12
AltAir Octo Service and Repair Manual
AltAir Octo
WARNING
: DO NOT attempt to use any other manu-
facturer's part as a substitute for any XS Scuba part,
regardless of any similarity in shape, size, or appear-
ance. Doing so may render the product unsafe, and
could result in serious injury or death.
1. Install both exhaust valves(8), if they were removed, into
the second stage housing(5) by gently pulling the stem
through the hole in the center of the sealing area, until the
barb has passed through and is securely seated against
the opposite side. Trim the excess stem material close to
the barb.
2. Fit two tabs on one side of the exhaust grill(9) into the
mating slots of the second stage housing, and then flex
it inward slightly to engage the tabs on the opposite side.
(See Fig. 8.)
3. Install a new LP seat(20) into the head of the poppet(19)
with the smooth side facing out, and press it into place so
that it is seated flush. DO NOT use adhesive.
4. Apply a light coat of lubricant to both ends of the LP
spring(18), and place the spring over the threaded shaft
of the poppet.
5. Mate the squared poppet shaft through the lever sup-
port(17), and then fit the inlet fitting(22) over the poppet
head. Screw the inlet fitting clockwise into the lever sup-
port by hand, in order to hold the poppet shaft securely in
place without turning.
6. Place the lever(16) over the poppet shaft inside the flange
of the lever support as shown in Fig. 9, followed by the
spacer(15).
7. Turn the locknut(14) clockwise by hand until the threads
are engaged by at least two turns. Apply a 4" nut driver
to turn the locknut clockwise until exactly two threads of
the poppet shaft are visible outside the locknut. (See Fig.
10.)
8. Remove the inlet fitting from the lever support, and install
the O-ring(21) onto the groove of the inlet fitting above
the smaller section of threads.
9. Install the valve assembly into the second stage housing
with the lever facing up (see Fig. 11). While holding it se-
curely in place, mate the inlet fitting through the opposite
side of the second stage housing, and turn clockwise by
hand until finger snug.
Fig. 9 – Correct Lever Orientation
Fig. 8 – Exhaust Grille Installation
Fig. 10 – Valve Reassembly
Fig. 11 – Installation of Inlet Fitting
