Remove the O-ring 21 from the adjustable orifice

9.Use the Sherwood in-line adjusting tool (p/n TL102) to back the adjusting orifice out of the orifice housing until the threads disengage. Remove the in-line adjusting tool, and push the adjusting orifice the rest of the way out of the orifice housing with the Sherwood Plastic Probe (p/n TL111).

10.Remove the O-ring 21 from the adjustable orifice.

11.Before removing the exhaust valve 14 from the case, bend it over as far as it will go from the top, bottom, left, and right sides. If it fails to snap back quickly, and does not lie perfectly flat against the case, the valve should be replaced. If it does snap back satisfactorily, remove it and inspect the sealing edges. If they appear smooth, and the locking tab on the nipple is good, the valve can be reused.

12.Remove the lever support 7 from the inside of the case 19 . Note: The Blizzard and Oasis

style lever support can be removed with the heat transfer fins 8 9 still attached. These fins do not usually have to be removed from the lever support during servicing.

13.Normally, you will simply need to change the poppet stem seat insert 13 to restore the second stage to maximum performance. To change the stem seat insert 13 , leave the lever assembly together. With a pick or similar object, carefully remove the old seat insert. Put the new seat insert on a clean flat surface and lower the poppet cavity (from which the old seat insert

was removed) over the new seat insert. The new style black molded seat (p/n 978-9BN) should be installed with the identifying Sherwood symbol facing outward.

14.If parts of the lever assembly (stem, spring, lever, etc.) need to be replaced, it can be done with a minimum number of tools. With the original poppet seat 13 in place, and the orifice 22 installed in the orifice housing 20 , screw the orifice housing and lever support together (without the case) until the lever begins to droop. Use a #10 Torx screwdriver to remove the screw 5 . Unscrew the orifice housing and lever support, and the poppet and spring will be exposed for replacement. Reverse the procedure to install the new parts. Remember to use the old seat to perform this procedure since the seat is likely to be damaged due to excess friction. Install a new seat 13 when you have reassembled the lever assembly.

NOTE: If only the lever from under the screw 5

6is to be replaced, do not totally remove the screw. You can remove the lever when the screw is almost all the way out.

15.Rinse all plastic and silicone parts in clean fresh water, and then blow the parts dry with compressed air to remove any sand and dust particles.

16.If necessary, clean all metal parts of the second stage in an ultrasonic cleaner or cleaning solution. Remove the O-rings before cleaning any metal parts; most cleaning solutions are damaging to the O-ring material. See Section 6.3 in this manual for recommendations on cleaning solutions.

NOTE: If you use an ultrasonic cleaner to clean the second stage adjustable orifice 22 , use a plastic container to prevent the orifice from vibrating against other metal parts which could damage the orifice seal.

17.Inspect the case 19 for any cracks. Look particularly closely at the area where the orifice housing and the lever support clamp down. Replace the case if any cracks are found.

18.Inspect the orifice sealing cone (where the poppet insert seals) for any nicks, scratches, or