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Stihl MS 441, MS 441 C & Spare Parts List Workshop Service Repair Manual

Stihl MS 441, MS 441 C & Spare Parts List Workshop Service Repair Manual

Stihl MS 441, MS 441 C Chainsaw & Parts Workshop Service Repair Manual

This service manual contains detailed descriptions of all the typical repair and servicing procedures for this power tool. You should make use of the illustrated parts lists while carrying out repair work. They show the installed positions and sequence of steps for the individual components and assemblies. Always refer to the latest edition of the relevant parts list to check the part numbers of any replacement parts. A fault on the machine may have several causes. To help locate the fault, consult the chapter on “Troubleshooting” and the “STIHL Service Training System” for all functional groups. Refer to the Technical Information bulletins for engineering changes which have been introduced since publication of this service manual. Technical information bulletins also supplement the parts list and service manual until an updated edition is issued. The special tools mentioned in the descriptions are listed in the chapter “Special Tools” of this manual. Use the part numbers to identify the tools in the “STIHL Tools” manual which lists all the tools currently available from STIHL.


MS441 Service Manual

This Manual Covers

MS441 Service Manual 1
Contents 2
1. Introduction G3.1001344
2. Safety G3.1012200
3. Specifications G4.1024783
3.1 Engine G4.1025500
3.2 Fuel system G4.1025602
3.3 Ignition system G4.1025638
3.4 Chain lubrication G4.1025674
3.5 Tightening torques G5.1031651
4. Troubleshooting G6.1018399
4.1 Clutch G6.1018401
4.2 Chain drive, chain brake, chain tensioner G7.1010130
4.3 Chain lubrication G8.1010130
4.4 Rewind starter G9.1005354
4.5 Ignition system G10.1005354
4.6 Carburetor G11.1007679
4.7 Engine G12.1020881
5. Saw chain / chain guide G13.1065686
6. Clutch G13.1113616
6.1 Clutch drum G13.1030348
7. Checking operation of chain brake G13.1030350
7.1 Brake band, removal and installation G13.1030385
7.2 Brake lever G13.1032781
7.3 QuickStop Super brake lever G13.1031131
7.3.1 Adjusting brake cable G13.1100689
7.3.2 Brake cable, removal and installation G13.1101042
7.4 Cam lever G13.1092359
7.5 Pins G13.1092512
7.6 Chain tensioner G13.1092675
7.7 Bar mounting studs G13.1033053
8. Engine G13.1033123
8.1 Muffler / spark arresting screen G13.1033127
8.2 Leakage testing G13.1033275
8.2.1 Preparations G13.1033476
8.2.2 Vacuum test G13.1033804
8.2.3 Pressure test G13.1033823
8.3 Oil seals G13.1033850
8.4 Shroud, removal and installation G13.1101534
8.5 Cylinder G13.1034234
8.6 Crankshaft G13.1034920
8.6.1 Removal G13.1095548
8.6.2 Installation G13.1034941
8.6.3 Ball bearing / crankcase G13.1075390
8.7 Piston G13.1075797
8.7.1 Removal G13.1075798
8.7.2 Installation G13.1075801
8.8 Piston rings G13.1034948
8.9 Decompression valve G13.1101950
9. Ignition system G13.1066930
9.1 Ignition module G13.1037633
9.1.1 Removal and installation G13.1076044
9.2 Ignition timing G13.1037653
9.3 Testing the ignition module G13.1037635
9.4 Spark plug boot / ignition lead G13.1037745
9.5 Flywheel G13.1037750
9.6 Short circuit wire G13.1039586
9.6.1 Testing G13.1076424
9.6.2 Removal and installation G13.1033825
