Stihl MS 230 Service Manual

13MS 210, MS 230, MS 250
Condition Cause Remedy
Engine will not idle,
idle speed too high
Throttle shutter opened too wide by
idle speed screw (LA)
Reset idle speed screw (LA)
correctly
Engine leaking Seal the engine
Engine stalls at idle speed Idle jet bores or ports blocked Clean jet bores and ports with
compressed air
Idle jet too rich Screw down low speed screw (L)
slightly
Setting of idle speed (LA)
incorrect – throttle shutter
completely closed
Set idle speed screw (LA) correctly
Small plastic plate in valve jet
does not close
Clean or renew valve jet
Engine speed drops quickly under
load – low power
Air filter plugged Clean or renew the air filter
Tank vent faulty Clean tank vent or replace if
necessary
Leak in fuel line between tank and
fuel pump
Seal connections or install new fuel
line
Pump diaphragm damaged or
fatigued
Fit a new pump diaphragm
Main jet bores or ports blocked Clean the bores and ports
Fuel pickup body dirty Clean the pickup body, fit a new
filter
Fuel strainers dirty Clean the fuel strainers

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")