1. Remove carbon stop seal (A) from groove in nozzle
body using razor blade or sharp knife and remove
upper sealing washer (B). Discard seal and washer.
2. Place nozzle in solvent or clean diesel fuel, so carbon
stop seal groove is submerged, and soak for a while.
IMPORTANT: Do not scrape or disturb the TEFLON
coating on the nozzle body above the
carbon stop seal groove. This coating
will become discolored during normal
A--Carbon Stop Seal
operation, but this is not harmful. Do
B--Upper Sealing Washer
not use a motor-driven brush to clean
3. After soaking, clean nozzle tip with brass wire brush.
Never use a steel wire brush or scraper.
TEFLON is a registered trademark of the DuPont Co.