Stihl MS 291 Parts List Manual

Stihl MS 291 Parts List Diagrams Manual

Stihl MS 291 Parts List for the Stihl chainsaw. Find Stihl MS291 parts and part numbers with this PDF manual. The parts list (IPL) manual has diagrams in exploded view and accurate information in a parts breakdown schematic for the MS 291 chainsaw. View free page images or download a full PDF that you can print or view on all suitable devices.

Stihl MS 291 Parts List diagrams and schematics help you find spare parts.

Stihl MS 291 Parts List Specifications

Replace carburetor with Zama carb: Zama C1Q-S252, C1M-S246 and C1Q-S252

STIHL single-cylinder two-stroke engine

MS291 Engine

Displacement: 3.39 cu. in. (55.5 cm3)
Cylinder Bore: 1.85 in. (47.0 mm))
Piston Stroke: 1.26 in. (32 mm)
Engine power to ISO 7293: 3.8 hp (2.8 kW) at 9,500 rpm
Idle speed: 2,800 rpm
The maximum permissible speed with cutting attachment: 13,000 rpm

MS291 Ignition System

Electronic magneto ignition
Spark plug (suppressed): Bosch WSR 6 F, NGK BPMR 7 A
Electrode gap: 0.02 in. (0.5 mm)

MS291 Fuel system

All position diaphragm carburetor with an integral fuel pump
Fuel tank capacity: 16.9 fl.oz (0.50 l)

MS291 Chain lubrication

Fully automatic, speed-controlled oil pump with rotary piston
Oil tank capacity: 8.1 fl.oz (0.24 l)

MS291 Weight

dry, without bar and chain: 12.3 lbs. (5.6 kg)

MS291 Cutting attachments

Rollomatic E guide bars

Reduced kickback STIHL guide bars (with green label)
Bar lengths: 40, 45, 50 cm (16, 18, 20 in.)
Pitch: .325″ (8.25 mm)
Groove width: 1.6 mm (0.063 in.)
Sprocket nose: 11-tooth

Saw chain .325″

Low kickback STIHL saw chain (with green label)
Rapid Micro 3 (26 RM3) Type 3634
Pitch: .325″ (8.25 mm)
Drive link gauge: 1.6 mm (0.063 in)

Chain sprocket

7-tooth for .325″ (spur sprocket)

Replace spark plug with Bosch WSR 6 F or NGK BPMR 7 A

Stihl MS 291 Parts List PDF

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