FS 40, FS 40 C, FS 50, FS 50 C
English
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damages to other engine components 
caused by the failure of a warranted part 
still under warranty.
Emission Warranty Parts List
Air Filter, Carburetor, Fuel Pump, Choke 
(Cold Start Enrichment System), Control 
Linkages, Intake Manifold, Magneto or 
Electronic Ignition System (Ignition 
Module), Spark Plug, Catalytic 
Converter (if applicable), Fuel Tank, 
Fuel Cap, Fuel Line, Fuel Line Fittings, 
Clamps, Fasteners
Where to make a Claim for Warranty 
Service
Bring the STIHL product to any 
authorized STIHL servicing dealer and 
present the signed STIHL product 
registration card, or the print-out of the 
electronic product registration.
Limitations
The repair or replacement of any 
warranted part otherwise eligible for 
warranty coverage may be excluded 
from such warranty coverage if STIHL 
Incorporated demonstrates that the 
STIHL product has been abused, 
neglected, or improperly maintained, 
and that such abuse, neglect, or 
improper maintenance was the direct 
cause of the need for repair or 
replacement of the part. That 
notwithstanding, any adjustment of a 
component that has a factory installed, 
and properly operating, adjustment 
limiting device is still eligible for warranty 
coverage.
STIHL Registered Trademarks
STIHL
®
{
K
The color combination orange-grey 
(U.S. Registrations #2,821,860; 
#3,010,057, #3,010,058, #3,400,477; 
and #3,400,476)
4-MIX
®
AUTOCUT
®
EASYSTART
®
FARM BOSS
®
iCademy
®
OILOMATIC
®
STIHL Cutquik
®
STIHL DUROMATIC
®
STIHL Quickstop
®
STIHL ROLLOMATIC
®
STIHL WOOD BOSS
®
TIMBERSPORTS
®
WOOD BOSS
®
YARD BOSS
®
Some of STIHL’s Common Law 
Trademarks
BioPlus ™
Easy2Start ™
EasySpool ™
ElastoStart ™
Ematic ™
FixCut ™
HT Plus ™
IntelliCarb ™
Master Control Lever ™
Micro ™
Pro Mark ™
Quad Power ™
Quiet Line ™
STIHL Compact ™
STIHL HomeScaper Series ™
STIHL Interchangeable Attachment 
Series ™
STIHL M-Tronic ™
STIHL Magnum ™
STIHL MiniBoss ™
STIHL MotoPlus 4 ™
STIHL Multi-Cut HomeScaper Series ™
STIHL OUTFITTERS ™
STIHL PICCO ™
STIHL PolyCut ™
STIHL PowerSweep ™
Trademarks