STIHL 032 AV Parts Manual

The STIHL 032 AV is a professional-grade chainsaw featuring a durable AV anti-vibration system, powerful engine, and reliable construction for demanding cutting tasks. This parts manual provides detailed diagrams, part numbers, and ordering information for maintenance and repair. Below are key sections covering identification, engine components, fuel system, ignition, carburetor, clutch, chain brake, guide bar, chain, and troubleshooting.

Identification and Specifications

Key identification: Model 032 AV, serial number location on crankcase. Engine type: Single-cylinder, two-stroke, air-cooled.

Specification	Description
Displacement	49.0 cc (2.99 cu in)
Power Output	3.0 hp (2.2 kW)
Fuel Tank Capacity	0.55 L (18.6 fl oz)
Oil Tank Capacity	0.26 L (8.8 fl oz)
Guide Bar Length Options	40 cm (16"), 45 cm (18")
Chain Pitch	3/8" PM
Weight (without bar/chain)	6.2 kg (13.7 lbs)
Ignition System	Electronic, breakerless
AV System	Rubber dampeners in handle and engine mounts
Carburetor	STIHL diaphragm carburetor

Engine Assembly Components

Crankcase assembly includes: Cylinder, piston, crankshaft, connecting rod, bearings, seals.

1. Crankcase halves: Part numbers for left and right halves with integrated AV mounts.
2. Crankshaft assembly: Includes main bearings, seals, and counterweights.
3. Connecting rod: Needle bearing connection to piston pin.
4. Engine covers: Clutch cover, starter cover, muffler cover.

WARNING! Engine disassembly requires special tools. Always disconnect spark plug before servicing.

Cylinder and Piston Group

Cylinder: Cast aluminum with chrome-plated bore. Piston: Aluminum alloy with two piston rings.

1. Cylinder part number: Includes transfer ports and exhaust port.
2. Piston assembly: Piston, piston pin, circlips, piston rings.
3. Cylinder head: With cooling fins and spark plug thread.
4. Gaskets: Cylinder base gasket, cylinder head gasket.

CAUTION! Measure cylinder wear and piston clearance during reassembly.

Fuel System Parts

• Fuel Tank: Polyethylene tank with integrated filter.
• Fuel Line: Oil-resistant hose from tank to carburetor.
• Fuel Filter: In-tank filter element.
• Fuel Cap: Ventilated cap with gasket.
• Primer Bulb: For easy starting (if equipped).
• Impulse Line: Connects crankcase to fuel pump.

Ignition System Components

Electronic ignition module, spark plug, stop switch, wiring harness.

Ignition Module: Mounted on fan housing, generates spark. Spark Plug: Bosch WSR6F or equivalent, gap 0.5 mm (0.020"). Stop Switch: Grounds ignition to stop engine. Flywheel: Magnets trigger ignition timing.

Testing: Check spark with tester. Replace module if no spark. Ensure air gap between flywheel and module is 0.3 mm (0.012").

Carburetor and Air Filter

STIHL carburetor with H, L, and LA adjustment screws. Air filter: Felt or foam element.

1. Carburetor assembly: Includes diaphragm, gaskets, needle valve.
2. Adjustment screws: H (high speed), L (low speed), LA (idle).
3. Air filter housing: With pre-cleaner if equipped.
4. Throttle linkage: Connects throttle trigger to carburetor.

Tip: Clean air filter regularly. Use STIHL carburetor repair kit for rebuilding.

Clutch and Sprocket Assembly

Centrifugal clutch with drum sprocket. Engages at approximately 2,800 rpm.

1. Clutch drum: With integrated rim sprocket or spur sprocket.
2. Clutch shoes: Three shoes with springs.
3. Clutch bell: Outer cover for clutch assembly.
4. Bearing: Needle bearing in clutch drum.
5. Sprocket type: Replaceable rim sprocket (3/8" PM).

WARNING! Always wear gloves when handling clutch components. Replace worn sprocket to prevent chain damage.

Chain Brake and Safety Features

Front hand guard activates chain brake when engaged. Inertia-activated brake system.

Component	Part Number
Brake band	1128 640 2001
Brake flag	1110 791 4800
Hand guard	1118 791 0600
Springs	Various for tension and return
Lock lever	For brake engagement

Guide Bar and Chain Parts

STIHL Rollomatic guide bar. Saw chain: 3/8" PM with specific drive link count.

Guide Bar: 40 cm (16") or 45 cm (18") length. Chain: 3/8" PM, 0.063" gauge. Drive Sprocket: Rim type, part number 1128 640 2003. Bar Nuts: M8 for bar mounting. Chain Tensioner: Screw adjustment with pin.

CAUTION! Always match chain pitch and gauge to bar. Keep chain sharp and properly tensioned.

AV Anti-Vibration System

Rubber dampeners isolate handle from engine. Mounts at front and rear handle points.

1. Front AV mounts: Two rubber elements between engine and handle.
2. Rear AV mount: Single rubber element at rear handle attachment.
3. Buffer elements: Additional dampeners in handle structure.
4. Mounting bolts: Special bolts with integrated vibration isolation.

Inspection: Check rubber for cracks or deterioration. Replace if hardened or damaged.

Troubleshooting and Part Replacement

Problem	Possible Cause	Part Needed
Engine won't start	No spark, fuel issue	Ignition module, fuel filter, carburetor kit
Loss of power	Clogged muffler, air filter	Muffler spark arrestor, air filter
Excessive vibration	Worn AV mounts	AV rubber dampeners set
Chain won't stop	Brake band worn	Chain brake band assembly
Oil leakage	Crankcase seals	Seal kit, gaskets

Ordering: Use STIHL part numbers from diagrams. Contact authorized STIHL dealer.

Service: Genuine STIHL parts only. Refer to workshop manual for detailed procedures.