Stihl MS 231 User Manual

2 MS 231, MS 231 C, MS 251, MS 251 C
Contents
12.6 Servicing
the Carburetor 90
12.6.1 Metering Diaphragm 90
12.6.2 Inlet Needle 90
12.6.3 Pump Diaphragm 91
12.6.4 Lever on
Throttle Shaft 92
12.6.5 Adjusting Screws 93
12.7 Adjusting
the Carburetor 95
12.7.1 Basic Setting 95
12.7.2 Standard setting 96
12.8 Carburetor Carrier 97
12.9 Intake Manifold 98
12.10 Tank Vent 99
12.10.1 Testing 99
12.10.2 Removing and
Installing 100
12.11 Fuel Intake 101
12.11.1 Pickup Body 101
12.11.2 Fuel Hose 101
12.11.3 Fuel Hoses –
Manual Fuel Pump 105
12.11.4 Manual Fuel Pump 107
12.11.5 Tank Housing 108
13. Special
Servicing Tools 110
14. Servicing Aids 112
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Stihl MS 231 Specifications

General

Power-to-Weight Ratio	2.4 kg/kW
Oilomatic Chain Pitch	3/8" P
Sound Pressure Level	103 dB(A)
Sound Power Level	114 dB(A)
Engine Power	2.0 kW
Weight	4.8 kg
Bar Length	35 cm / 40 cm
Fuel Capacity	390 cc
Chain Oil Capacity	200 ml
Vibration Level Left/Right	3.0/3.0 m/s²