MS 311, MS 391
English
53
Please enter your saw model, serial 
number as well as the part numbers of 
the guide bar and saw chain in the 
spaces provided. This will make re-
ordering simpler.
The guide bar and saw chain are subject 
to normal wear and tear. When 
purchasing these parts, always quote 
the saw model, the part numbers and 
names of the parts.
See "Specifications" in this manual for 
the recommended reduced kickback 
cutting attachments.
Users of this unit should carry out only 
the maintenance operations described 
in this manual. Other repair work may be 
performed only by authorized STIHL 
service shops.
Warranty claims following repairs can be 
accepted only if the repair has been 
performed by an authorized STIHL 
servicing dealer using original STIHL 
replacement parts.
Original STIHL parts can be identified by 
the STIHL part number, the { 
logo and, in some cases, by the STIHL 
parts symbol K. The symbol may 
appear alone on small parts.
Your Warranty Rights and 
Obligations
The U.S. Environmental Protection 
Agency (EPA) and STIHL Incorporated 
are pleased to explain the Emission 
Control System Warranty on your 
equipment type engine. In the U.S. new 
1997 and later model year small off-road 
equipment engines must be designed, 
built and equipped, at the time of sale, to 
meet the U.S. EPA regulations for small 
non road engines. The equipment 
engine must be free from defects in 
materials and workmanship which 
cause it to fail to conform with U.S. EPA 
standards for the first two years of 
engine use from the date of sale to the 
ultimate purchaser.
STIHL Incorporated must warrant the 
emission control system on your small 
off-road engine for the period of time 
listed below provided there has been no 
abuse, neglect or improper maintenance 
of your small off-road equipment engine.
Your emission control system includes 
parts such as the carburetor and the 
ignition system. Also included may be 
hoses, and connectors and other 
emission-related assemblies.
Where a warrantable condition exists, 
STIHL Incorporated will repair your 
small off-road equipment engine at no 
cost to you including diagnosis (if the 
diagnostic work is performed at an 
authorized dealer), parts and labor.
Ordering Spare Parts
Model
Serial number
Guide bar part number
Chain part number
Maintenance and Repairs STIHL Incorporated 
Federal Emission Control 
Warranty Statement