16
spark plug gap--all models
Components of air filter
Filter element
Pre-filter
Loosen
fasteners
Remove the cover of the air filter
Maintenance
(continued)
10-Hour maintenance
(more frequently in dusty
conditions)
1.
Remove the air filter cover by
loosening the cover screw(s) and
lifting.
2.
Remove and inspect the pre-filter.
If the pre-filter is torn or otherwise
damaged, replace it with a new
one.
3.
Clean the pre-filter with soap and
water. Let dry before reinstalling.
4.
Inspect the air filter element. If the
element is damaged or distorted,
replace it with a new one.
5.
Tap filter gently on a hard surface to
dislodge debris from element or use
compressed air from the inside to blow
debris out and away from the air filter
element.
6.
Install the air filter element, pre-filter
and cover in the reverse order of
removal.
IMPORTANT!
Direct the air stream at the inside face
of the filter only!
CAUTION!
Never operate the unit if the air
cleaner assembly is damaged or
missing!
■
Lubricate the cutter assembly
gearcase by pumping one or two
strokes of lithium based grease
into the grease fitting (A) using a
lever-type grease gun.
CAUTION!
Before removing the spark plug,
clean the area around the plug to
prevent dirt and debris from getting
into the engine’s internal parts.
10/15-Hour maintenance
CAUTION!
Over lubricating can cause the
gearcase to operate sluggishly and
can cause grease to leak out.
Gearcase lubrication
Remove and clean or replace the
spark plug.
■
Clean the spark plug. Adjust
electrode gap according to the
values listed in the ”Specifications”
section. If the spark plug must
be replaced, use only the type
recommended in ”Specifications” or
equivalent resistor type spark plug of
the correct heat range.
Remove and inspect spark plug
Clean the spark
plug and check
the gap at the
electrode.
Gearcase
grease fitting
A
0.6 mm
(0.024 inch)
Lubricate cutter assembly and gearcase
Summary of Contents for AH254
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