Stihl MS 170 User Manual

33MS 170, MS 180, MS 180 C
English / USA
Retensioning during cutting work:
: Shut off the engine first –
and then loosen the nuts.
: Hold the bar nose up and use
screwdriver to turn tensioning screw
(1) clockwise until chain fits snugly
against the underside of the bar.
: While still holding the bar nose up,
tighten down the nuts firmly.
: Go to “Tensioning the Saw Chain”.
A new chain has to be retensioned more
often than one that has been in use for
some time.
: Check chain tension frequently –
see "Operating Instructions".
Retensioning during cutting work:
: Shut off the engine.
: Pull out the hinged clip and loosen
the wingnut.
: Turn the adjusting wheel (1)
clockwise as far as stop.
: Tighten down the wingnut (2) firmly
by hand.
: Fold down the hinged clip.
: Follow instructions in "Checking
Chain Tension".
A new chain has to be retensioned more
often than one that has been in use for
some time.
: Check chain tension frequently –
see "Operating Instructions".
: Shut off the engine.
: Wear work gloves.
: Chain must fit snugly against the
underside of the bar – and, with the
chain brake disengaged, it must still
be possible to pull the chain along
the bar by hand.
: If necessary, retension the chain.
A new chain has to be retensioned more
often than one that has been in use for
some time.
Check chain tension frequently – see
"Operating Instructions".
Tensioning the Saw Chain
(Front chain tensioner)
1
143BA045 KN
Tensioning the Saw Chain
(Quick chain tensioner)
1
2
001BA112 KN
Checking Chain Tension
143BA007 KN

Stihl MS 170 Specifications

General

Idle speed	- RPM
Chain pitch	3/8 \
Blade length	350 mm
Product color	Black, Orange, White
Automatic oiling	Yes
Oil tank capacity	0.145 L
Fuel tank capacity	0.25 L
Engine displacement	30.1 cm³
Engine power	1.7 hp
Power source	Gasoline

Weight and Dimensions

Weight	3900 g