Products Description
HUS61/HUS268/HUS272 Chainsaw Flywheel – Precision Ignition Rotor
OEM-Spec Replacement Flywheel for Husqvarna 61, 268 & 272 Professional Saws
This flywheel is a direct replacement for the ignition rotor on Husqvarna 61, 268, 268XP, 272, 272XP, and 268K chainsaws . As a critical engine component, the flywheel serves two essential functions: its outer magnetic poles generate electricity for the ignition coil to produce spark, and its rotating blades create airflow to cool the engine cylinder and crankcase . Replacing a damaged flywheel resolves issues such as incorrect ignition timing, hard starting, misfires at high RPM, and power loss . Manufactured from durable aluminum alloy, this flywheel ensures long-lasting performance and stability .
Technical Profiles & Materials
Aluminum Alloy Construction – Precision-cast from durable aluminum alloy material that withstands the high-temperature, high-vibration environment of professional chainsaw operation .
OEM-Spec Replacement Fitment – Replaces OEM part number 503 51 15-03 . Fits Husqvarna models 61, 268, 268XP, 272, 272XP, and 268K .
Ignition System Integration – The flywheel's outer magnetic poles work with the ignition coil to generate electricity for precise spark timing, enabling reliable ignition under all operating conditions .
Engine Cooling Function – Rotating blades on the flywheel draw air over the cylinder and crankcase, maintaining safe operating temperatures during demanding cutting tasks .
High Hardness Treatment – Premium aftermarket options feature high-temperature quenching heat treatment to strengthen overall hardness for enhanced durability and comfort of use .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | OEM Part No. | 503 51 15-03 / 503511503 |
| 2 | Compatible Models | HUS61, HUS268, HUS268XP, HUS272, HUS272XP, HUS268K |
| 3 | Cross-Compatible | Jonsered 2077, 2083, 625, 630, 670 Champ |
| 4 | Material | Aluminum Alloy |
| 5 | Outer Diameter | 114 mm |
| 6 | Overall Height | 32 mm |
| 7 | Weight | Approx. 355 – 400g |
| 8 | Key Width | 2.5 mm |
| 9 | Compatibility Note | Does NOT fit models using flywheel nos. 501 77 82-02 or 501 51 69-80 |
Products Application
Ignition System Restoration
When a Husqvarna 268 or 272 exhibits no spark, weak spark, or intermittent ignition, a worn or damaged flywheel is often the culprit. Replacement restores proper spark timing and ensures reliable starting and consistent power delivery under load .
Engine Overhaul & Restoration
During a complete engine rebuild of classic Husqvarna 61, 268, or 272 saws, replacing the flywheel ensures all ignition components are renewed. The 503 51 15-03 flywheel is a standard OEM-spec part for these popular professional models .
Misfire & High-RPM Performance Repair
When the saw misfires at high RPM or experiences power fluctuations, the flywheel keyway may be damaged or the magnetization weakened. The aluminum alloy replacement provides a stable, reliable solution for restoring full engine performance .
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm this flywheel fits my Husqvarna chainsaw?
A:Check your chainsaw model number on the housing. This flywheel fits Husqvarna 61, 268, 268XP, 272, 272XP, and 268K models. It replaces OEM part number 503 51 15-03 . Do not order if your saw uses flywheel numbers 501 77 82-02 or 501 51 69-80 .
Q: What are the symptoms of a damaged flywheel?
A: Common symptoms include incorrect ignition timing, hard starting, misfires at high RPM, power fluctuations, and insufficient engine cooling. The flywheel can become damaged due to rust, a damaged keyway, dynamic imbalance, or weakening magnetization over time .
Q: Is this flywheel compatible with Jonsered chainsaws?
A: Yes, this flywheel is also compatible with Jonsered models including 2077, 2083, 625, 630, and 670 Champ that share the same engine platform .
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