Evinrude 4906B 4HP 1969 Owner's Manual page 111

4-20 FUEL
New type packing used for the low-speed
valve. A packing nut is not used to hold the needle in
adjustment.
20- Place a white plastic
the high- and low-speed cavities. If a high-
speed orifice is used, install the orifice with
the proper size screwdirver until the orifice
just BARELY seats.
the orifice plug, and then the plug.
21-
Start the two sleeve nuts into the
carburetor, but ONLY far enough to allow
the needle valves to be installed.
22- Install the high-speed needle valve
into the bottom cavity
CLOCKWISE. Allow the needle valve to
sea t LIGHTLY, then back it out (COUNTER-
CLOCKWISE) 3/4 turn.
sleeve nut only until it is difficult to turn
the needle valve by hand.
23- Install the low-speed
into the upper cavity in the same manner as
the high-speed needle
After the valve is seated
cut (COUNTERCLOCKWISE)
Now, tighten the packing nut until there is
drag on the needle valve, but the valve may
still be rotated by
little difficulty.
needle
washer into
Install a new gasket on
by rotating
Now, tighten the
needle valve
valve in Step 22.
LIGHTLY, back it
1-1/2 turns.
hand, but with just a
it