Spark Arresting Screen In Muffler - Stihl HS 87 Instruction Manual

English
Adjusting Idle Speed
Engine stops while idling
Warm up the engine for about
N
3 minutes.
Turn the idle speed screw (LA)
N
slowly clockwise until the engine
runs smoothly – the cutting blades
must not move.
Cutting blades run when engine is idling
Turn the idle speed screw (LA)
N
counterclockwise until the cutting
blades stop moving and then turn
the screw about another 1/2 to 3/4
turn in the same direction.
WARNING
If the cutting blades continue moving
when the engine is idling, have your
power tool checked and repaired by your
servicing dealer.
20
Spark Arresting Screen in
Muffler
Check the spark arresting screen in
N
the muffler after about 20 hours of
operation, or if the engine is down
on power or runs erratically at
maximum speed.
WARNING
Wait for the engine to cool down
completely before performing this work.
Take out the screws (1).
N
2
Remove the exhaust pipe (2).
N
3
Use a 16 mm socket wrench to
N
unscrew the spark arresting
screen (3).
Clean the spark arresting screen. If
N
the screen is damaged or heavily
carbonized, fit a new one.
Refit the spark arresting screen.
N
Fit the exhaust pipe.
N
Fit the screws.
N
HS 87 R, HS 87 T