Cub Cadet RZT 50 Operator's Manual page 45

ADJUSTMENTS
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.
THROTTLE
STO P
FAST
[1]
[2]
SWIVEL
CASING
CLAMP
SCREW
Move throttle control to FAST. (Swivel should be
against throttle stop.)
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.
CARBURETOR ADJUSTMENT
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 not
adjustable except for idle speed. Governed idle speed
is1750 rpm, set at the factory.
TO ADJUST CARBURETOR
Double Barrel
IDLE
SCREW
CARBURETOR
THROTTLE
LEVER
Single Barrel
IDLE
SPEED
SCREW
CARBURETOR
THROTTLE
LEVER
14
[1] Start engine and warm up approximately 5 minutes
before adjusting.
[2] With engine running, place throttle control in SLOW
position.
[3] Rotate carburetor throttle lever against the idle speed
screw and hold it.
[4] Turn idle speed screw to obtain 1500 rpm.
[5] Release carburetor throttle lever. Movethrottle control
to FAST position. Engine should accelerate smoothly.
Note: Engines operated at about 3000 feet (900 meters) or
higher above sea level may require a high altitude carbure-
tor 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.