Stihl MS 230 Service Manual

14 MS 210, MS 230, MS 250
4.6 Engine
Always check and, if necessary,
repair the following parts before
looking for faults on the engine:
– Air filter
– Fuel system
– Carburetor
– Ignition system
Condition Cause Remedy
Engine does not start easily, stalls
at idle speed, but operates normally
at full throttle
Oil seals in crankcase damaged Replace the oil seals
Gasket on carburetor spacer flange
leaking
Fit a new gasket
Engine pan leaking Seal the engine pan
Crankcase damaged (cracks) Replace the crankcase
Muffler leaking Seal or replace the muffler
Engine does not deliver full power
or runs erratically
Secondary air seepage through
leaking gaskets on carburetor
spacer flange
Fit new gaskets
Piston rings worn or broken Fit new piston rings
Muffler / spark arresting screen
carbonized
Clean the muffler (inlet and
exhaust), replace spark arresting
screen
Air filter element dirty Replace air filter element
Fuel / impulse line severely kinked
or damaged
Replace lines or position them free
from kinks
Decompression valve sticking Replace the decompression valve
Engine overheating Insufficient cylinder cooling. Air
inlets in fan housing blocked or
cooling fins on cylinder very dirty
Thoroughly clean all cooling air
openings and the cylinder fins

Stihl MS 230 Specifications

General

Engine Power	2.0 kW
Displacement	40.2 cc
Weight	4.6 kg
Power Output	2.0 kW
Chain Pitch	3/8"
Powerhead Weight	4.6 kg
Bar Length	40 cm
Oil Capacity	200 cc
Bar Lengths Available	35 cm (14") / 40 cm (16")