Stihl MS 311 Manual

42 MS 311, MS 391
While using the ZAT 3, hold it only
by the handle (4) or position it in a
safe place. Keep fingers or other
parts of your body at least 1 cm
away from the spark window (3),
high voltage connection (2), ground
connection (5) and the ground
terminal (1).
High voltage – risk of electric shock.
– Crank the engine quickly with the
rewind starter and check spark in
the tester’s window (3).
The engine may start and
accelerate during the test.
If a spark is visible in the window (3),
the ignition system is in order.
– If no spark is visible in the
window (3), check the ignition
system with the aid of the
troubleshooting chart, b 7.8
165RA185 TG
1
2
3 4
5
7.5 Spark Plug Boot /
Ignition Lead
The ignition module (1) and ignition
lead (2) form a unit. A new ignition
module must be installed if the
ignition lead is damaged.
– Remove the shroud, b 6.4
: Use suitable pliers to pull the leg
spring out of the spark plug boot.
– Unhook the leg spring from the
ignition lead.
– Pull the boot off the ignition lead.
– Remove the sleeve.
4903RA227 TG
Installing
Do not shorten the ignition lead.
– Use a pointed tool to pierce the
center of the new ignition lead’s
insulation, about 15 mm from the
end of the lead.
: Pinch the hook of the leg spring
into the pierced hole in the center
of the lead (arrow).
– Coat the inside of the spark plug
boot with
STIHL press fluid, b 14
: Hold the ignition lead and leg
spring together and push them
into the spark plug boot.
165RA188 TG4903RA228 TG

Stihl MS 311 Specifications

General

Oil tank capacity	0.348 L
Fuel tank capacity	0.6 L
Power source	Gasoline

Weight and Dimensions

Weight	6200 g