The Husqvarna 372XP is a professional-grade chainsaw renowned for its power, durability, and performance in demanding forestry and logging applications. This parts manual provides a comprehensive breakdown of all components, assemblies, and part numbers for the 372XP model. It is designed to assist with maintenance, repair, and ordering of genuine Husqvarna replacement parts to ensure optimal performance and safety. Below are key sections covering identification, major assemblies, individual parts, ordering information, and maintenance guidelines.
Key identifiers: Model 372XP, Serial Number location (on crankcase), Engine type, Displacement, and Power output.
| Feature | Description |
|---|---|
| Model | 372XP |
| Engine Type | 2-stroke, single cylinder |
| Displacement | 71.5 cm³ (4.36 cu. in.) |
| Power Output | 5.2 hp (3.8 kW) |
| Fuel Tank Capacity | 0.77 L (0.20 US gal) |
| Oil Tank Capacity | 0.38 L (0.10 US gal) |
| Recommended Bar Length | 15" to 24" (38 cm to 61 cm) |
| Weight (Powerhead) | 6.3 kg (13.9 lbs) |
| Ignition System | Electronic (SEM) |
| Carburetor | Walbro HDA |
Complete breakdown of the engine assembly and its core components.
WARNING! Always disconnect the spark plug wire before performing any engine maintenance to prevent accidental starting.
Components related to fuel delivery, air filtration, and ignition.
CAUTION! Use only clean, fresh fuel mixed with high-quality 2-stroke oil at a 50:1 ratio. Never use fuel older than 30 days.
Internal engine components responsible for converting piston motion to rotational force.
Crankshaft: Part # 501 87 76-01. Includes main bearings and seals.
Connecting Rod: Part # 501 87 77-01.
Crankcase Halves: Part # 501 87 78-01 (Left), Part # 501 87 79-01 (Right).
Main Bearings: Part # 501 87 80-01 (Ball Bearing), Part # 501 87 81-01 (Needle Bearing).
Crankcase Seals: Part # 501 87 82-01 (Flywheel side), Part # 501 87 83-01 (Clutch side).
Picture: Exploded view diagram of crankcase assembly. Audio: N/A. Install: Requires specialized tools and press for bearing/seal installation.
Detailed parts for the top-end of the engine.
Tip: Use a ring compressor when installing the piston into the cylinder. Lubricate the piston and rings with 2-stroke oil.
Components for the pull-start mechanism.
WARNING! The recoil spring is under high tension. Wear safety glasses and gloves when servicing the starter assembly to prevent injury from spring release.
Parts transmitting engine power to the chain.
Centrifugal Clutch: Part # 501 87 90-01. Includes shoes, springs, and drum.
Clutch Drum: Part # 501 87 91-01.
Drive Sprocket (Rim Sprocket, 7-tooth): Part # 501 87 92-01.
Clutch Bearing: Part # 501 87 93-01.
Oil Pump Assembly: Part # 501 87 94-01. Automatic chain oiler.
Oil Pump Gear: Part # 501 87 95-01.
External parts for operation, vibration dampening, and safety.
CAUTION! Inspect anti-vibration mounts regularly. Worn mounts increase vibration to the operator and can lead to fatigue or loss of control.
Quick-reference table for common replacement parts.
| Description | Husqvarna Part Number |
|---|---|
| Air Filter | 503 21 46-01 |
| Spark Plug | 502 50 86-01 |
| Fuel Filter | 501 87 67-01 |
| Complete Piston Kit | 501 87 63-02 |
| Clutch Assembly | 501 87 90-01 |
| Starter Rope | 501 87 87-01 |
| Chain Brake Band | 501 88 01-01 |
| Guide Bar (20") | 501 87 69-01 |
| Chain (72DL) | 501 87 71-01 |
| AV Mount Set | 501 88 03-01 |
Ordering: Always provide the saw's serial number when ordering parts. Parts are subject to change; verify with an authorized Husqvarna dealer.
| Symptom / Task | Possible Cause | Corrective Action / Guideline |
|---|---|---|
| Engine will not start | Fuel, spark, compression | Check fuel freshness, spark plug condition, and compression (should be >120 psi). |
| Loss of power | Clogged air/fuel filter, muffler screen | Clean or replace air filter, fuel filter, and spark arrestor screen. |
| Chain does not oil | Clogged oil passages, faulty pump | Clean bar oil holes and inlet filter; check oil pump function and gear. |
| Excessive vibration | Worn AV mounts, unbalanced clutch | Inspect and replace all four anti-vibration mounts. Check clutch for damage. |
| Chain brake not engaging | Worn brake band, dirty mechanism | Clean around clutch drum; inspect and replace brake band if worn. |
Regular Maintenance: Daily: Clean air filter, check chain tension and sharpness. Weekly: Clean saw exterior, check all fasteners. Seasonal: Replace fuel filter, spark plug, clean cooling fins, inspect piston through exhaust port.
Service: For technical support and genuine parts, contact an authorized Husqvarna dealer or visit www.husqvarna.com.