19
OPERATION
come in contact with the cutting attachment. Hold the body of
the machine on the ground using your left hand (CAUTION!
Not with your foot!), see Fig. 39.
• Slowly push the purge bulb 6 to 8 times (A, Fig. 40).
• Pull the throttle trigger (C, Fig.41) and stop it at half-throttle put
the ON/OFF switch (B) in the position then release the throt-
tle trigger (C).
• Pull the choke lever (D, Fig. 42) in the CLOSE position.
• Pull the starter rope (Fig. 39) until the first firing of the engine
is heard (no more than five (5) pulls). A new unit may
require additional pulls.
• Never wrap the starter cord around your hand.
• When the engine starts, gradually move the choke lever (D,
Fig.43) to the OPEN position.
• Once the engine has started, press throttle trigger (C, Fig.41)
to release it from the half-throttle position and let the engine
idle. Warm up the engine until it run smoothly.
• When pulling the starter rope, do not use the full extent of the
rope as this can cause the rope to break. Do not let starter rope
snap back. Hold the handle and let the rope rewind slowly.
WARNING: Use the half-throttle device only in the
phase of starting the engine to cold.
To start the engine when warm, switch (E) must be positioned as
shown in Fig.44, page 20.
WARNING: Do not cut material with the choke/fast
idle lever at the CLOSE position. Do not operate your
brush cutter with the starting throttle lock engaged.
Cutting with the starting throttle lock engaged does
not permit the operator proper control of the brush
cutter.
NOTE - STARTING WARM ENGINE:
Follow above starting instructions, but do not use the CLOSE
position for start up again.
WARNING: Weather conditions and altitude may
affect carburetion. Do not allow bystanders close to
the brush cutter while adjusting the carburetor.
Keep the engine at full throttle the entire time you are cutting.
High Altitude Operation
At high altitude, the standard carburettor air-fuel mixture will be
excessively rich. Performance will decrease, and fuel consumption
will increase.
High altitude performance can be improved by specific modifica-
tions to the carburetor. If you always operate the engine at altitu-
des higher than 5,000 feet (1,500 m) above sea level, have your
authorized Efco dealer perform these carburettor modifications.
Even with suitable carburettor jetting, engine horse power will
decrease approximately 3.5% for each 1,000 feet (300 m) increa-
se in altitude. The effect of altitude on the horse power will be
greater than this if no carburettor modification is made.
CAUTION: Operation of the engine at an altitude
lower than the carburettor is jetted for may result in
reduced performance, overheating, and serious engi-
ne damage caused by an excessively lean air / fuel
mixture.
Breaking-in the Engine
The engine reaches the maximum power after 5-8 hours of activity.
40
41
43
en
39
40
42
To Next Page
Loading...
