STIHL 046 Chainsaw Owners Manual

Tensioning the Saw Chain
Checking Chain Tension
Fuel
This engine is certified to operate on
unleaded gasoline and oil 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.
1
Use regular branded unleaded gasoline
with a minimum octane rating of
Retensioning during cutting work:
Wear work gloves.
Turn off  the engine -
Chain must fit snugly against the
90 ROZ (U.S.A./Canada: pump octane
min. 89!). If the octane number of the
regular grade gasoline in your area is
lower, use premium unleaded fuel.
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 piston seizure
and damage to the engine.
and then slacken the nuts.
underside of the bar -
and, with the chain brake
disengaged, it must still be possible
to pull the chain along the bar
by hand.
Hold the bar nose up -
and use screwdriver to turn
tensioning screw (1) clockwise until
chain fits snugly against
If necessary, retension the chain.
the underside of the bar -
while still holding bar nose up,
tighten down the nuts firmly.
A new chain has to be retensioned more
often than one that has been in use for
some time.
Go to section "Checking Chain
Tension".
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
branded fuels!
Check chain tension frequently -
see section "During Operation".
Use only STIHL two-stroke engine oil or
equivalent branded two-stroke air-
cooled engine oils with the classification
TC for mixing.
26
046
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CategoriesChainsaw Manuals, STIHL Chainsaw Manuals
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- 55 pages
LanguageEnglish
Product BrandSTIHL. Stihl Inc, USA - Corporate phone: (757) 486-9100. International Support Information: http://stihl.com Email: info@stihl.com, Chainsaw
Document File TypePDF
Publisherstihl.com
Wikipedia's PageStihl
CopyrightAttribution Non-commercial
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