Stihl FS 235 - Replacing the Air Filter; Standard Setting; Adjusting Idle Speed

0458-507-0121-A
29
English 18 Troubleshooting
18.2 Replacing the Air Filter
The air filter cannot be cleaned. The air filter must be
replaced if there is a loss of engine or the air filter is
damaged.
► Shut off the engine.
► Move the choke lever to position .
► Take out the screws (1) and remove the filter cover (2).
► Clean the area around the air filter (3) with a damp cloth
or a soft brush.
► Take out the air filter (3).
► Install the new air filter (3).
► Fit the filter cover (2).
► Insert and tighten down the screws (1) firmly.
18.3 Standard Setting
► Shut off the engine.
► Turn the high speed screw (H) counterclockwise as far as
stop.
► Turn the low speed screw (L) clockwise as far as stop.
► Turn the low speed screw (L) 3/4 of a turn
counterclockwise.
18.4 Adjusting Idle Speed
► Carry out the standard setting.
► Start the engine.
► Warm up the engine by opening and closing the throttle for
about 1 minute.
3
2
1
1
0000-GXX-7810-A0
3
2
1
0000-GXX-7811-A0
0000-GXX-2946-A0
H
L
0000-GXX-4782-A0