OPERATION
STEP 5
OPERATIONING INSTRUCTIONS:
1. For the 430 model, put the stopper in the engaged position. (See Installation step 2).
2. Make sure the snowblower is clear of snow before engaging the snowblower.
3. Make sure that the auger and impeller operate freely.
4. Start the tractor engine
IMPORTANT: USE FULL ENGINE R.P.M. WHEN REMOVING WET OR STICKY SNOW. LOW R.P.M.
WILL TEND TO PLUG THE CHUTE.
5. Engage P.T.O. slowly and maintain engine speed at 3/4 to full throttle.
6. Low range works best for most conditions. Adjust speeds to match snow conditions. The snowblower
works best with plenty of snow being fed into the blades. In light snow (4’’ to 6’’) increase travel speed.
7. Float position may be used, but carrying some of the weight with the power unit gives better traction. May
require frequent lifting and lowering on 4-wheel drive units. If drive belts slips, adjust drive belt tension
according to power unit manual.
8. Keep the chute rotator chain tight.
9. Rotate chute using the auxiliary hydraulic control lever. Try to blow snow with the wind on windy days. 10.
Set the angle of the deflector according to the distance the snow must be thrown and to prevent property
damage. To change the deflector angle, loosen the two deflector knobs & adjust the deflector to the ap-
propriate angle and retighten the two knobs securely. If equipped with an Electric Deflector Kit, use the toggle
switch for up or down deflector movement.
11. When removing snow, do not use the snowblower as a dozer blade to push snow. Allow snowblower to
ingest snow at its own speed. If the speed of your tractor is too fast, the snowblower may become over-
loaded and plug. For best results, raise the snowblower and remove a top layer of snow. A second
pass with the snowblower will remove the remaining snow.
CLEARING A CLOGGED DISCHARGE CHUTE:
Hand contact with the rotating impeller inside the discharge chute is the most common cause of injury asso-
ciated with snowblowers. Never use your hand to clean out the discharge chute.
To clear the chute:
1. Lower snowblower to the ground and set parking brake.
2. SHUT THE ENGINE OFF & REMOVE KEY!
3. Wait 10 seconds to be sure that
all moving parts
such as the impeller blades have stopped moving.
4. Disconnect wire from the spark plug(s) and keep wire away to prevent accidental starting.
5. Always use a clean-out tool of at least 36” in (1 m) length, NEVER YOUR HANDS.
ASSURE CLEAR DISTANCE IN THE DIRECTION OF THROWING SNOW. OBJECTS CAN BE PRO-
PELLED FROM BLOWER CAUSING POSSIBLE DAMAGE TO PROPERTY OR INJURY TO
BYSTANDERS.
BE ALERT! WATCH FOR BURIED OBJECTS IN THE SNOW WHICH COULD BE THROWN OR
CAUSE DAMAGE TO MACHINE.
NEVER TRAVEL AT SPEEDS THAT WOULD CAUSE DAMAGE TO THE MACHINE OR INJURY TO THE
OPERATOR IF THE MACHINE WERE TO BE STOPPED SUDDENLY BY AN IMMOVABLE OBJECT.
READ THE TRACTOR OWNER’S MANUAL CAREFULLY. BE THOROUGHLY FAMILIAR WITH THE
CONTROLS & PROPER USE OF THE ATTACHMENT. KNOW HOW TO STOP THE ATTACHMENT &
DISENGAGE THE CONTROLS QUICKLY.
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Summary of Contents for 75-70666
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Page 19: ...PARTS SECTION PARTS SECTION 17 ...
Page 20: ...PARTS BREAKDOWN SB448 SNOWBLOWER 18 ...