TABLE OF CONTENTS
CS-501SX, CS-501SXH
501sx 1
Page Page
1 SERVICE INFORMATION.....................................2
1-1 Specifications...................................................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 .....................................15
3-4 Inspecting ignition switch................................16
3-5 Replacing ignition switch................................16
3-6 Inspecting ignition coil resistance...................17
3-7 Replacing spark plug cap and coil..................18
3-8 Replacing ignition coil.....................................18
3-9 Setting pole shoe air gaps..............................19
3-10 Inspecting flywheel and key ...........................19
4 FUEL SYSTEM ...................................................21
4-1 Inspecting air filter..........................................22
4-2 Inspecting fuel cap and fuel strainer...............22
4-3 Inspecting fuel tank and line...........................23
4-4 Inspecting and replacing tank vent.................24
4-5-1 Replacing fuel line..........................................26
4-5-2 Replacing fuel vent pipe.................................27
4-6 Adjusting carburetor.......................................28
4-6-1 General adjustment rules...............................28
4-6-2 Initial setting Throttle adjust screw, L mixture
needle and H mixture needle .........................28
4-6-3 Adjusting carburetor.......................................29
4-7 Air shutter.......................................................30
4-8 Testing carburetor...........................................31
4-9 Inspecting crankcase pulse passage .............32
4-10 Inspecting metering lever height ....................32
4-11 Inspecting inlet needle valve..........................33
4-12 Inspecting diaphragm.....................................33
4-13 Replacing Welch plug.....................................34
4-14 Installing carburetor........................................35
5 CLUTCH SYSTEM..............................................36
5-1 Inspectng clutch parts ....................................37
5-2 Replacing clutch parts....................................38
5-3 Installing clutch assembly...............................38
6 CHAIN BRAKE SYSTEM....................................40
6-1 Disassembling chain brake ............................41
6-2 Assembling brake parts..................................42
7 SAW CHAIN LUBRICATION SYSTEM...............43
7-1 Inspecting oil cap and strainer........................44
7-2 Inspecting auto-oiler assembly and oil line.....45
7-3 Inspecting oil tank vent...................................46
8 ENGINE...............................................................47
8-1 Testing cylinder compression.........................48
8-2 Cleaning cooling air passages .......................48
8-3 Inspecting muffler and exhaust port...............49
8-4 Testing crankcase and cylinder seal...............50
8-5 Inspecting cylinder..........................................51
8-6 Inspecting piston and piston ring....................52
8-7 Replacing oil seal...........................................53
8-8 Disassembling crankcase...............................54
8-9 Replacing ball bearing and oil seal.................54
8-10 Assembling crankshaft and crankcase...........55
8-11 Installing piston...............................................56
8-12 Installing piston ring and cylinder...................57
9 REAR HANDLE AND CONTROL SYSTEM.......58
9-1 Replacing cushions........................................59
9-2 Replacing throttle trigger................................61
9-3 Service hint for heated handle (CS-501SXH only) ...63
9-3-1 Inspecting heated handle...............................64
9-3-2 Replacing stator assembly.............................66
9-3-3 Replacing rear handle heater.........................67
9-3-4 Replacing heater switch.................................69
10 GUIDE BAR MOUNTING SYSTEM..................70
10-1 Replacing chain tensioner..............................71
10-2 Replacing guide bar stud................................71
10-3 Installing guide bar stud .................................72
11 MAINTENANCE GUIDE....................................73
11-1 Disassembly Chart.........................................73
11-2 Troubleshooting guide....................................74
11-3 Service Intervals.............................................76
