP 2 - Open the throttle wide and close the needle completely.
STEP 3 - Open the main needle three whole turns from closed.
STEP 4 - Place a finger over the air intake and rotate the propeller 6 times.
STEP 5 - Remove finger and close throttle to one third open.
STEP 6 - Connect glow starter.
STEP 7 - Start engine. (mine actually started really easy up to this point no electric starter)
STEP 8 - Gently (important) open throttle to full.
STEP 9 - Remove glow starter.
STEP 10 - Hold the model nose up at approx 60 degrees.
STEP 11 - Close main needle until engine RPM peaks.
STEP 12 - Open main needle one or two clicks from absolute peak RPM.
STEP 13 - DO NOT TOUCH THE MAIN NEEDLE SETTING FROM THIS JUNCTURE

PART TWO - IDLE NEEDLE ADJUSTMENT

STEP 14 - Close throttle to one quarter (i.e. fast idle).
STEP 15 - OPEN secondary needle one quarter turn.
STEP 16 - WAIT 5 seconds and observe results.
STEP 17 - If idle RPM SLOWS, close secondary needle back to where it was.
STEP 18 - Close secondary needle one further quarter turn.
STEP 19 - WAIT 5 seconds and observe results.
STEP 20 - If engine RPM speeds up then you are moving in the right direction - opening and closing the secondary needle setting until idle speed peaks is your goal.
STEP 21 - Open throttle wide and check response.
STEP 22 - If engine hesitates open secondary needle a LITTLE.
STEP 23 - I engine splutters and and throws fuel droplets from the air intake, close secondary needle a LITTLE.
STEP 24 - Open throttle wide and recheck the MAIN needle setting with the nose of the model raised.