Factory Carburetor Settings

How many times have you been at the field and wished that you knew what the factory setting were for your carburetor.  With the advent of cell phones and tablets, access to web-based information is common everywhere, including the flying field.  The table below has the factory setting for many carburetors.

Send me your data if you want them added to the table.

on gasoline carburetors the high speed needle is typically closest to the carb inlet

CarburetorLow speedhigh speed
DLE 201 1/2 turns open1 1/2-2 turns open
DLE 301 1/2 turns open1 1/2-2 turns open
DLE 35RA1.1 turns open1 1/2 turns open
DLE 551 1/4 turns open1 1/2 turns open
DLE 1101 1/4 turns open1 1/2 turns open
Walbro (on DA-50)1-5/8’s turns open1-7/8’s turns open
Walbro (on DLE-20)1-1/8 turns open1-1/2 turns open
Walbro (Zenoah G450PU)1-1/2 +/- 1/4 turns open1-1/4 turns open
RCGF - (Walbro Clone)1-1/4 turns open1-3/4 turns open
Turnigy TR-26HP1-1/4 turns open1-3/4 turns open
Magnum XL91FSThrottle open, screw out, then 4-1/4 turns closed2-1/2 turns open
Magnum XL70FSThrottle open, screw out, then 4 turns closed2 turns open
Magnum XL61FSThrottle open, screw in, then 2 turns open2 turns open
OS TYPE 20C (on 32SX-H)throttle open, turn until step even with barrel1-1/2 turns open
OS TYPE 20m (on 37SZ-H)screw flush, turn in 1 turn1-1/2 turns open
OS TYPE 20C (on 32SX-H)throttle open, turn until step even with barrel1-1/2 turns open
OS TYPE 1A, 15, 2A, 3A (on FP)air-bleed hole half open1-1/2 turns open
OS TYPE 4BK 4D 5B (on SF)throttle open, turn until step even with barrelnone
OS 50SX, 40 · 46FXthrottle closed, screw in, then 1-1/2 turns out1-1/2 turns open
OS 61FXthrottle closed, screw in, then 1/2 turns out1-1/2 turns open
OS 91FXthrottle closed, screw in, then 2-1/2 turns out1-1/2 turns open
OS 70FSthrottle open, turn until step even with barrel1-1/2 turns open
OS 91FSthrottle open, turn until step even with barrel1-1/2 turns open

 

Carburetor Low speed high speed
DLE 20 1 1/2 turns open 1 1/2-2 turns open
DLE 30 1 1/2 turns open 1 1/2-2 turns open
DLE 35RA 1.1 turns open 1 1/2 turns open
DLE 55 1 1/4 turns open 1 1/2 turns open
DLE 110 1 1/4 turns open 1 1/2 turns open
Walbro (on DA-50) 1-5/8’s turns open 1-7/8’s turns open
Walbro (on DLE-20) 1-1/8 turns open 1-1/2 turns open
Walbro (Zenoah G450PU) 1-1/2 +/- 1/4 turns open 1-1/4 turns open
RCGF – (Walbro Clone) 1-1/4 turns open 1-3/4 turns open
Magnum XL91FS Throttle open, screw out, then 4-1/4 turns closed 2-1/2 turns open
Magnum XL70FS Throttle open, screw out, then 4 turns closed 2 turns open
Magnum XL61FS Throttle open, screw in, then 2 turns open 2 turns open
OS TYPE 20C (on 32SX-H) throttle open, turn until step even with barrel 1-1/2 turns open
OS TYPE 20m (on 37SZ-H) screw flush, turn in 1 turn 1-1/2 turns open
OS TYPE 20C (on 32SX-H) throttle open, turn until step even with barrel 1-1/2 turns open
OS TYPE 1A, 15, 2A, 3A (on FP) air-bleed hole half open 1-1/2 turns open
OS TYPE 4BK 4D 5B (on SF) throttle open, turn until step even with barrel none
OS 50SX, 40 · 46FX throttle closed, screw in, then 1-1/2 turns out 1-1/2 turns open
OS 61FX throttle closed, screw in, then 1/2 turns out 1-1/2 turns open
OS 91FX throttle closed, screw in, then 2-1/2 turns out 1-1/2 turns open
OS 70FS throttle open, turn until step even with barrel 1-1/2 turns open
OS 91FS throttle open, turn until step even with barrel 1-1/2 turns open
Turnigy TR-26HP 1-1/4 turns open 1-3/4 turns open