14
OPERATING INSTRUCTIONS
Never place hands or hand held tools (shovel) into
the mixer drum while it is turning. It could catch on
the mixer paddles and whip around, possibly injuring
the operator.
The speed of the mixer drum can be adjusted with the
handle on the flow control valve.
NOTE:
If the legs of the SS-590 Mixer interfere with
dumping the concrete, they can easily be turned 90° (fac-
ing each other) placing them out of the way.
Figure 3
If work is required while the mixer is attached to the
loader, the mixer must be blocked securely. NEVER trust
the loader’s hydraulic system.
The Model 590 Mixer is almost maintenance free. Just
check the gearbox for proper oil level every 40 hours of
operation and keep the unit clean.
Gearbox holds 86 fluid oz. of SAE 90w gear lube.
After mixing concrete, or any material that clings to the
side of the drum, be sure to clean thoroughly when fin-
ished. In mixing concrete, if there are lapses between
batches, it is a good idea to add some water and rinse so
that the concrete will not set in the drum.
Carefully check and replace any worn or damaged
parts.
Before servicing the machine, engage the parking
brake or place the transmission in “Park,” shut off the
skid steer and remove the key.
Keep clear of rotating parts; stay on seat until all
motion has stopped.
Do not get under machine to make adjustments
without securely blocking implement first.
OPERATION
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For best mixing, the drum should be inclined upward
10° to 15° (see Fig. 3). Add some water before cement,
sand or aggregate is put in drum.
NOTE:
ONLY LOAD MIXER WHILE DRUM IS TURNING.
DO NOT OVERLOAD THE MIXER.
The amount of water used per sack of cement is the key
to quality concrete. Use 5, 6 or 7 gallons of water per sack
of cement with dry sand and dry aggregate depending on
the strength of concrete required. The less water you use
the stronger the concrete will be and we suggest that you
deduct approximately 1 gallon if the material is wet and
approximately 1
1
/
2
gallons if very wet.
NOTE:
See next page for suggested Mix Instructions.
We suggest mixing a trial batch to determine exact
proportions you will want to use. If too wet, add more
sand and aggregate. If too stiff, reduce the amount of
sand and aggregate in the next batch, but
never
add
more water to a batch once you have established the
correct proportions to use.
After concrete is poured, it is screeded or struck off with
a straight edge like a 2 x 4 and should then be floated to
smooth it. Further troweling or finishing should be delayed
until the water sheen has disappeared from the surface.
The concrete should be cured at least five days. To pre-
vent evaporation of mixing water, cover with burlap or
straw and keep damp or cover with a vapor sealing mate-
rial to seal in the water and prevent evaporation.
MAINTENANCE
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WARNING
WARNING
