A
A
B
B
C
C
D
D
E
E
F
F
G
G
H
H
J
J
K
K
L
L
M
M
N
N
P
P
R
R
T
T
24
24
23
23
22
22
21
21
20
20
19
19
18
18
17
17
16
16
15
15
14
14
13
13
12
12
11
11
10
10
9
9
8
8
7
7
6
6
5
5
4
4
3
3
2
2
1
1
DRAWN
CHK'D
APPV'D
MFG
Q.A
UNLESS OTHERWISE SPECIFIED:
DIMENSIONS ARE IN MILLIMETERS
SURFACE FINISH:
TOLERANCES:
LINEAR:
ANGULAR:
FINISH:
DEBURR AND
BREAK SHARP
EDGES
NAME
SIGNATURE
DATE
MATERIAL:
DO NOT SCALE DRAWING
REVISION
TITLE:
DWG NO.
SCALE:1:5
SHEET 1 OF 1
A0
WEIGHT:
GLT WEN4750
MAINTENANCE
Check every 50 hours of operation (refer to Fig. 14 - Recommended Maintenance Schedule).
Routine maintenance of the air filter helps maintain proper airflow to the carburetor. Occasionally check that the
air filter is free of excessive dirt. Clean air filter more frequently in dirty or dusty conditions
AIR FILTER MAINTENANCE
To inspect and clean the air filter:
1. Unscrew the cover bolt and remove the air filter cover (Fig. 18).
2. Remove the sponge-like air filter element from the casing. Wipe
excessive oil and any dirt from inside of the air filter casing.
3. Check and clean the foam air filter element. Good elements can be
washed in soapy water. Dry the element in clean cloth (do not twist
it). Add a few drops of engine oil to the air filter element and spread
it evenly.
If the air filter element has been damaged, replace it with a new one.
Replacement air filters can be ordered from
wenproducts.com
by searching
part no. DF475-166.1.
4. Reinstall the air filter element and air filter cover.
Fig. 17
Air Cleaner Cover
WARNING:
Running the engine with a dirty, damaged or missing air filter element can result in danger to
the operator and cause the engine to wear out prematurely.
28
Inspect and clean the spark arrestor every 100 hours of operation.
The spark arrestor is located outside the muffler, which gets very hot during operation. Allow the engine to cool
completely before servicing the spark arrestor. To inspect and clean the spark arrestor:
SPARK ARRESTOR MAINTENANCE
1. Remove the screws holding the cover plate which retains the end
of the spark arrestor to the muffler (Fig. 19).
2. Remove the spark arrestor screen.
3. Carefully clean and remove the carbon deposits from the spark
arrestor screen with a wire brush. Replace the spark arrestor if it is
damaged.
4. Reinstall the spark arrestor in the muffler and secure it in place
with the screws.
Fig. 18