Finish Thompson EFV - Manual (Page 9)

5. Outer Tube Installation - for EFP & EFV models - Install the outer tube
(item 16). Make sure the center support (if used) is installed correctly on
the inner tube. The center support has a slight taper that allows the outer
tube to slide easily over it.
See figure 8. Slide the outer tube with external threads over the shaft,
shaft sleeve, inner tube and center support (if used) up into the head (item
6). Turn the outer tube counter clockwise (left hand thread) to tighten it into
the head. Hand tighten.
Figure 8
6. Diffuser Installation - for all models - Install the diffuser (item 17) onto the
bottom of the outer tube. Insert the shaft through the small support opening
on the diffuser. See figure 9. The small support opening will insert up inside
the inner tube (item 13). With a slight push and turn, thread the diffuser into
the outer tube (item 16) turning counter clockwise (left hand thread). EFP
and EFV models - only tighten the diffuser halfway or 3-4 turns. See figure
10. Insert the impeller (item 18) into the bottom of the diffuser. With a slight
push and turn the impeller should twist through the impeller guards and en-
gage the shaft threads. Use a flathead screwdriver to tighten the impeller to
the shaft turning clockwise (right hand thread). See figure 11. Hold the half
coupling (item 2) in one hand while turning the impeller with the other.
Hand tighten. Once the impeller is tightened, finish tightening the diffuser turning counter clockwise (left hand thread).
Hand tighten.
Figure 9
Figure 10 Figure 11
7. For EFS Models - Thread the diffuser (item 17) completely onto the bottom of the outer tube (item 16). Thread the
impeller onto the shaft by hand. While holding the half coupling with the other hand, turn the impeller clockwise
(right hand thread). See figure 12. Install the diffuser cover (item 19), EFS models only, onto the diffuser turning
counter clockwise (left hand thread). Hand Tighten.
Figure 12
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