TM 5-4240-501-14&P
Checking Float Level
With body gasket in place on upper body and float valve
and float installed, the float should be parallel to the body
mounting surface. Fig. 81. If not, bend tang on float until
they are parallel. DO NOT PRESS ON FLOAT. Fig. 81.
Fig. 81 - Checking Float Level
Repair Carburetor
Use new parts where necessary. Always use new
gaskets. Carburetor repair kits are available. See
illustrated parts list for particular model. If throttle shaft
and/or venturi has been removed, install throttle and
throttle shaft first. Then install venturi. Now install jet on
small one piece or nozzle on large one piece Flo-Jet.
The nozzle or jet holds the venturi in place, Fig. 76.
Replace choke shaft and valve. Install new welch plug
using sealer around edge of plug. Stake plug in two (2)
places. Sealer is to prevent entry of dirt into engine.
Install float bowl, idle and high speed adjustment
needles.
Initial Adjustments
On small one piece Flo-Jets, turn in idle and high speed
needles until they just bottom. Open high speed needle
21/2 turns and idle needle 11/ 2turns on large one piece
Flo-Jets, turn both idle and high speed needles in until
they just bottom. Then turn both valves 11/2 turns open.
CARBURETION
One Piece Flo-Jet
These settings will allow the engine to start. Final
adjustment should be made when engine is running and
has warmed up. See carburetor adjustment. (Two piece
Flo-Jet carburetor.)
Choke-A-Matic
Remote Control Adjustment
On Choke-A-Matic carburetors, the remote control must
be correctly adjusted in order to obtain proper operation
of the choke and stop switch. See Section 4 for
illustrations by engine model.
TWO-PIECE FLO-JET CARBURETOR
SMALL, MEDIUM AND LARGE FLO-JET
Fig. 82 - Small Flo-Jet
Fig. 83 - Medium Flo-Jet
Fig. 84 - Large Flo-Jet
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