HT 250
English
42
damages to other engine components 
caused by the failure of a warranted part 
still under warranty.
The following list specifically defines the 
emission-related warranted parts:
– Air Filter
– Carburetor (if applicable)
– Fuel Pump
– Choke (Cold Start Enrichment 
System) (if applicable)
– Control Linkages
– Intake Manifold
– Magneto or Electronic Ignition 
System (Ignition Module or 
Electronic Control Unit)
– Fly Wheel
– Spark Plug
– Injection Valve (if applicable)
– Injection Pump (if applicable)
– Throttle Housing (if applicable)
– Cylinder
– Muffler
– 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 product to any authorized 
STIHL servicing dealer and present the 
signed warranty card.
Maintenance Requirements
The maintenance instructions in this 
manual are based on the application of 
the recommended 2-stroke fuel-oil 
mixture (see also instruction "Fuel"). 
Deviations from this recommendation 
regarding quality and mixing ratio of fuel 
and oil may require shorter maintenance 
intervals.
Limitations
This Emission Control Systems 
Warranty shall not cover any of the 
following:
N repair or replacement required 
because of misuse, neglect or lack 
of required maintenance,
N repairs improperly performed or 
replacements not conforming to 
STIHL Incorporated specifications 
that adversely affect performance 
and/or durability, and alterations or 
modifications not recommended or 
approved in writing by STIHL 
Incorporated,
and
N replacement of parts and other 
services and adjustments 
necessary for required maintenance 
at and after the first scheduled 
replacement point.
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