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
1
2011BA002 KN
2
► Unscrew the nut (1) and remove the sprocket
cover (2).
2011BA029 KN
► Pull off the spark plug boot.
► Unscrew the spark plug.
20.2 Checking the Spark Plug
000BA039 KN
A
► Clean dirty spark plug.
► Check electrode gap (A) and readjust if neces‐
sary – see "Specifications".
► Rectify the problems which have caused foul‐
ing of the spark plug.
Possible causes are:
–
Too much oil in fuel mix.
–
Dirty air filter.
–
Unfavorable running conditions.
1
000BA045 KN
WARNING
Arcing may occur if the adapter nut (1) is loose
or missing. Working in an easily combustible or
explosive atmosphere may cause a fire or an
explosion. This can result result in serious inju‐
ries or damage to property.
► Use resistor type spark plugs with a properly
tightened adapter nut.
20.3 Installing the spark plug
► Install the spark plug and connect the spark
plug boot (press it down firmly) – reassembly
all other parts in the reverse sequence.
21 Storing the Machine
For periods of 3 months or longer
► Drain and clean the fuel tank in a well ventila‐
ted area.
► Dispose of fuel properly in accordance with
local environmental requirements.
► Run the engine until the carburetor is dry – this
helps prevent the carburetor diaphragms stick‐
ing together.
► Remove the saw chain and guide bar, clean
them and spray with corrosion inhibiting oil.
► Thoroughly clean the machine – pay special
attention to the cylinder fins and air filter.
► If you use a biological chain and bar lubricant,
e.g. STIHL BioPlus, completely fill the chain oil
tank.
► Store the machine in a dry, high or locked
location, out of the reach of children and other
unauthorized persons.
22 Checking the Chain
Sprocket
► Disengage the chain brake: Pull the hand
guard toward the front handle.
► Remove chain sprocket cover, saw chain and
guide bar
English 21 Storing the Machine
28 0458-506-0121-B