TO ADJUST REMOTE THROTTLE CONTROL
If the engine does not start or if it runs roughly, the remote throttle control may need adjustment. See your authorized Briggs & Stratton dealer or follow the instructions below.
CASING CLAMP SCREW |
SWIVEL |
EXHAUST MANIFOLD |
THROTTLE STOP |
[1]Remove air cleaner. Move throttle control to FAST. (Swivel should be against throttle stop.)
[2]If not, loosen casing clamp screw. Move casing and wire in direction shown by arrow until swivel is against throttle stop.
[3]Tighten casing clamp screw. Replace air cleaner.
CARBURETOR ADJUSTMENT
ADJUSTMENTS
GOVERNED IDLE SPRING | EXHAUST | |
MANIFOLD | ||
(RED OR WHITE) | ||
|
Governed idle spring
[1]Readjust the idle speed to 1200 rpm, if governed idle spring is red, or 900 rpm, if governed idle spring is white.
[2]Release carburetor throttle lever. Move throttle control to FAST position. Engine should accelerate smoothly. If it does not, readjust idle mixture valves slightly counterclockwise.
Note: Engines operated at about 3000 to 5000 feet (900 to 1500 meters) above sea level may require a high altitude carburetor main jet. If erratic performance is observed, contact a Briggs & Stratton Authorized Service Dealer for cost to install/purchase a high altitude carburetor main jet.
WARNING
The manufacturer of the equipment on which this engine is installed specifies top speed at which the engine will be operated. DO NOT EXCEED this speed.
Differences in fuel, temperature, altitude or load may require minor carburetor adjustment. Air cleaner and air cleaner cover must be assembled to carburetor before starting engine.
The carburetor on this engine is low emission. It is equipped with an idle mixture valve with a limiter (see inset), which allows some adjustment, and an idle speed adjustment screw. DO NOT remove limiter caps. DO NOT force beyond limits.
TO ADJUST CARBURETOR
CARBURETOR THROTTLE LEVER | IDLE |
| SPEED |
| SCREW |
| LIMITER |
IDLE | CAP |
| |
MIXTURE |
|
VALVE |
|
[1]Start engine and warm up approximately 5 minutes before adjusting. With engine running, place throttle control in SLOW position.
[2]Rotate carburetor throttle lever against the idle speed screw and hold it.
[3]Turn idle speed screw to obtain 1300 to 1500 rpm.
[4]While still holding carburetor throttle lever against idle speed screw, turn idle mixture valve with limiter cap screw midway between limits.
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