Servicing Instructions - The Fountainhead Group Backpack Sprayer Manual De Uso Y Cuidado

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Disassemble and Repair
Prior to performing any maintenance or repairs empty contents of tank. Pump any remaining fluid out
of the pump. Lock trigger and spray all fluid out of shut-off until all fluid and air pressure has been expelled.
Servicing Steps
1. Position pump handle all the way up, placing the piston in the down stroke to allow access to the screws
retaining the crank arms. Remove the pump handle. (See Figure 1)
2. Remove the four screws securing the crank arm to the drive shaft using a 6mm Allen Wrench.
(See Figure 2)
3. Next remove the screw that secures the crank arms to the drive links using a 5mm Allen Wrench.
(See Figure 3)
Figure 1
4. Remove the pump cover by inserting a flat head screwdriver into the lower snap windows of the pump
cylinder. (See Figure 4)
5. Withdraw the crank arms from the drive link through the side of the pump cylinder. (See Figure 5)
6. Now the drive link and piston assembly can be removed straight down through the bottom of the pump
cylinder. (See Figure 6)
Figure 4
7. The piston cup and cylinder walls should be periodically cleaned and recoated with fresh petroleum jelly.
Take note of any tears or scratches and replace as needed. Take care to guide the piston cup past the side
openings in the pump cylinder when reinstalling. (See Figure 7)
8. You will need the piston seal kit to rebuild the pump cylinder assembly. First remove the pump cylinder
by unscrewing it counterclockwise. (See Figure 8)
9. Use a Phillips head screwdriver to remove and discard the pump cylinder washers, saving the screw and
stainless steel washers. Replace with new. Do not grease pump cylinder washers. Inspect o-rings for wear
and replace with new and/or lubricate with petroleum jelly. (See Figure 9)
Figure 7

SERVICING INSTRUCTIONS

Figure 2
Figure 5
Figure 8
Figure 3
Figure 6
Figure 9
Page 5
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