Hydrotech Classic Series Stenner Basic Service Manual - Manual (Page 13)

12 Separating & Reconnecting Subassemblies
1. Put the pump head (with main shaft) into the feed rate
control and turn it counterclockwise until the shaft falls
into place.
2. Push the pump head (toward the feed rate), while turning it
counterclockwise, to line up the rivet holes on the pump
head with the rivets on the feed rate control.
3. Continue to push until the rivets are inside the holes and
the snap lock engages.
4. Turn the pump head counterclockwise to secure the rivets
in the rivet slots, firmly attaching the pump head.
Reconnecting Pump Head to Feed Rate
NOTE Additional information
Tubes must be horizontal
when completed.