Instruction Manual

MS 880
English
45
N Turn the low speed screw (L)
counterclockwise, no further than
stop, until the engine runs and
accelerates smoothly.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Fine Tuning for Operation at High
Altitude
A slight correction of the setting may be
necessary if engine does not run
satisfactorily:
N Carry out the standard setting.
N Warm up the engine.
N Turn high speed screw (H) slightly
clockwise (leaner) – no further than
stop.
NOTICE
After returning from high altitude, reset
the carburetor to the standard setting.
If the setting is too lean there is a risk of
engine damage due to insufficient
lubrication and overheating.
N If engine performance deteriorates,
check the spark arresting screen in
the muffler
N Let the muffler cool down
Version A
N Remove screws (1)
N Remove the upper shell (2) of the
muffler
N Bend back the retaining lugs (3)
N Pull out spark arresting screen (4)
N Clean the dirty spark arresting
screen, replace if damaged or
heavily carbonized
N Refit the spark arresting screen in
reverse order of steps
Version B
N Remove screws (1)
N Remove the cover plate (2)
N Remove the spark arresting screen
(3)
N Clean the dirty spark arresting
screen, replace if damaged or
heavily carbonized
N Refit the spark arresting screen in
reverse order of steps
Spark Arresting Screen in
Muffler
1
1
2
216BA003 KN
1
1
3
3
216BA004 KN
3
1
1
1
171BA018 KN
2
1