The Husqvarna 44 Chainsaw is a professional-grade chainsaw designed for demanding cutting tasks. This parts manual provides detailed diagrams, part numbers, and ordering information for all components of the Husqvarna 44 model, including the engine assembly, cutting equipment, fuel system, ignition system, and chassis. Below are key sections for identification, major assemblies, replacement parts, ordering, and maintenance.
Identify your Husqvarna 44 using the serial number plate located on the rear of the crankcase. Key specifications for parts ordering.
| Feature | Specification |
|---|---|
| Model Designation | Husqvarna 44 |
| Engine Type | 2-stroke, single cylinder |
| Displacement | 44.3 cc (2.7 cu. in.) |
| Power Output | 2.2 kW (3.0 hp) |
| Fuel Tank Capacity | 0.47 L (0.99 US pt) |
| Oil Tank Capacity | 0.26 L (0.55 US pt) |
| Recommended Bar Lengths | 13" to 16" (33 cm to 40 cm) |
| Chain Pitch | 3/8" Low Profile or .325" |
| Spark Plug | NGK BPMR7A (or equivalent) |
| Ignition System | Electronic, SEM type |
Always refer to the operator's manual for safe operation. Use only genuine Husqvarna parts for repair.
WARNING! Failure to use correct parts or follow safety procedures can result in serious injury or damage to the saw.
Cylinder, piston, crankshaft, bearings, seals, and crankcase components.
CAUTION! Engine assembly requires precise alignment and torque specifications. Consult a service manual for detailed procedures.
Fuel tank, carburetor, filters, lines, and pump components.
Carburetor: Zama C1Q series or Walbro HDA series. Includes diaphragm kit, gaskets, needle valve, and adjustment screws.
Fuel Tank: Plastic tank assembly, cap, and vent. Fuel Filter: In-tank filter and line. Impulse Line: Connects crankcase to fuel pump. Air Filter: Dual-stage foam/felt element and cover.
Spark plug, ignition coil (SEM module), flywheel, stop switch, and wiring harness.
Tip: Test ignition coil with a proper spark tester. Ensure air gap between coil leg and flywheel magnets is 0.3 mm (0.012").
Supporting structure, anti-vibration system, and protective components.
WARNING! Inspect handles and AV mounts regularly for cracks. Replace damaged parts immediately.
Screws, nuts, washers, plugs, and small parts. Most are metric.
Common Fasteners: M5 x 25mm flange screws (covers), M6 x 45mm (cylinder), M8 nuts (bar). Gaskets & Seals: Cylinder base gasket, muffler gasket, crank seals. Plugs & Caps: Decompression valve (if equipped), spark plug boot, tank vent.
Refer to the official Husqvarna parts diagrams for visual reference. Diagrams are grouped by assembly (e.g., 501 Engine, 502 Fuel System). Each numbered item corresponds to a part number listed in the table below the diagram.
How to Read: Locate the assembly diagram number. Match the item number (e.g., 501 12 01-01) to the part list to get the Husqvarna part number (e.g., 537 01 12-01).
Always provide your model number (44) and serial number when ordering. Use genuine Husqvarna parts to maintain performance and warranty.
| Information Needed | Where to Find | Example |
|---|---|---|
| Model Number | Serial plate, crankcase | 44 |
| Serial Number | Serial plate | 1234567 |
| Part Description/Diagram # | This manual | Clutch Assembly (504 12 01) |
| Husqvarna Part Number | From parts list | 501 87 42-01 |
Warranty: Genuine parts may carry a limited warranty. Installation by an authorized service dealer is recommended.
| Component | Check/Replace Interval | Part Reference |
|---|---|---|
| Air Filter | Clean every 10 hrs; Replace as needed | Section 6 |
| Spark Plug | Check gap every 25 hrs; Replace yearly | Section 2, 7 |
| Fuel Filter | Replace every 100 hrs or yearly | Section 6 |
| Chain & Bar | Sharpen as needed; Inspect for wear daily | Section 5 |
| Sprocket (Rim) | Replace every 2-3 chains | Section 5 |
| Carburetor Diaphragm Kit | Replace if hard starting or poor performance | Section 6 |
| AV Buffers & Mounts | Inspect for cracks every 50 hrs | Section 8 |
Reset: N/A for parts manual.
Service & Parts: Contact an authorized Husqvarna dealer or visit www.husqvarna.com.