Instruction Manual
Table Of Contents
- STIHL MS 151 C
- 1 Guide to Using this Manual
- 2 Safety Precautions
- 3 Reactive Forces
- 4 Working Techniques
- 5 Cutting Attachment
- 6 Mounting the Bar and Chain
- 7 Tensioning the Saw Chain (side chain tensioner)
- 8 Checking Chain Tension
- 9 Fuel
- 10 Fueling
- 11 Chain Lubricant
- 12 Filling Chain Oil Tank
- 13 Checking Chain Lubrication
- 14 Chain Brake
- 15 Starting / Stopping the Engine
- 15.1 Positions of the Master Control lever
- 15.2 Positions of Choke Shutter
- 15.3 Adjust Master Control lever
- 15.4 Manual fuel pump
- 15.5 Holding the Chain Saw
- 15.6 Actuating
- 15.7 Starting the Chainsaw
- 15.8 When Engine Begins to Fire
- 15.9 As Soon As the Engine Runs
- 15.10 At Very Low Outside Temperatures
- 15.11 Shut off the engine
- 15.12 If Engine Does Not Start
- 15.13 If Fuel Tank Has Been Run Completely Dry and Then Refueled
- 16 Operating Instructions
- 17 Taking Care of the Guide Bar
- 18 Cleaning the Air Filter
- 19 Adjusting the Carburetor
- 20 Spark Plug
- 21 Storing the Machine
- 22 Checking the Chain Sprocket
- 23 Maintaining and Sharpening the Saw Chain
- 24 Maintenance and Care
- 25 Minimize Wear and Avoid Damage
- 26 Main Parts
- 27 Specifications
- 28 Special Accessories
- 29 Ordering Spare Parts
- 30 Maintenance and Repairs
- 31 Disposal
- 32 EC Declaration of Conformity
–
Clear escape paths, eliminate obstacles
–
Put down tools and equipment at a safe dis‐
tance – but not on the escape paths
–
When felling, stand only to the side of the fall‐
ing trunk and only move back laterally onto the
escape path
–
Plan escape paths on slopes parallel to the
slope
–
When walking away along the escape path,
watch out for falling limbs and watch the top of
the tree.
Preparing work area at base of tree
–
First clear the tree base and work area from
interfering limbs and brush to provide a secure
footing.
–
Carefully clear the base of the trunk (e.g., with
an axe) – sand, stones and other foreign
objects will blunt the saw chain
001BA146 KN
–
Remove largest buttresses: first the largest
buttress – saw first vertically, then horizontally
– only if the tree is in sound condition
4.3 Felling notch
Preparing the felling notch
001BA271 KN
C
C
The felling notch (C) determines the direction of
fall.
Important:
–
Make a felling notch at right angle to direction
of fall
–
Saw as close to the ground as possible
–
Cut to a depth of approx. 1/5 to 1/3 of the
diameter of the trunk
Specify the direction of fall – without the gunning
sight on the shroud and fan housing
If the chain saw is designed without the gunning
sight on the shroud and fan housing, the direc‐
tion of fall can be determined or controlled using
a meter stick:
001BA246 KN
► Snap the meter stick in the middle and create
an isosceles triangle
► Position both ends of the meter stick in the
front trunk area (1/5 to max. 1/3 of the trunk
diameter) – align the tip of the meter stick in
the defined direction of fall
► Mark the trunk at both ends of the meter stick
to limit the felling notch
Making the felling notch
001BA247 KN
When making a felling notch, align the chainsaw
so that the notch lies at a right angle to the direc‐
tion of fall.
During the procedure, various sequences are
permitted for making a felling notch with a bottom
(horizontal) cut and top (angled) cut – comply
with national legislation regarding felling techni‐
que.
► Make the bottom cut (horizontal cut) – until the
guide bar reaches both markings
► Make the top (angled) cut approx. 45°‑ 60° to
the bottom cut
4 Working Techniques English
0458-506-0121-B 11