3
Contents
Decals and symbols............................................................................................................ 4
Rules for safe operation...................................................................................................... 5
0. Tree service chain saw.............................................................................................. 5
1. General precautions .................................................................................................. 8
2. Kickback safety precautions .................................................................................... 11
3. Other safety precautions.......................................................................................... 12
Description........................................................................................................................ 14
Assembly .......................................................................................................................... 15
Mounting guide bar and chain ..................................................................................... 15
Checking lifting hook.................................................................................................... 16
Operation .......................................................................................................................... 17
Fuel and lubricant ........................................................................................................ 17
Chain lubricant............................................................................................................. 17
Cap indication.............................................................................................................. 17
Winter operation .......................................................................................................... 18
Starting the cold engine............................................................................................... 18
Starting the warm engine............................................................................................. 19
Running ....................................................................................................................... 19
Stopping the engine..................................................................................................... 20
Checking chain tension................................................................................................ 20
Chain lubrication test ................................................................................................... 20
Pre cutting test............................................................................................................. 20
Correct use of chain brake................................................................................................ 21
Chain brake ................................................................................................................. 21
Checking the brake function of the brake .................................................................... 22
Release the chain brake.............................................................................................. 22
Non-manual chain brake.............................................................................................. 22
Cutting instruction .............................................................................................................23
General........................................................................................................................23
Felling a tree................................................................................................................ 24
Limbing ........................................................................................................................25
Bucking........................................................................................................................ 25
Tension and compression in timber............................................................................. 26
Service maintenance guide .............................................................................................. 27
Troubleshooting ................................................................................................................ 28
Saw chain maintenance.................................................................................................... 29
Service.............................................................................................................................. 31
Air filter ........................................................................................................................ 31
Check fuel system ....................................................................................................... 31
Fuel filter......................................................................................................................31
Oil filter ........................................................................................................................ 31
Spark plug ................................................................................................................... 31
Spark plug cover.......................................................................................................... 32
Guide bar..................................................................................................................... 32
Sprocket / Clutch drum ................................................................................................ 32
Carburettor .................................................................................................................. 32
Automatic oiler............................................................................................................. 33
Cylinder fins (Cooling system)..................................................................................... 33
Silencer........................................................................................................................33
Replacement guide bar and chain............................................................................... 34
Storage ............................................................................................................................. 35
Long term storage (Over 30 days)............................................................................... 35
Disposal procedure........................................................................................................... 36
Specifications.................................................................................................................... 37
(251Ts) ........................................................................................................................ 37
(251TCs)...................................................................................................................... 38
Declaration of conformity .................................................................................................. 39