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Daily Gun Maintenance
312579K 13
Excessive air
blowing back
Loose fluid nozzle (11). Tighten fluid nozzle (11).
Damaged fluid nozzle seal (19). Replace seal (19).
Excessive air leak
behind
trigger.
Worn u-cups/air valve. Repair gun (Kit 289408). Be sure to use
all included parts.
Worn trigger. Replace trigger (part 289140). If leak per-
sists repair gun (Kit 289408).
Problem Cause Solution