Product Manual

8
OPERATING INSTRUCTIONS (Continued)
NOTE: To remove the air cap loosen and remove the knurled nozzle ring (see figure M).
Pull the air cap straight out and off of the fluid nozzle. It is not necessary to loosen or
remove the fluid nozzle from the nozzle body when cleaning the air cap.
(Non Remote Nozzle)
If air pressure exceeds normal setting and the engine rpm has not increased
above normal, a partial blockage may have occurred in the air cap of the
aerosol nozzle assembly. To clean air cap (and fluid nozzle when necessary)
use acetone as a solvent for gum or varnish and wipe all surfaces clean with
a rag. Carefully clean the orifice in the air cap with a rag and acetone. Blow
through the orifice with compressed air if available. While air cap is removed,
wipe clean all exposed surfaces of the fluid nozzle. Be sure that any deposit
or build-up is wiped clean form the projecting snout of the fluid nozzle, where
it projects through the center orifice of the air cap.
While the air cap is removed, also inspect the small holes in the fluid nozzle
for deposits or internal build-up. Cleaning of these holes (and removal of the
fluid nozzle) is seldom required due to the large area in relation to the air
flow area through the air cap. To clean the holes in the fluid nozzle, remove
nozzle and clean holes with a toothpick and acetone. Also clean all exposed
surfaces with a rag and acetone. At the same time, clean the circular air
grooves in the back of the fluid nozzle. Blow through the holes with
compressed air, if available.
All nozzle assembly parts should be soaked in acetone if necessary to soften
gum, varnish or other deposits.