Stihl MS 250 Service Manual

37MS 210, MS 230, MS 250
If no fault is found, perform the
following additional checks:
– Check flywheel for damage –
b 7.4.2.
– Check air gap between flywheel
and ignition module – b 7.5.
If no fault is detected in these areas
either, install a new ignition module
– b 7.4.2.
Ignition timing is not adjustable.
Since there is no mechanical wear
in these systems, ignition timing
cannot get out of adjustment.
However, an internal fault in the
circuit can alter the switching point
in such a way that a spark test will
still show the system to be in order
although timing is outside the
permissible tolerance. This will
impair engine starting and running
behavior. – Remove the fan housing –
b 8.2.
: Pull the short circuit wire off the
tag on the ignition module.
VA
135RA111
: Take out the screws (arrows).
VA
135RA112
– Pull the ignition module forward a
little.
: Take the short circuit wire (1) out
of the retainer (2).
VA
208RA110
2
1
7.4.1 Ignition Timing 7.4.2 Removing and Installing

Stihl MS 250 Specifications

General

Engine Power	2.3 kW
Power output	2.3 kW
Displacement	45.4 cc
Weight	4.6 kg
Weight (without cutting equipment)	4.6 kg
Fuel Capacity	0.47 l
Fuel tank volume	0.47 l
Bar Length	40 cm
Chain Oil Capacity	0.20 l
Oil Capacity	0.20 l
Chain pitch	3/8"