TABLE OF CONTENTS
CS-2510TES
250Ts, 250TCs
1
Page Page
1 SERVICE INFORMATION
..................................... 2
1-1 Specifi cations ...................................................2
1-2 Technical data ..................................................3
1-3 Torque limits .....................................................4
1-4 Special repairing materials ...............................4
1-5 Service limits ....................................................5
1-6 Special tools .....................................................6
2 STARTER SYSTEM
..............................................7
2-1 Disassembling starter assembly .......................8
2-2 Replacing starter rope ......................................9
2-3 Assembling starter ..........................................10
2-4 Replacing starter pawl ....................................12
3 IGNITION SYSTEM
............................................. 13
3-1 Troubleshooting guide ....................................14
3-2 Testing spark ..................................................15
3-3 Inspecting spark plug .....................................16
3-4 Replacing spark plug cap and coil..................16
3-5 Inspecting ignition switch ................................17
3-6 Replacing ignition switch ................................17
3-7 Replacing ignition coil .....................................22
3-8 Setting pole shoe air gaps ..............................23
3-9 Inspecting fl ywheel and key ...........................23
4 FUEL SYSTEM
...................................................25
4-1 Inspecting air fi lter ..........................................26
4-2 Inspecting fuel cap and fuel strainer...............27
4-3 Inspecting fuel tank and line ...........................28
4-4 Inspecting and replacing tank vent .................29
4-5 Replacing purge bulb .....................................31
4-6 Replacing fuel line and fuel return line ...........32
4-7 Adjusting carburetor .......................................34
4-7-1 General adjusting rules ..................................34
4-7-2 Presetting idle adjust screw, L mixture
needle and H mixture needle .........................34
4-7-3 Adjusting carburetor .......................................35
4-8 Testing carburetor ...........................................36
4-9 Inspecting crankcase pulse passage .............37
4-10 Inspecting metering lever height ....................37
4-11 Inspecting inlet needle valve ..........................38
4-12 Inspecting diaphragm and others ...................39
4-13 Replacing welch plug .....................................39
4-14 Installing carburetor ........................................40
5 CLUTCH SYSTEM
..............................................41
5-1 Inspecting clutch parts ....................................41
5-2 Replacing clutch parts ....................................43
5-3 Installing clutch assembly ...............................43
6 CHAIN BRAKE SYSTEM
....................................44
6-1 Replacing brake lever and torsion spring .......44
6-2 Inspecting chain brake parts ..........................46
7 SAW CHAIN LUBRICATION SYSTEM
...............48
7-1 Inspecting oil cap and strainer ........................48
7-2 Inspecting oil tank vent ...................................49
7-3 Inspecting and replacing oil line .....................50
7-4 Inspecting worm gear .....................................51
7-5 Cleaning and replacing auto-oiler assembly ..52
8 ENGINE
............................................................... 55
8-1 Testing cylinder compression .........................56
8-2 Cleaning cooling air passages .......................57
8-3 Inspecting muffl er and exhaust port ...............58
8-4 Testing crankcase and cylinder sealings ........59
8-5 Removing engine block ..................................60
8-6 Inspecting cylinder ..........................................61
8-7 Inspecting piston and piston ring ....................62
8-8 Replacing oil seal ...........................................63
8-9 Inspecting crankcase and crankshaft .............64
8-10 Replacing oil seal and ball bearing.................65
8-11 Assembling crankshaft and crankcase ...........66
8-12 Installing piston ring and cylinder ...................67
9 HANDLE AND CONTROL SYSTEM
..................68
9-1 Replacing throttle control parts .......................69
9-2 Replacing front handle and spring..................70
9-3 Replacing rear handle and springs.................71
10 GUIDE BAR MOUNTING SYSTEM
..................74
10-1 Replacing nut for fi xing guide bar ...................74
10-2 Replacing chain tensioner ..............................75
10-3 Replacing guide bar stud ................................75
11 MAINTENANCE GUIDE
.................................... 76
11-1 Troubleshooting guide ....................................76
11-2 Disassembly chart ..........................................78
11-3 Service intervals .............................................79
INDEX
......................................................................80
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