90
c. To change the spray pressure, excess pressure in
the pressure cylinder must be released back into
the tank through the spray tube. To adjust, push
down on the knob and rotate to align the desired
number with the alignment pin. Note: maximum
pressure for Solo Backpack Sprayer - Model 475
is 60 psi.
7. Filling the Spray Tank.
a. Mix the spray formula and the proper volume of
water in a separate container. Pour the mix
through the filter basket in the tank opening. This
keeps debris from entering sprayer.
b. To fill the sprayer to its full 4-gallon capacity, set
the pressure control valve to the 3 or 4 setting.
c. Add 2 or 3 gallons of pesticide mix, pump the
sprayer handle to prime the pump, and fill the
pressure cylinder. The volume of liquid in formula
the pesticide mix tank will appear to decrease as
the pressure cylinder is filled. Liquid will flow
through the top of the pressure regulator when
the cylinder is completely full.
d. Add the remaining formula mix to the tank.
Remember that it's not necessary to completely
fill the spray tank each time. Mix only the amount
needed to get the job done.
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