Fig. 12
Fig. 13
Fig. 14
Fig. 15
8) Use the fi ne threaded ¾"/19mm screw (Ref.
#16) to fasten the impeller to the shaft (Fig. 12)
Check that a small o-ring is under the screw head
(Ref. #8). Tighten the screw as much as possible
by hand with a large, fl at head, wide blade screw-
driver or 7/16" socket. Hold the impeller with your
free hand to keep the impeller from turning while
tightening the screw.
9) Position the volute (Ref. #17) over the impel-
ler so that the bracket dowels fi t the holes in the
volute. Install the two small self-tapping side volute
screws (Ref. #18) and the large self-tapping top
volute screw (Ref. #19). Tighten these screws
just enough to pull the volute against the bracket
(Fig. 13). Over tightening these screws can strip
the threads.
10) Place the rubber
check valve
(Ref. #20) onto
the volute (Fig. 14). Press fi rmly around the edges
to make certain it is seated.
5
11) Coat the large
body o-ring
(Ref. #7) with a
thin fi lm of vegetable oil and install onto bracket
fl ange (Fig. 15). Make sure there is no dirt, lint,
hair, etc. on the o-ring or bracket fl ange.