Homelite UT21566 Operator's Manual page 16

CLEANING THE AIR FILTER SCREEN
See Figures 1 - 1.
For proper performance and long life, keep air filter screen
clean.
 Remove the hex nut, wavy washer, flat washer, and choke
dial cover.
 Brush the air filter screen lightly to clean.
 Reinstall the choke dial cover, flat washer, wavy washer,
and hex nut. Tighten hex nut to secure.
FUEL CAP
WARNING:
A leaking fuel cap is a fire hazard and must be replaced
immediately.
The fuel cap contains a non-serviceable filter and a check
valve. A clogged fuel filter will cause poor engine perfor-
mance. If performance improves when the fuel cap is loos-
ened, check valve may be faulty or filter clogged. Replace
fuel cap if required.
SPARK PLUG
This engine uses a Champion RCJ6Y or equivalent spark
plug with .025 in. electrode gap. Use an exact replacement
and replace annually, or more frequently if necessary.
STORING THE TRIMMER
 Clean all foreign material from the trimmer. Store it in a
well-ventilated place that is inaccessible to children. Keep
away from corrosive agents such as garden chemicals
and de-icing salts.
 Abide by all Federal and local regulations for the safe
storage and handling of gasoline.
WHEN STORING 1 MONTH OR LONGER:
 Drain all fuel from tank into a container approved for
gasoline. Run engine until it stops.
MAINTENANCE
CHOkE DIAL
COVER
wAVY
wASHER
HEX
NUT
SCREEN
Page 1
FLAT
wASHER
BRUSH
FILTER
FILTER
SCREEN Fig. 15
Fig. 16