Specifications

12
2-Cycle Engine Speed and Mixture Adjustments: TVS/TVXL840
Rotate sleeve clockwise to increase R.P.M., counterclockwise to decrease R.P.M.
NOTE: The sleeve is serrated to rotate in a clockwise direction and must be raised using the sleeve tabs
before it can be rotated counterclockwise.
To disassemble, remove choke shutter with needle-nose pliers; the vane assembly may then be removed
from the carburetor.
9
HORIZONTAL FIXED SPEED
PLASTIC AIR VANE GOVERNOR
10
BEND TAB TO
ADJUST RPM
INCREASE
DECREASE
Governor and Linkage for Air Vane
IDLE RPM
ADJUSTMENT
SCREW
HIGH SPEED
RPM
ADJUSTMENT
SCREW
The HXL840 - 850 Series with variable speed control
have the following adjustments. Idle speed is set at
the carburetor crack screw. High speed is set with
the screw shown above. Always check Microfiche
card 30 or Parts Smart computer program for
correct speed settings.
R.P.M. adjustment of fixed speed models is done
by bending the tab as shown.
HSK/HXL840-850
IDLE SPEED
ADJUSTMENT
HIGH SPEED
ADJUSTMENT
5
HOLDING
SCREW
Linkage Location
To aid in the proper reassembly of the governor
linkage, mark the linkage locations.
6
Static Governor Adjustment
To adjust the static governor, loosen the holding
screw, rotate the governor arm and slotted shaft in
the direction that will open the throttle to the wide
open position, and then re-tighten the holding screw.
VANE ASSEMBLY
STATIC GOVERNOR
ADJUSTMENT SCREW
7
8
BEND TAB
TO ADJUST HIGH-
SPEED ROTATE
CLOCKWISE TO
INCREASE
COUNTERCLOCKWISE
TO DECREASE
DECREASE
INCREASE