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Condition
Engine running extremely rich, has
no power and a very low maximum
speed
16
Cause
Choke shutter does not open fully
Models with M-Tronic, carburetor
setting too rich
Remedy
Check carburetor and choke shaft,
service or replace if necessary
Check M-Tronic with STIHL MDG 1
and troubleshooting chart, b 8.7,
adjust or calibrate control unit,
b 8.1
MS 661, MS 661 C-M
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- Ignition System
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Table of Contents
Troubleshooting
