Briggs & Stratton Twin Cylinder L-Head, Repair Manual

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3
16
ALL MODELS
STATIC GOVERNOR ADJUSTMENT (Before
Running Engine)
1. Loosen governor lever nut. Push on governor
lever until throttle is wide open. Do not bend
governor link or distort governor lever.
2. Rotate governor shaft counter-clockwise as far it
will go, Fig. 45.
a.
Torque governor nut to 100 in. lbs. (11.0 Nm).
3. Install throttle and choke control cables and check
for proper operation.
Fig. 45 – Static Governor Adjustment
TORQUE TO
100 in. lbs.
(11.0 Nm)
PARTS REMOVED
FOR CLARITY
Initial Carburetor Adjustment – All Engines
Equipped With Adjustable Mixture Valves
1. Turn idle mixture valve clockwise until it just seats.
DO NOT FORCE. Turn valve counterclockwise
1-1/2 turns.
2. If carburetor is equipped with an adjustable high
speed mixture valve, turn valve clockwise until it
just seats. DO NOT FORCE. Turn valve counter-
clockwise 1-1/2 turns.
This setting will permit the engine to start. Final
adjustment will be made with the engine running,
Fig. 46.
NOTE: Some early model carburetors are
equipped with a fixed jet needle valve,
NO TAG. Turn fixed jet needle in until it
seats firmly. Backing needle out, will cause
an excessively rich mixture.
Fig. 46 – Initial Carburetor Adjustment
HIGH SPEED
MIXTURE VALVE
(IF EQUIPPED)
IDLE MIXTURE
VALVE
FIXED JET
STYLE MIXTURE VALVE
Dynamic Governor Adjustment – Type Nos.
1100 And Above
ALL ADJUSTMENTS MUST BE MADE WITH THE
AIR CLEANER INSTALLED.
The following tools are required when making gover-
nor adjustments, Fig. 47.
1.
An accurate tachometer, such as Tool #19200 or
#19389.
2. Tang bender, Tool #19352 or #19229.
Start and run engine for approximately 5 minutes to
allow engine to warm up.
Fig. 47 – Governor Adjustment Tools
19389 19200
19352