MC94SK/PK CONCRETE MIXER • OPERATION MANUAL — REV. #0 (06/22/22) — PAGE 31
TROUBLESHOOTING (MIXER)
Troubleshooting (Mixer)
Symptom
Possible Problem
Solution
Drum rotates rough.
Defective ring gear?
Check that the ring gear and bearings
are not worn . Replace as necessary.
Defective pinion gear?
Check that the pinion gear and
bearings are not worn . Replace as
necessary.
Worn V-belt?
Replace V-belt.
Loose pulley?
Tighten or replace pulley.
Drum does not rotate at all.
Incorrect or no voltage being supplied
to electric motor?
Check that the electric motor has the
correct supply voltage.
Power to electric motor?
Inspect power source and extension
cord. Push reset button on electric
motor. Make sure correct voltage is
being supplied to motor.
Fuel?
Check level of fuel in fuel tank. Add
fuel if necessary. Make sure fuel is
being supplied to the engine. Check
to ensure that the fuel fi lter is not
clogged.
Broken V-belt?
Replace V-belt.
Defective ring or pinion gears?
Check that the gears and bearings
are not broken. Replace as
necessary.
Defective electric motor?
Replace electric motor.
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