9.6.3 Ground wire G13.1098216
9.7 Pre-separator G13.1114503
9.8 Troubleshooting chart, ignition system G14.1002743
10. Rewind starter G15.1015765
10.1 General G15.1015998
10.2 Removal and installation G15.1016353
10.3 Pawls G15.1016384
10.4 Rope rotor G15.1016431
10.5 Starter rope / grip G15.1016536
10.6 Tensioning the rewind spring G15.1016766
10.7 Rewind spring G15.1017033
10.8 Starter rope guide bushing G15.1017243
11. Anti-vibration system, repair G15.1017578
11.1 Annular buffers G15.1017338
11.2 Anti-vibration spring, front handle G15.1037152
11.3 Anti-vibration spring, fuel tank G15.1017745
11.3.1 Anti-vibration spring, oil tank G15.1050294
11.4 Stop buffers G15.1017876
11.5 Front handle G15.1050748
11.5.1 Front handle with handle heating G15.1051033
12. Actuating levers G15.1050841
12.1 Switch shaft G15.1053657
12.1.1 Removal and installation G15.1051330
12.2 Throttle trigger / throttle trigger interlock G15.1051516
12.3 Throttle trigger / throttle trigger interlock / QuickStop Super G15.1017879
12.3.1 Switch lever G15.1052254
12.3.2 Throttle trigger interlock G15.1017978
13. Chain lubrication G15.1040069
13.1 Pick-up body G15.1040073
13.2 Oil suction hose G15.1041057
13.3 Oil pump G15.1040173
13.3.1 Repair G15.1040408
13.3.2 Adjustment G15.1053085
13.4 Valve G15.1040409
13.5 Oil tank cap G15.1040458
14. Fuel system G15.1018242
14.1 Air filter G15.1037866
14.1.1 Baffle G15.1053396
14.1.2 Filter base G15.1018245
14.2 Spacer flange G15.1053971
14.3 Carburetor removal and installation G15.1038021
14.3.1 Leakage testing G15.1018458
14.4 Carburetor repair G15.1018584
14.4.1 Air flap G15.1054479
14.4.2 Metering diaphragm G15.1018765
14.4.3 Inlet needle G15.1018854
14.4.4 Fixed jet G15.1018972
14.4.5 Pump diaphragm G15.1019043
14.4.6 Choke shaft / choke shutter G15.1019100
14.4.7 Throttle shaft / throttle shutter G15.1019287
14.4.8 Accelerator pump G15.1045156
14.4.9 Adjusting screws G15.1020322
14.5 Carburetor adjustment G15.1020437
14.5.1 Basic setting G15.1020438
14.5.2 Standard setting G15.1048321
14.6 Throttle cable G15.1058074
14.6.1 Carburetor support G15.1020968
14.6.2 Carburetor housing G15.1057204
14.6.3 Intake elbow, removal and installation G15.1048375
14.6.4 Impulse hose G15.1021178
14.7 Tank vent G15.1021285
14.7.1 Check G15.1021306
14.7.2 Removal and installation G15.1021342
14.8 Fuel intake G15.1021448
14.8.1 Pick-up body G15.1021449
14.8.2 Fuel hoses G15.1039576
14.8.3 Fuel filler cap G15.1021788
14.8.4 Tank housing, removal and installation G15.1021790
15. Heating G15.1057710
15.1 Carburetor heating G15.1057752
15.2 Troubleshooting chart, carburetor heating element G16.1002743
15.3 Handle heating systems G17.1021424
15.3.1 Troubleshooting G17.1021426
15.4 Heating switch, removal and installation G17.1038253
15.5 Heating element in handle, removal and installation G17.1025114
15.6 Heating element in front handle, removal and installation G17.1038665
15.7 Generator, removal and installation G17.1038680
15.7.1 Troubleshooting chart, handle heating systems and generator G18.1002743
15.7.2 Summary of test connections and test values G19.1006244
15.8 Wiring harness G20.1023765
15.8.1 Removal G20.1041232
15.8.2 Installation G20.1035420
16. Special tools G21.1002743
17. Servicing accessories G22.1005354

MS441 – 1138 147

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