12. Fit Valve Seat to Gunbody.
15. Fit Seal to Housing (10).
18. Tighten Housing.
13. Remove Rear Airvalve Seal
from housing (10) with a
hooked instrument.
16. Replace Valve (11).
19. Fit Needle (9).
21. Adjust Needle Packing (4)
with Spanner sufficient to
seal but to allow free move-
ment of needle. Lubricate
with gun oil.
SB-2-658-D
14. Fit new Rear Seal to Service
Tool so that the groove faces
the handle end of tool.
17. Replace Valve Spring by
inserting small end of spring
into gun, and screw in
Housing (10).
20. Fit Spring (8) and Knob (7).
Page 7