STIHL MS180C Parts Manual

The STIHL MS180C is a lightweight, easy-to-handle chainsaw designed for homeowners and occasional users. This parts manual provides detailed diagrams, part numbers, and descriptions for all components of the MS180C chainsaw, including the engine, cutting attachment, fuel system, ignition, and housing. It is intended for maintenance, repair, and ordering of genuine STIHL replacement parts to ensure optimal performance and safety.

Introduction & Safety

This manual is for reference when servicing the STIHL MS180C chainsaw. Always prioritize safety.

WARNING! Always use genuine STIHL parts. Non-genuine parts may cause malfunction, unsafe operation, and void warranty. Disconnect spark plug before servicing.

General Specifications

• Engine Type: STIHL single-cylinder, two-stroke engine.
• Displacement: 31.8 cc.
• Power Output: 1.8 kW (2.4 bhp).
• Fuel Tank Capacity: 250 ml.
• Oil Tank Capacity: 145 ml (Chain oil).
• Guide Bar Lengths: Typically 14" or 16" (35 cm or 40 cm).
• Chain Pitch: 3/8" PMM3 (Picco Micro Mini).
• Weight (powerhead): Approximately 3.9 kg (8.6 lbs).
• Ignition System: Electronic, capacitor discharge (CDI).

Engine Assembly Parts

Cylinder, piston, crankshaft, connecting rod, bearings, seals, and associated components.

1. Cylinder: Part # 1128 020 2005 - Includes cylinder fins and transfer ports.
2. Piston: Part # 1128 030 2001 - 38mm diameter with rings.
3. Crankshaft: Part # 1128 040 2003 - Complete assembly with bearings.
4. Crankcase: Part # 1128 050 2001 - Upper and lower halves.
5. Main Bearings & Seals: Various part numbers for specific positions.

Note: Engine parts must be installed with proper torque specifications. Refer to service manual for assembly procedures.

Fuel System Parts

Fuel tank, cap, filter, lines, carburetor, and air filter assembly.

Ignition System Parts

Spark plug, ignition module (coil), stop switch, and wiring.

• Spark Plug: Bosch WSR 6 F or equivalent. STIHL Part # 0000 400 1305.
• Ignition Module (CDI): Part # 1128 400 1401. Includes coil and electronic advance.
• Stop Switch: Part # 1128 962 0500. Mounts on handle.
• Wiring Harness: Part # 1128 965 2001. Connects switch to module and ground.
• Spark Plug Boot: Part # 0000 350 0900.

CAUTION! Check spark with proper tester. Never check by holding plug against cylinder.

Cutting Attachment Parts

Guide bar, saw chain, sprocket, clutch, and bar nuts.

1. Guide Bar (14"): Part # 3003 000 3914. Rollomatic E (.043" gauge).
2. Saw Chain (14"): Part # 3613 000 0053. 55 drive links, 3/8" PMM3, .043" gauge.
3. Drive Sprocket (Rim): Part # 1128 642 2003. 7-tooth, fits 3/8" PMM3.
4. Clutch Drum/Sprocket Assembly: Part # 1128 640 2001.
5. Clutch: Part # 1128 160 2001. Centrifugal type.
6. Bar Nuts: Part # 1128 664 2000. M8 x 1.25.
7. Chain Tensioner: Part # 1128 664 0500. Includes screw and adjuster.

Housing & Handle Parts

Plastic housing (crankcase cover), rear handle, front handle, anti-vibration elements, and covers.

Main Housing/Crankcase Cover: Part # 1128 791 2001. Includes air intake and mounting points.

Rear Handle: Part # 1128 790 2001. Contains trigger, throttle lock, and stop switch.

Front Handle: Part # 1128 792 2001. With anti-vibration mountings.

Anti-Vibration Elements: Part # 1128 793 2000 (set). Rubber dampeners.

Side Cover (Clutch Cover): Part # 1128 650 2001.

Chain Brake Assembly (if equipped): Part # 1128 650 2002 (includes band and lever).

Starter Assembly Parts

Starter housing, rope, pulley, spring, and handle.

WARNING! The rewind spring is under tension. Wear safety glasses when servicing the starter.

Maintenance & Care

Regular maintenance ensures longevity and safe operation.

1. Daily/Before Use: Check chain tension, sharpness, and lubrication. Inspect for loose parts.
2. Cleaning: Use a brush to remove sawdust from cooling fins, air filter, and clutch area.
3. Air Filter: Clean regularly with soapy water, dry completely. Replace if damaged.
4. Fuel Filter: Replace annually or if clogged.
5. Spark Plug: Clean and regap (0.5mm / 0.020") every 50 hours. Replace annually.
6. Chain & Bar: File chain regularly. Clean bar groove and oil holes. Flip bar periodically.
7. Storage: Run carburetor dry or use fuel stabilizer. Store in a dry place.

Parts Ordering Information

Always order parts using the correct STIHL part number.

• Source: Authorized STIHL Dealers only.
• Provide: Model (MS180C) and Serial Number (located on crankcase).
• Use Diagrams: Reference the official STIHL IPL (Illustrated Parts List) for MS180C.
• Genuine Parts: Ensure packaging bears the STIHL logo.
• Warranty Note: Use of non-STIHL parts may void the equipment warranty.

For IPL access: Contact your dealer or visit the STIHL dealer portal.

Troubleshooting & Warranty

Warranty: STIHL Limited Warranty. Period varies by region. Proof of purchase from authorized dealer required. Damage from misuse, neglect, or non-genuine parts not covered.

Service Support: Contact an authorized STIHL servicing dealer. For dealer locator: www.stihlusa.com or 1-800-467-8445.