18
HARDI
®
12 VOLT ESTATE SPRAYER OPERATOR’S MANUAL
8.0 STORAGE
When the spraying season is over, you should devote some extra time
to the sprayer. If chemical residues are left over in the sprayer for long
periods, it can reduce the life of the individual components. To
preserve the sprayer and protect the components, carry out the
following off-season storage program:
7.3 Pump Maintenance
To disassemble pump head assembly, remove two screws A (Fig. 5)
at front of pump. Rotate bearing cover so access notch is aligned with
cam/bearing set screw on motor shaft. Loosen set screw with 1/8” allen
wrench and slide pump head off motor shaft.
To install replacement pump head, coat motor shaft with grease prior
to assembly. Slide cam/bearing assembly over motor shaft. Align set
screw with dimple in motor shaft and tighten securely. Set screw must
center in shaft dimple for correct cam position, otherwise diaphragm
may be damaged. Rotate pump head to original position. Install top
and bottom screws A (Fig. 5) and tighten.
Operate pump to make sure flow and motor speed are normal. If
operation is noisy, flow is down or pressure is low, recheck cam/
bearing set screw to make sure it is centered in the shaft dimple (See
Section 11.0, page 23 for FLOJET PUMP BREAKDOWN).
Fig. 5
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