Stihl Chainsaws Ms 180 C Manual

MS 170, MS 170 C, MS 180, MS 180 C
English
19 Logs under strain:
Risk of pinching! Always start relieving 
cut (1) at compression side.Then make 
bucking cut (2) at tension side. If the saw 
pinches, stop the engine and remove it 
from the log.
Only properly trained professionals 
should work in an area where the logs, 
limbs and roots are tangled. Working in 
"blow down" areas is extremely 
hazardous. Drag the logs into a clear 
area before cutting. Pull out exposed 
and cleared logs first....

MS 170, MS 170 C, MS 180, MS 180 C
English
20 Escape Path
First clear the tree base and work area 
from interfering limbs and brush and 
clean its lower portion with an ax.
Then, establish two paths of escape (B) 
and remove all obstacles. These paths 
should be generally opposite to the 
planned direction of the fall of the tree 
(A) and about at a 45° angle. Place all 
tools and equipment a safe distance 
away from the tree, but not on the 
escape paths.Buttress Roots
If the tree has large buttress...

MS 170, MS 170 C, MS 180, MS 180 C
English
21 Open-face Technique
Felling notch (C) – determines the 
direction of the fall
For an open-face cut:
NProperly place felling notch 
perpendicular to the line of fall, 
close to the ground.
NCut down at approx. 50° angle to a 
depth of approx.1/5 to 1/4 of the 
trunk diameter.
NMake second cut from below at 
approx. 40 degree angle.
NRemove resulting 90° piece.Making Sapwood Cuts
NFor medium sized or larger trees 
make cuts at both sides of the trunk, 
at same...

MS 170, MS 170 C, MS 180, MS 180 C
English
22 E = Hinge
NHelps control the falling tree.
NDo not cut through the hinge – you 
could lose control of the direction of 
the fall.Felling Cut for Small Diameter Trees: 
Simple Fan Cut
Engage the bumper spikes of the chain 
saw directly behind the location of the 
intended hinge and pivot the saw around 
this point only as far as the hinge. The 
bumper spike rolls against the trunk.Felling Cut for Large Diameter Trees
WARNING
Felling a tree that has a diameter...

MS 170, MS 170 C, MS 180, MS 180 C
English
23 Avoid repositioning the saw more than 
necessary. When repositioning for the 
next cut, keep the guide bar fully 
engaged in the kerf to keep the felling 
cut straight. If the saw begins to pinch, 
insert a wedge to open the cut. On the 
last cut, do not cut the hinge.
Plunge-cut Method
Timber having a diameter more than 
twice the length of the guide bar requires 
the use of the plunge-cut method before 
making the felling cut.
First, cut a large, wide...

MS 170, MS 170 C, MS 180, MS 180 C
English
24
WARNING
Use only identical STIHL replacement 
parts for maintenance and repair. Use of 
non-STIHL parts may cause serious or 
fatal injury.
Strictly follow the maintenance and 
repair instructions in the appropriate 
section of your instruction manual. 
Please refer to the maintenance chart in 
this manual.
WARNING
Always stop the engine and make sure 
that the cutting tool is stopped before 
doing any maintenance or repair work or 
cleaning the power tool....

MS 170, MS 170 C, MS 180, MS 180 C
English
25 The chain saw should also be returned 
immediately for maintenance whenever 
the brake system cannot be thoroughly 
cleaned or there is a change in its 
operating characteristics.
For any maintenance of the emission 
control system please refer to the 
maintenance chart and to the limited 
warranty statement near the end of the 
instruction manual.
Do not clean your machine with a 
pressure washer. The solid jet of water 
may damage parts of the machine....

MS 170, MS 170 C, MS 180, MS 180 C
English
26
Removing the chain sprocket cover
NUnscrew the nut and remove the 
chain sprocket cover.
NTurn the screw (1) 
counterclockwise until the 
tensioning nut (2) butts against the 
left end of the housing slot.
Disengage the chain brake.
NPull the hand guard towards the 
front handle until there is an audible 
click – the chain brake is 
disengaged.
Fitting the chain
WARNING
Wear work gloves to protect your hands 
from the sharp cutters.
NFit the chain – start at...

MS 170, MS 170 C, MS 180, MS 180 C
English
27
Removing the chain sprocket cover
NSwing grip (1) into position (until it 
engages)
NTurn the wing nut (2) to the left until 
it hangs loosely in the chain 
sprocket cover (3)
NRemove chain sprocket cover (3)
Mounting the tensioning gear
NRemove and reverse tensioning 
gear (1)NRemove screw (2)
NPosition tensioning gear (1) and 
guide bar (3) relative to one another
NInsert and tighten screw (2)
Releasing the chain brake
NPull hand guard towards the front...

MS 170, MS 170 C, MS 180, MS 180 C
English
28 NFit the saw chain – starting at the 
nose of the guide bar – pay attention 
to the position of the tensioning gear 
and the cutting edges
NTurn tensioning gear (1) to the right 
as far as possible
NTurn the guide bar so that the 
tensioning gear faces the user
NPlace the saw chain on the chain 
sprocket (2)
NSlide the guide bar over the collar 
screw (3); the head of the rear collar 
screw must protrude into the oblong 
holeNGuide the drive link into the bar...