Echo CS-350WES Service Manual

CS-350WES
1
TABLE OF CONTENTS
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 (Effortless starter) .............. 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 ........................................... 14
3-1 Troubleshooting guide .................................. 15
3-2 Testing spark................................................. 16
3-3 Checking spark plug ..................................... 16
3-4 Checking ignition switch and leads .............. 17
3-5 Replacing ignition switch .............................. 18
3-6 Checking ignition coil resistance .................. 18
3-7 Removing ignition coil................................... 19
3-8 Replacing spark plug cap and coil................ 19
3-9 Installing ignition coil..................................... 20
3-10 Setting pole shoe air gaps ............................ 21
3-11 Replacing flywheel........................................ 21
4 FUEL SYSTEM .................................................. 23
4-1 Checking air filter .......................................... 24
4-2 Checking fuel cap and strainer ..................... 25
4-3 Replacing primer .......................................... 25
4-4 Checking fuel tank and pipe ......................... 26
4-5 Checking and replacing fuel vent ................. 27
4-6 Replacing fuel pipe ....................................... 28
4-7 Removing carburetor .................................... 29
4-8 Testing carburetor ......................................... 30
4-9 Checking metering lever height .................... 31
4-10 Checking disphragm ..................................... 31
4-11 Checking inlet needle valve.......................... 32
4-12 Replacing Welch plug ................................... 32
4-13 Checking crankcase pulse passage............. 33
4-14 Installing carburetor ...................................... 33
4-15 Adjusting carburetor ..................................... 34
4-15-1 Presetting idle adjust screw, L mixture
needle and H mixture needle ................... 35
4-15-2 Adjusting carburetor ................................. 37
5 CLUTCH SYSTEM ............................................ 38
5-1 Checking clutch parts ................................... 38
5-2 Replacing clutch parts .................................. 39
5-3 Installing clutch assembly............................. 39
6 SAW CHAIN LUBRICATION SYSTEM ............. 40
6-1 Checking oil cap and strainer ....................... 40
6-2 Checking oil pipe .......................................... 41
6-3 Checking oil tank check valve ...................... 41
6-4 Replacing oil pipe and grommet ................... 42
6-5 Checking auto-oiler assembly ...................... 42
6-6 Removing worm gear ................................... 42
6-7 Installing worm gear ..................................... 43
6-8 Installing auto-oiler assembly ....................... 43
7 ENGINE ............................................................. 44
7-1 Cleaning cooling air passage ....................... 45
7-2 Checking muffler and exhaust port............... 45
7-3 Testing cylinder compression ....................... 46
7-4 Testing crankcase and cylinder sealing........ 46
7-5 Removing engine block ................................ 47
7-6 Checking cylinder ......................................... 47
7-7 Checking piston and piston ring ................... 48
7-8 Checking crankcase and crankshaft ............ 48
7-9 Replacing oil seal and ball bearing............... 49
7-10 Installing piston and piston ring .................... 49
7-11 Installing piston into cylinder ........................ 50
7-12 Installing engine block .................................. 50
8 CHAIN BRAKE SYSTEM .................................. 51
8-1 Disassembling chain brake........................... 51
8-2 Assembling brake parts ................................ 52
9 HANDLE AND CONTROL SYSTEM ................ 53
9-1 Removing front handle ................................. 53
9-2 Installing front handle ................................... 53
9-3 Removing rear handle .................................. 54
9-4 Replacing throttle trigger .............................. 56
9-5 Installing rear handle .................................... 58
10 GUIDE BAR MOUNTING SYSTEM ................ 62
10-1 Replacing chain tensioner ............................ 62
10-2 Replacing guide bar stud.............................. 63
11 MAINTENANCE GUIDE .................................. 64
11-1 Disassembly Chart ....................................... 64
11-2 Troubleshooting guide .................................. 65
11-3 Service Intervals ........................................... 67
INDEX .................................................................... 68

Echo CS-350WES Specifications

General

Brand	Echo
Model	CS-350WES
Category	Chainsaw
Language	English