Replacing The Air Filter; Standard Setting; Adjusting Idle Speed - Stihl FS 235 Instruction Manual

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
2
1
1
► 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).
3
► Install the new air filter (3).
► Fit the filter cover (2).
► Insert and tighten down the screws (1) firmly.
0458-507-0121-A
.
3
2
1

18.3 Standard Setting

► Shut off the engine.
H
► 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.
English
L
29