The STIHL 028 AV Super is a professional-grade chainsaw known for its durability and performance. This parts manual provides comprehensive information for identifying, ordering, and replacing components. It includes exploded diagrams, part numbers, descriptions, and assembly instructions to assist with maintenance and repair. Below are key sections covering identification, major assemblies, engine components, cutting attachments, and ordering information.
Key identifiers: Model number (028 AV Super), serial number location (on crankcase), engine displacement, power output.
| Feature | Description |
|---|---|
| Model | STIHL 028 AV Super |
| Engine Type | Single cylinder, two-stroke, air-cooled |
| Displacement | 51.5 cc (3.14 cu. in.) |
| Power Output | 3.2 kW (4.3 hp) |
| Fuel/Oil Mix | 50:1 (STIHL HP Ultra or equivalent) |
| Guide Bar Lengths | 16" to 20" (40 cm to 50 cm) |
| Chain Pitch | 3/8" or .325" |
| Ignition System | Electronic, breakerless |
| Weight (powerhead) | Approx. 6.2 kg (13.7 lbs) |
| AV System | Anti-Vibration handles |
Overview of main saw sections and their part groups.
WARNING! Disconnect spark plug before disassembly. Use proper tools.
Detailed list of internal engine parts with part numbers.
CAUTION! Ensure clean work area; label parts during disassembly.
Components for guide bar, chain, and tensioning.
Guide Bar: Rollomatic E (part numbers vary by length): 16" (3003 000 3916), 18" (3003 000 3918), 20" (3003 000 3920).
Chain: 3/8" Pitch, .063" gauge, 72 drive links (for 16" bar) - 1122 007 1072. .325" Pitch options available.
Sprocket: Rim sprocket 3/8" - 1122 007 1007. Sprocket drum - 1122 007 1040.
Bar Mount: Studs 1122 007 1051, nuts 1122 007 1052.
Chain Tensioner: Screw 1122 007 1055, adjuster 1122 007 1056.
Clutch Cover: 1122 350 0901 with chain brake (if equipped).
Parts transmitting power from engine to chain.
Tip: Inspect clutch shoes for wear; replace if worn smooth.
Components reducing vibration to operator.
WARNING! Replace worn AV buffers to maintain vibration damping.
External covers and housing parts.
| Part | Part Number | Description |
|---|---|---|
| Top Cover | 1122 350 0700 | Air filter cover with decomp valve hole |
| Chain Brake Cover | 1122 350 0901 | Right side cover with hand guard |
| Flywheel Cover | 1122 350 0801 | Left side cover (starter side) |
| Muffler Cover | 1122 350 0600 | Heat shield over muffler |
| Air Filter Cover | 1122 350 0701 | Snap-on filter cover |
| Air Filter | 1122 140 0600 | Felt/fleece element |
Common screws, nuts, washers used throughout.
Always provide model number (028 AV Super) and serial number when ordering. Use genuine STIHL parts for optimal performance and safety. Exploded diagrams in this manual correspond to STIHL microfiche system.
CAUTION! Using non-genuine parts may void warranty and compromise safety.
Reference exploded views for major systems (not shown in HTML). Diagram sections include:
| Diagram | Components Covered | Reference Number |
|---|---|---|
| Crankcase Assembly | Crankcase, bearings, seals, crankshaft | Fig. 1 |
| Cylinder Group | Cylinder, piston, rings, wrist pin | Fig. 2 |
| Fuel System | Tank, carburetor, lines, filter | Fig. 3 |
| Ignition System | Module, coil, wiring, stop switch | Fig. 4 |
| Clutch & Drive | Clutch, drum, sprocket, oil pump | Fig. 5 |
| AV Handle System | Handles, buffers, springs, bolts | Fig. 6 |
| Cutting Attachment | Bar, chain, tensioner, cover | Fig. 7 |
Note: Diagrams are proprietary; consult printed manual or dealer system.
Support: Contact STIHL authorized service center or visit www.stihlusa.com for diagrams and technical bulletins.