Fuel - Stihl HL 75 Assembling, Safety Precautions, Operating Instructions, Maintenance

Overhead cut
(with angled cutter bar)
Hold the hedge cutter above your head
and swing it in an arc to make maximum
use of its reach.
Any working position above head
height is tiring. To minimize the risk
of accidents, work in such positions
for short periods only. Set angle of
adjustable cutter bar to maximum so
that the unit can be held in a lower,
less tiring position (with harness)
while still providing adequate
vertical reach.
HL 75, HL 75 K
Horizontal cut
(with straight cutter bar)
Cutting without standing directly in front
of the hedge, e.g. reaching over a
flowerbed.
English / USA

Fuel

This engine is certified to operate on
unleaded gasoline and with the mix
ratio 50:1.
Your two-stroke engine requires a
mixture of brand-name gasoline and
quality two-stroke engine oil with the
classification TC.
Use regular branded unleaded gasoline
with a minimum octane rating of 89
RON. If the octane rating of the regular
grade gasoline in your area is lower use
premium unleaded fuel.
Note: Units with a catalytic converter
require unleaded gasoline. The
efficiency of the catalytic converter can
drop more than 50 % if several tankfuls
of leaded gasoline are used.
Fuel with a lower octane rating may
result in preignition (causing "pinging")
which is accompanied by an increase in
engine temperature. This, in turn,
increases the risk of the piston seizure
and damage to the engine.
The chemical composition of the fuel is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines etc.), but magnesium castings as
well. This could cause running problems
or even damage the engine. For this
reason it is essential that you use only
name branded fuels!
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