Husqvarna ST724 Snow Blower User Manual


 
20
OPERATION
FILL GAS:
Fill the fuel tank with clean, fresh, unleaded grade auto-
motive gasoline. Be sure that the container you pour the
gasoline from is clean and free from rust or other foreign
particles. Never use gasoline that may be stale from long
periods of storage in the container.
NOTE: S.A.E. 5W-30 motor oil may be used to make
starting easier in areas where temperature is consis-
tently 20° F. or lower.
WARNING: Experience indicates that alcohol blended
fuels (called gasohol or those using ethanol or metha-
nol) can attract moisture which leads to separation and
formation of acids during storage. Acidic gas can damage
the fuel system of an engine while in storage.
To avoid engine problems, the fuel system should be
emptied before storage for 30 days or longer. Start the
engine and let it run until the fuel lines and carburetor are
empty. Use the carburetor bowl drain to empty residual
gasoline from the float chamber (III 33). Use fresh fuel
next season (See Storage section in this manual for
additional information).
TO STOP ENGINE
To stop engine, move the throttle control lever to
"STOP" position and remove key. Keep the key in a
safe place. The engine will not start without the key.
TO START ENGINE (Electric Starter)
Be sure that the engine has sufficient oil. The snow
thrower engine is equipped with a 120 volt A.C. electric
starter and recoil starter. Before starting the engine, be
certain that you have read the following information:
COLD START (See III.9)
Be sure the auger drive and traction drive levers are
in the disengaged "RELEASED" position.
Move the throttle control up to "FAST" position.
Push the key into the ignition slot. Be sure it snaps
into place. Do not turn the key. Remove the plastic
bag and extra key.
Rotate the choke knob to "FULL" choke position.
Connect the power cord to the switch box on the
engine.
Plug the other end of the power cord into a three
hole, grounded 120 volt A.C. receptacle.
Press the primer button two or three times while
keeping your finger over the vent hole on the primer
button. Additional priming may be necessary for the
first start if the temperature is below 15° F.
Push down on the starter button until the engine
starts. Do not crank for more than 10 seconds at a
time. This electric starter is thermally protected. If
overheated it will stop automatically and can be
restarted only when it has cooled to a safe tempera-
ture (a wait of about 5 to 10 minutes is required).
THIS STARTER IS EQUIPPED WITH A
THREE-WIRE POWER CORD AND PLUG
AND IS DESIGNED TO OPERATE ON 120
VOLT AC HOUSEHOLD CURRENT.
IT MUST BE PROPERLY GROUNDED AT
ALL TIMES TO AVOID THE POSSIBILITY
OF ELECTRICAL SHOCK WHICH MAY
BE INJURIOUS TO OPERATOR.
FOLLOW ALL INSTRUCTIONS CARE-
FULLY AS SET FORTH IN THE “TO
START ENGINE” SECTION. DETERMINE
THAT YOUR HOUSE WIRING IS A THREE-
WIRE GROUNDED SYSTEM.
ASK A LICENSED ELECTRICIAN IF YOU
ARE NOT SURE.
IF YOUR HOUSE WIRE SYSTEM IS NOT
A THREE-WIRE SYSTEM, DO NOT USE
THIS ELECTRIC STARTER UNDER ANY
CONDITIONS.
IF YOUR SYSTEM IS GROUNDED AND A
THREE-HOLE RECEPTACLE IS NOT
AVAILABLE AT THE POINT YOUR
STARTER WILL NORMALLY BE USED,
ONE SHOULD BE INSTALLED BY A LI-
CENSED ELECTRICIAN.
WHEN CONNECTING 120 VOLT AC
“POWER CORD,” ALWAYS CONNECT
THE CORD TO THE “SWITCH BOX” ON
THE ENGINE FIRST, THEN PLUG THE
OTHER END INTO THE THREE-HOLE
GROUNDED RECEPTACLE.
WHEN DISCONNECTING “POWER
CORD,” ALWAYS UNPLUG THE END IN
THE THREE-HOLE GROUNDED RECEP-
TACLE FIRST.
When the engine starts, release the starter button
and slowly rotate the choke to "OFF" position. If the
engine falters, rotate the choke to "FULL" and then
gradually to "OFF".
Disconnect the power cord from the receptacle first
and then from switch box on engine.
NOTE: Allow the engine to warm up for a few minutes
because the engine will not develop full power until it
reaches operating temperature.
Run the engine at or near the top speed when
throwing snow.
WARM START
If restarting a warm engine after a short shutdown, leave
choke at "OFF" and do not push the primer button.