Stihl 011AV Parts Manual

The Stihl 011AV is a professional-grade gasoline-powered chainsaw designed for demanding cutting tasks. This parts manual provides detailed information on the components, assembly, maintenance, and replacement parts for the Stihl 011AV model. Below are key sections covering identification, engine components, fuel system, ignition system, cutting equipment, maintenance procedures, and ordering parts.

Identification and Specifications

Key identifiers: Model number 011AV, engine displacement, power output, and manufacturing codes.

Feature	Description
Model	Stihl 011AV
Engine Type	Single cylinder, 2-stroke, air-cooled
Displacement	34.9 cc (2.13 cu. in.)
Power Output	Approx. 1.8 kW (2.4 hp)
Fuel/Oil Mix Ratio	50:1 (Stihl HP Ultra or equivalent)
Guide Bar Lengths	12" to 16" (30 cm to 40 cm)
Chain Pitch	3/8" PMM or .325"
Weight (powerhead)	Approx. 4.6 kg (10.1 lbs)
Ignition System	Electronic, capacitor discharge
Manufacturer	Andreas Stihl AG & Co. KG

Engine Assembly and Components

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

1. Cylinder: Aluminum with chrome-plated bore, part number 1110 020 2001.
2. Piston: Single ring, part number 1110 030 2001.
3. Crankshaft: Includes main bearings and seals, part number 1110 040 2001.
4. Crankcase: Two-piece design, includes gasket and screws.
5. Muffler: Spark arrestor screen included, part number 1110 050 2001.

WARNING! Engine components are under high stress; use genuine Stihl parts for replacement. Ensure proper torque specifications during assembly.

Fuel System Parts

Fuel tank, cap, lines, filter, carburetor, and primer bulb.

1. Fuel Tank: Polyethylene, includes vent, part number 1110 060 2001.
2. Carburetor: Walbro or Zama, includes adjustment screws, part number 1110 070 2001.
3. Fuel Filter: In-tank, replace annually, part number 0000 350 3501.
4. Fuel Lines: Supply and return lines, part numbers 1110 080 2001/2002.
5. Primer Bulb: For easy starting, part number 1110 090 2001.

CAUTION! Use clean, fresh fuel mix. Inspect fuel lines regularly for cracks or leaks.

Ignition System Parts

• Ignition Module: Electronic, includes spark advance, part number 1110 100 2001.
• Spark Plug: Bosch WSR6F or equivalent, gap 0.5 mm (0.020").
• Stop Switch: Integrated into ignition module.
• Flywheel: Magneto, includes keyway, part number 1110 110 2001.
• Wiring Harness: Connects ignition to stop switch and ground.
• Testing: Check for spark with tester; minimum gap 5 mm.

Cutting Equipment and Bar/Chain

Guide bar, saw chain, drive sprocket, chain tensioner, and bar nuts.

Guide Bar: Stihl Rollomatic E or ES, lengths 12"-16". Part numbers vary by length and type.

Saw Chain: Stihl Oilomatic, pitch 3/8" PMM or .325", gauge .050" or .058". Part numbers by chain type (e.g., 63PM3-XX).

Drive Sprocket: Rim or spur type, part number 1110 120 2001.

Chain Tensioner: Screw adjustment, includes pin and worm gear, part number 1110 130 2001.

Air Filter and Cooling System

Air filter, cover, cooling fins, and fan wheel.

1. Turn off engine and allow to cool before servicing air filter.
2. Remove filter cover; clean foam filter with soapy water or replace.
3. Inspect cooling fins on cylinder for debris; clean with brush.
4. Fan wheel on flywheel must be intact for proper cooling.

Tip: Service air filter every 10 operating hours or more frequently in dusty conditions.

Starter Assembly

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

1. Starter Housing: Plastic, includes screws, part number 1110 140 2001.
2. Starter Rope: 3.5 mm diameter, replace if frayed, part number 1110 150 2001.
3. Starter Spring: Rewind, part number 1110 160 2001.
4. Pulley and Pawls: Engage with flywheel, part number 1110 170 2001.
5. Handle: Ergonomic grip, part number 1110 180 2001.

WARNING! Use caution when handling starter spring; it is under tension. Wear safety gloves.

Clutch and Sprocket

Centrifugal clutch, drum, bearing, and retaining clip.

Clutch: Engages at approximately 2,800 rpm, part number 1110 190 2001.

Clutch Drum: Houses sprocket, part number 1110 200 2001.

Bearing: Needle bearing in drum, part number 1110 210 2001.

Retaining Clip: Secures drum, part number 1110 220 2001.

Maintenance and Service Intervals

Daily: Check chain tension, sharpness, and lubrication. Clean air filter.

Weekly: Inspect fuel lines, spark plug, cooling fins, and bar/chain wear.

Monthly: Clean spark arrestor screen, check clutch and sprocket, replace fuel filter.

Annually: Replace spark plug, inspect piston/cylinder through exhaust port, check all fasteners.

Exploded Views and Part Numbers

Refer to official Stihl 011AV IPL (Illustrated Parts List) for exploded diagrams. Key part number prefixes: 1110 series for engine, 1128 for handle/frame, 1140 for cutting attachment.

Example Part Numbers:

• Complete Cylinder Kit: 1110 020 2005
• Carburetor Repair Kit: 1110 070 2005
• Chain Brake Handle: 1128 790 2001
• Oil Pump: 1110 230 2001

Ordering: Use serial number and model when ordering parts. Contact authorized Stihl dealer.

Troubleshooting and Common Issues

Symptom	Possible Cause	Corrective Action
Engine will not start	Fuel, spark, compression	Check fuel mix, spark plug, carburetor settings, and piston condition.
Engine runs poorly	Clogged filter, carb adjustment	Clean/replace air filter; adjust carburetor H/L screws per manual.
Chain does not turn	Clutch, sprocket, brake engaged	Inspect clutch shoes/springs; check sprocket wear; disengage chain brake.
Excessive vibration	Loose parts, unbalanced chain	Tighten all fasteners; check chain for damaged/dull cutters.
Oil not delivering to bar	Oil pump, lines, tank vent	Check oil pump function, lines for leaks, and tank vent for blockage.

Service: For technical support or parts, contact an authorized Stihl servicing dealer or visit www.stihlusa.com.