10
English
This engine is only for use in D
e
WALT approved applications. If
used in unapproved applications, D
e
WALT is not responsible for
repairs or damage and the warranty if void. Call 1-800-4-D
e
WALT
(1-800-433-9258) for more information.
maintenance Chart
procEDurE
d
ail
y
100
hour
s
50
hour
s
or
weekl
y
(w
hic
he
ve
r
comes
first)
150
hour
s
or
monthl
y
(w
hic
he
ve
r
comes
first)
500
hour
s
Clean air filter (3)
X
Check oil level
X
Change oil (1,2,3)
X
Clean spark plug
X
Clean engine’s exterior
X
Check and adjust valve clearance
(.15 mm intake, .2 mm exhaust) (2)
X
Clean spark
arrester (if equipped)
X
Clean debris screen (if equipped)
X
1. The engine oil must be changed after the first 20 hours of
operation. Thereafter change oil every 150 hours of operation
or monthly, whichever comes first.
2. See D
e
WALT shop manual for detail instructions. To order a shop
manual call 1-800-4-D
e
WALT.
3. Perform more frequently in dusty or humid conditions
Cleaning Air Filter Element (Fig. 1)
WARNING
: Hot surfaces. Risk of burn. Engine and surrounding
parts are very hot, do not touch (see the Hot Surfaces identified in
Figure 1). Allow engine to cool prior to servicing.
A dirty air cleaner will restrict airflow to the carburetor. To prevent
carburetor mal func tion, service the air filter regularly. Service more
frequently when operating the engine in extremely dusty areas.
WARNING:
Using gasoline or flam mable solvent to clean the filter
element can cause a fire or explosion.
WARNING:
Risk of fire. Do not operate without air filter.
to clEan thE ElEMEnts
DW168f-2E, DW177f-E, DW168f-2h, DW177f-h
1. Remove the wing nut (Y)
Y
X
Y
Y
AA
Z
and
the
air
filter
cover (X).
2. Remove the second wing
nut (Y) and remove the
filter (Z).
3. Remove the foam-type
pre-filter (AA) from the
filter (Z).
4. Inspect foam and paper
elements. Replace them if damaged.
to clEan thE ElEMEnts
Foam element:
Wash element in warm, soapy water. Then saturate
it in clean engine oil. Squeeze the element to remove excess oil.
Paper element:
Clean element by tapping gently to remove dust.
Use compressed air to blow off dust.
WARNING
: When using compressed air, user always must wear
eye protection that conforms to ANSI Z87.1. (CAN/CSA Z94.3).
