Stihl MS 661 Instruction Manual

MS 661
English
19
Removing the chain sprocket cover
N Turn the captive nuts to the left until
it hangs loosely in the chain
sprocket cover
N Remove chain sprocket cover and
captive nuts
N Turn screw (1) to the left until the
tensioner slide (2) butts against the
left end of the housing slot
Releasing the chain brake
N Pull hand guard towards the front
handle until it engages audibly –
chain brake is released
Fitting the saw chain
WARNING
Put on protective gloves – risk of injury
by the sharp cutters
N Fit the chain starting at the nose of
the guide bar
N Position the guide bar over the
bolts (1) – the cutting edges of the
saw chain must point to the right
N Position the locating hole (2) over
the peg of the tensioner slide –
simultaneously place the saw chain
over the sprocket wheel (3)
N Turn screw (4) to the right until there
is very little chain sag on the
underside of the bar – and the drive
link tangs engage in the bar groove
N Refit the chain sprocket cover – and
then screw on the nut by hand until
it is fingertight (only tighten the nuts
after the saw chain has been
tensioned)
N Go to chapter "Tensioning the saw
chain"
Mounting the Bar and Chain
1166BA040 KN
1
2
001BA185 KN
001BA186 KN
143BA003 KN
3
1
1
2
4
001BA187 KN

Stihl MS 661 Specifications

General

Displacement	91.1 cc
Chain Pitch	3/8"
Engine Power	5.4 kW
Fuel Capacity	825 ml
Chain Oil Capacity	360 ml
Guide Bar Lengths	90 cm