Specifications

It is important to follow all linkage and lever installation instructions. The number one and two
reasons for tuning errors are improper linkage installations and over tightened linkage nut,
causing a binding in linkage assembly.
CALIBRATIONS MAY VARY DUE TO REGIONAL FUELS AND STATE OF ENGINE TUNE
AND PERFORMANCE. POOR RUNNING QUALITY DOES NOT MEAN A DEFECT IN THE
CARBURETOR. AN ADVANTAGE OF THE WEBER CARBURETOR IS ITS EASE OF
ADJUSTMENT AND TUNING.
SET UP ADJUSTMENTS
Start set up by confirming carb base line settings. Do not depend on the factory delivered settings.
Check them before the carb is installed.
1. All settings are done with choke disengaged or warmed up so that the choke is fully opened
and disengaged. This is done on automatic choke carburetors by first opening the choke
butterfly by hand and inserting a wood block or wedge of some kind to hold open while the
linkage is cycled (linkage operated through its full movement) to clear the choke cam. (You
will hear a metallic click as the cam is released. You can check the fast idle screw under the
choke assembly to confirm that it is not in contact with the choke fast idle cam.)