How to Return the needle settings on a HBI 21BB engine

In this video tutorial, viewers learn how to return the base settings on a HPI 21BB engine. The engine has 3 needles carburetor: high speed, mid-range and low speed. Begin by turning the high speed needle clockwise until it is closed. Then turn it 3 1/2 turn counterclockwise. Then turn the mid-range needle clockwise until it is closed. Then turn it 3 1/4 turn counterclockwise. When adjusting the low range, make sure to hold the mid-rang with a screwdriver to prevent it from turning. Now turn the low range needle clockwise until it is closed. Then turn it 3 1/2 turn counterclockwise. This video will benefit those viewers who have an HPI 21BB engine, and would like to learn how to return it to the needle settings.

Video not playing properly? Click here to see the original video