Instruction Manual
Table Of Contents
- STIHL MS 231, 251
- 1 Guide to Using this Manual
- 2 Safety Precautions
- 3 Reactive Forces
- 4 Working Techniques
- 5 Cutting Attachment
- 6 Mounting the Bar and Chain (side chain tensioner)
- 7 Mounting the Bar and Chain (quick chain tensioner)
- 8 Tensioning the Saw Chain (side chain tensioner)
- 9 Tensioning the Saw Chain (quick chain tensioner)
- 10 Checking Chain Tension
- 11 Fuel
- 12 Fueling
- 13 Chain Lubricant
- 14 Filling Chain Oil Tank
- 15 Checking Chain Lubrication
- 16 Chain Brake
- 17 Winter Operation
- 18 Starting / Stopping the Engine
- 18.1 Positions of Master Control Lever
- 18.2 Setting the Master Control Lever
- 18.3 Fuel pump
- 18.4 Holding the Saw
- 18.5 Cranking
- 18.6 Starting the Saw
- 18.7 When engine begins to fire
- 18.8 As soon as the engine runs
- 18.9 At very low outside temperatures
- 18.10 Stopping the engine
- 18.11 If the engine does not start
- 19 Operating Instructions
- 20 Taking Care of the Guide Bar
- 21 Shroud
- 22 Air Filter System
- 23 Cleaning the Air Filter
- 24 Adjusting the Carburetor
- 25 Spark Plug
- 26 Storing the Machine
- 27 Checking and Replacing the Chain Sprocket
- 28 Maintaining and Sharpening the Saw Chain
- 29 Maintenance and Care
- 30 Minimize Wear and Avoid Damage
- 31 Main Parts
- 32 Specifications
- 33 Ordering Spare Parts
- 34 Maintenance and Repairs
- 35 Disposal
- 36 EC Declaration of Conformity
18.4.2 Between knees or thighs
2310BA009 KN
► Hold the rear handle tightly between your legs,
just above the knees.
► Hold the front handle firmly with your left hand
– your thumb should be under the handle.
18.5 Cranking
18.5.1 Standard versions
231BA010 KN
► Pull the starter grip slowly with your right hand
until you feel it engage – and then give it a
brisk strong pull and push down the front han‐
dle at the same time. Do not pull out the
starter rope to full length – it might otherwise
break. Do not let the starter grip snap back.
Guide it slowly back into the housing so that
the starter rope can rewind properly.
Machines without additional manual fuel pump: If
the engine is new or after a long out-of-service
period, it may be necessary to pull the starter
rope several times to prime the fuel system.
18.5.2 Versions with ErgoStart
WARNING
This machine is extremely simple and easy to
start, even for children – risk of accidents.
Do not allow children or other unauthorized per‐
sons to attempt to start or otherwise use the
machine:
–
Never leave the machine unattended during
work breaks.
–
After work, store the machine in a safe, secure
location.
The ErgoStart stores the energy required to start
the saw. For this reason there may be a delay of
a few seconds between cranking the engine and
it actually starting.
There are two ways of starting with the Ergo‐
Start:
► Hold the starter grip with your right hand and
pull it out slowly and steadily –
or – hold the
starter grip with your right hand and give it
several short pulls, using only a short length of
rope for each pull.
► Push down the handle while cranking. Do not
pull out the rope to its full length – it might oth‐
erwise break.
► Do not let the starter grip snap back. Guide it
slowly back into the housing so that the starter
rope can rewind properly.
18.6 Starting the Saw
WARNING
Bystanders must be well clear of the general
work area of the saw.
► Observe safety precautions.
English 18 Starting / Stopping the Engine
26 0458-737-0121-C