WM120PH/SH HYDRAULIC MIXER • OPERATION AND PARTS MANUAL — REV. #7 (09/15/11) — PAGE 15
GENERAL INFORMATION

Application

The MQ WM120 series hydraulic mixers (drum capacity
12.0 cu. ft./340 liters) are shipped completely assembled
and have been factory tested and are ready for use.
This mixer is only intended for the mixing of plaster and
mortar. The mixer must be used for its intended purpose
and is not suitable for the mixing of flammable or explosive
substances. The mixer must not be used in an explosive
atmosphere. This mixer has a batch capacity between 3-1/
2 and 4-1/2 bags.

Power Plants

These hydraulic mixers can be powered by either a 11 HP
Honda GX390 air-cooled, 4-stroke gasoline engine or a 5.0
HP electric motor. Refer to Table 2 for specific engine or
electric motor data information.

Electrical

If mixer is equipped with an

electric motor

, make sure
that the power being supplied to the motor corresponds to
the voltage rating label on the motor. Supplying the wrong
voltage to the electric motor will cause severe electrical
damage to the motor.
Always make sure the

OFF/ON

switch on the electric motor
is in the OFF position before applying power.

Extension Cables

The extension cable should be a 3-wire configuration that
includes a ground wire that conforms to UL code. The wire
cross section must be a minimum of 2.5 mm2. Choose an
extension cord of adequate current carrying capacity as
referenced in Table 5. Remember

cable distance

affects
the current-voltage capacity of the extension cable.
Ensure that the extension cable is carefully laid out avoiding

wet areas

,

sharp edges

and locations where vehicles might
run over it. Avoid allowing the extension cable to be trapped
underneath the mixer.
Unroll the extension cable fully or it will overheat and could
catch fire. Make sure that all extension cable connections
are dry and safe. Replace any defective or badly worn
extension cable immediately.
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Hardware
Check all hardware on the mixer before starting. Periodically
inspect all hardware. Loose hardware can contribute to early
component failure and poor performance. Use Table 4 as
general guideline when torqueing of mixer hardware is
required. Remember to keep all mixer hardware components
tight.

Engine Maintenance

For basic engine maintenance, refer to the engine
maintenance section in this manual. For a more detailed
engine maintenance, refer to the

Honda

Engine Owner's
manual furnished with the engine.