Tecumseh ECV100-120 - TECHNICIAN S Handbook page 38

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GOVERNOR OVERRIDE SYSTEM FOR
TVM170, 195 AND 220 ENGINES
This system will be found starting on 1985 production
models, and will not retrofit onto older engines. It is
designed to allow the governor to regulate the low and
high speeds of the engine. The high speed is adjusted at
the top screw of the override lever; to increase R.P.M.
turn the screw out (counterclockwise), to decrease R.P.M.
turn the screw in (clockwise). The low speed is adjusted
at the bottom screw of the override lever; to increase
R.P.M. turn the screw in or clockwise, to decrease R.P.M.
turn the screw out or counterclockwise (diag. 31).
GOVERNED / NON-GOVERNED IDLE
TVM ENGINES WITH GOVERNOR OVERRIDE 31
With the engine throttle set at its lowest speed, set the
governed idle at the designated RPM by bending the idle
RPM tab or adjusting a screw. Next set the non-governed
idle by pushing the bottom of the governor lever away
from the control brackets, so the throttle lever contacts
the idle speed screw. Hold the lever in this position and
turn the idle adjustment screw clockwise to increase or
counterclockwise to decrease engine idle speed. The
setting on the carburetor screw should be set 600 RPM
below the governed idle setting. This setting prevents the
throttle plate from closing when going from high speed
RPM to low speed RPM. If improperly adjusted, the engine
could experience an over lead condition.
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