Harbor Freight Tools Gas Powered Two-Stage Air Compressor 67853 - Manual (Page 15)

Page 13 For technical questions, please call 1-800-444 3353. Item 67853
Changing Oil
To drain the oil from the Pump Crankcase:
a. Place a container under the Drain Plug.
b. Remove the Oil Plug to allow air flow into the Pump.
c. Remove the Drain Plug, allowing the oil to drain into
the container.
d. When the oil is completely drained from the Pump,
replace the Drain Plug.
e. Fill the Pump with new compressor oil to the FULL
level on the Oil Sight Glass.
f. Replace and tighten the Oil Plug.
g. Discard the old oil according to local, state and
federal regulations.
Draining Moisture from the Tank
The Drain Valve is located under the Tank. It must be
accessed daily to release all trapped air and moisture
from the Tank. This will eliminate condensation which
can cause tank corrosion.
To empty the air and condensation:
a. Make sure the compressor engine is off.
b. Place a collection pan under the Drain Valve.
c. Open the Drain Valve by pivoting the lever on the
bottom of the Compressor so the lever is in line with
the Drain Valve.
d. When all the pressure is released, close the
Drain Valve by pivoting the lever on the bottom of
the compressor so that the lever is perpendicular to
the Drain Valve.
Air Filter Maintenance
Check the Air Filter weekly to see if it needs
replacement. If working in dirty environments, you may
need to replace the filter more often. To replace the
Air Filter:
a. Unthread the Wing Nut holding the Air Filter
Assembly in place.
b. Remove the Air Filter Assembly.
c. Replace with a new Air Filter.
d. Secure in place with the Wing Nut.
Adjusting belt Tension
1. Remove the Belt Guard Cover (129) and set it aside.
2.
Deflection
Distance
Press on the center of the longest span on each
belt with moderate finger pressure (4-4.5 lb.). Then
measure the deflection distance, the distance that the
belt moved. The belt should deflect anywhere from
1/2” to 1”.
3.
Bottom Plate (114)
Nut (115)
Threaded Rod
(118)
Bolts (110)
Engine
Mounting
Bolts
Engine Base
If either belt deflects too much, tighten belts by
loosening the four Bolts (110) on the Bottom Plate (114)
and moving the engine away from the other pulley
slightly by turning the Nut (115) holding the Threaded
Rod (118). Secure engine mounting bolts and retest
tension. If either belt is too long to be properly
tensioned, both belts must be replaced.
4. If either belt deflects too little, loosen belts by
loosening the Bolts on the Bottom Plate and moving the
engine towards the other pulley slightly by turning the
Nut (115) on the Threaded Rod (118). Secure engine
mounting bolts and retest tension.
5. Before use, replace belt cover.
Maintenance