Stihl MS 400 C-M User Manual

► Rotate the shroud fasteners (1) a quarter turn
counterclockwise.
► Remove the shroud (2).
► Pull off the spark plug boot (3).
► If area around the spark plug is dirty: Clean it
with a damp cloth.
► Unscrew the spark plug.
► Clean the spark plug with a damp cloth.
► If the spark plug is corroded: Install a new
spark plug.
3
0000-GXX-7214-A0
► Insert and tighten down the spark plug.
► Press the spark plug boot (3) firmly home.
► Place the shroud (2) in position.
► Rotate the shroud fasteners (1) a quarter turn
clockwise.
The shroud fasteners are locked.
16 Maintenance
16.1 Maintenance Intervals
The maintenance intervals are dependent on the
environmental and operating conditions. STIHL
recommends the following maintenance inter‐
vals:
Chain brake
► Have the chain brake serviced by a STIHL
servicing dealer at the following intervals:
–
Full-time usage: every 3 months
–
Part-time usage: every 6 months
–
Occasional usage: every 12 months
After every 100 hours of operation
► Install a new spark plug.
Weekly
► Check the chain sprocket.
► Check and deburr the guide bar.
► Check and sharpen the saw chain.
Monthly
► Clean the air filter.
► Have oil tank cleaned by a STIHL servicing
dealer.
► Have fuel tank cleaned by a STIHL servicing
dealer.
► Have pickup body (filter) in fuel tank cleaned
by a STIHL servicing dealer.
Every 12 months
► Have pickup body (filter) in fuel tank replaced
by a STIHL servicing dealer.
16.2 Deburring the Guide Bar
A burr can build up on the outer edge of the
guide bar.
► Remove burr with a flat file or a STIHL guide
bar dressing tool.
► If you have any queries: Contact your STIHL
servicing dealer.
16.3 Sharpening the Saw Chain
Correctly sharpening saw chains requires a lot of
practice.
STIHL files, STIHL filing aids, STIHL sharpeners
and the brochure “Sharpening STIHL Saw
Chains” help you achieve the right results. To
obtain the brochure visit http://www.stihl.com/
sharpening-brochure.
STIHL recommends you have saw chains
resharpened by a STIHL servicing dealer.
WARNING
■ The chain's cutters are very sharp. There is a
risk of cut injuries.
► Wear work gloves made of durable mate‐
rial.
0000-GXX-1219-A0
► File each cutter with a round file so that the
following points are observed:
–
Round file matches the chain pitch.
–
File from the inside to the outside of the cut‐
ter.
–
Hold the file at right angle to the guide bar.
–
Maintain a filing angle of 30°.
16 Maintenance English
0458-788-0121-B 25

Stihl MS 400 C-M Specifications

General

Idle speed	- RPM
Motor type	2-stroke motor
Chain pitch	3/8 \
Blade length	500 mm
Product color	Black, Grey, Orange
Automatic oiling	Yes
Engine displacement	66.8 cm³
Power source	Gasoline
Sound power level	118 dB
Vibration emission	3.5 m/s²
Sound pressure level	107 dB

Weight and Dimensions

Weight	5800 g