Fuel - Stihl MS 380 Manual

Fuel

Your engine requires a mixture of
gasoline and engine oil.
The quality of these constituents and the
mix ratio have a decisive influence on
the function and service life of the
engine.
Unsuitable fuels or lubricants or mix
ratios other than those specified
may result in serious damage to the
engine (piston seizure, rapid rate of
wear, etc.).
Gasoline
Use only high-quality mid-grade
gasoline with a minimum octane rating
of 90. If the octane rating of the mid-
grade gasoline in your area is lower, use
premium fuel – leaded or unleaded.
For health and environmental
reasons, you should give
preference to unleaded gasoline.
If your machine is equipped with a
catalytic converter, you must use
unleaded gasoline.
A few tankfuls of leaded gasoline
will greatly reduce the efficiency of
the catalytic converter.
MS 380
Engine Oil
Use only quality two-stroke engine oil.
We recommend STIHL two-stroke
engine oil since it is specially
formulated for use in STlHL engines
and guarantees a long engine life.
Use only STIHL 50:1 two-stroke
engine oil for the fuel mix in models with
a catalytic converter.
If no STIHL two-stroke engine oil is
available, use only quality two-stroke oil
designed for use in air cooled engines.
Do not use oils designed for water
cooled engines or engines with a
separate lubricating system (e.g.
conventional four-stroke engines).
Poor quality gasoline or engine oil
may damage the engine, sealing
rings, hoses and the fuel tank.
Mixing Fuel
1
2
MIX
Avoid direct skin contact with
gasoline and avoid inhaling
gasoline vapor.
:
Use a canister approved for storing
fuel. Pour oil (1) into the canister
first, then add gasoline (2) and mix
thoroughly.
Mix Ratio
STIHL 50:1 two-stroke engine oil:
50 parts gasoline to 1 part oil
Other high-quality two-stroke engine
oils:
25 parts gasoline to 1 part oil
English
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