Use and Care Guide

Pressure
Cylinder
Piston
Cylinder
Piston
Dust Cover
REPAIRING THE PISTON/CYLINDER ASSEMBLY
1. Remove the piston cylinder assembly by turning the piston
cylinder counter-clockwise when viewing the sprayer from the
bottom. Caution: The piston cylinder may have sharp edges.
2. Checkforverticalscratchesontheinsideofthepistoncylinder
 andthepiston.Ifoneorbotharescratchedreplacethem.
3. Toreplacethecollar,pushitoofthecrownofthepistonwith
 yourthumb.Youwillseeformfittedslotstoinstallthenewcollar
 ontothepistoncrown(fig.1).
4. Thereare2valveplatesonthepistoncylinder,oneontheinside
of the cylinder and one on the outside top. The valve plates are
held in place with a screw and washer and can be removed
 andreplacedusingaPhillipsheadscrewdriver.The2o-ringscan
be removed and replaced as well. Ensure that the o-rings are
positioned in the o-ring grooves in the piston cylinder.
5. Greasethe2O-ringsonthepistoncylinder(donotgetanygrease
on the valve plate) and screw the piston assembly into the
pressure cylinder base. Screw the piston cylinder clockwise until
tight and the bottom O-ring is no longer visible. When properly
placed, the tab on the piston cylinder will line up with the rib on
 thepressurecylinderbase(Fig.3).
6. Apply Petroleum jelly to the inside of the piston cylinder wall and
on the collar, and reinstall the piston assembly into the piston
cylinder.
7. Insertthepistonatananglewiththeleadingedgeofthecollar
placed over the slot in the piston cylinder . Bolt the piston
assembly to the pump shaft using the lever bolts.
8. Replace the protective dust cap. Tighten the nut and bolt.
Figure 2
Piston
Cylinder
Intake
Upper
Valve
Plate
Lower
Valve Plate
Outlet
Passage
Figure 3
Pressure cylinder
base rib
Piston cylinder tab
8E
Figure 4
Figure 5
Figure 1
Collar
Protective
Dust Cap