The Husqvarna 55 Rancher is a professional-grade chainsaw designed for demanding forestry and ranch work. This parts manual provides detailed diagrams, part numbers, and ordering information for the complete assembly, including the engine, cutting equipment, fuel system, ignition, and safety features. Below are key sections for identification, major assemblies, ordering, maintenance, and troubleshooting.
Key identifiers: Model 55 Rancher, serial number location on crankcase, engine displacement, and power output.
| Feature | Specification |
|---|---|
| Model Designation | 55 Rancher |
| Engine Type | 2-stroke, single cylinder |
| Displacement | 55 cc (3.4 cu in) |
| Power Output | 3.2 kW (4.3 hp) |
| Fuel Tank Capacity | 0.5 L (16.9 fl oz) |
| Oil Tank Capacity | 0.25 L (8.5 fl oz) |
| Recommended Bar Length | 13" to 20" (33 cm to 50 cm) |
| Weight (Powerhead) | 5.2 kg (11.5 lbs) |
| Ignition System | Electronic (SEM) |
| Chain Pitch/Gauge | .325" / .058" (or .063") |
Cylinder, piston, crankshaft, connecting rod, bearings, and seals.
WARNING! Always use genuine Husqvarna parts for engine assembly to ensure performance and safety. Torque fasteners to specification.
Guide bar, saw chain, sprocket, clutch, and bar mounting hardware.
CAUTION! Always match chain, bar, and sprocket specifications. Worn sprockets accelerate chain and bar wear.
Crankcase halves, oil pump, drive sprocket, and bearings.
Crankcase: Magnesiuim alloy halves, crankcase bolts. Oil Pump: Manual or automatic pump, drive gear, feed line. Bearings: Main bearings (6202 C3, 6203 C3), needle bearing for clutch side. Drive Shaft: Output shaft for clutch/sprocket assembly.
Recoil starter housing, rope, pulley, spring, and handle.
Tip: Wind the rewind spring carefully to avoid injury from sudden release.
Supports chain brake, throttle trigger, lockout, handles, and antivibration.
WARNING! Never operate a chainsaw with a faulty chain brake or throttle lockout. Replace damaged safety components immediately.
Daily: Clean air filter, check chain tension and sharpness. Weekly: Clean cooling fins, check spark plug. 50 Hours: Replace fuel filter, inspect clutch and sprocket. Annually: Replace crankcase seals if needed, inspect fuel lines.
Use the part number listed next to each item in the diagrams. Contact an authorized Husqvarna dealer or use the online parts lookup with your model and serial number.
CAUTION! Using non-genuine parts may void warranty and compromise safety.
Refer to the numbered diagrams in the full PDF manual for visual part identification and assembly order for: 1) Complete Powerhead, 2) Cylinder & Piston, 3) Crankcase, 4) Clutch & Sprocket, 5) Starter, 6) Fuel Tank & Handle, 7) Chain Brake Assembly.
| Symptom | Possible Cause | Corrective Action / Part to Check |
|---|---|---|
| Hard starting or no start | Fuel system, ignition | Check fuel filter (part # 501 87 41-01), spark plug, carburetor diaphragm kit. |
| Loss of power | Air filter, muffler, piston | Clean/replace air filter; clean spark arrestor; inspect piston/cylinder for scoring. |
| Chain does not turn | Clutch, sprocket, drive shaft | Inspect clutch springs (part # 501 55 41-02), sprocket, and needle bearing. |
| Excessive vibration | AV mounts, balance | Replace anti-vibration mounts (part # 501 87 65-01); check for bent crankshaft. |
| Oil not feeding to bar | Oil pump, lines, tank | Check oil pump gear (part # 501 62 41-01), feed line, and tank vent. |
Service: For technical assistance or to locate a dealer, visit www.husqvarna.com or contact Husqvarna Forest & Garden at 1-800-487-5962.