Description
Overview:
This Genuine Stihl flywheel (part no. 4238 400 1202) is an OEM replacement for the TS 410 and TS 420 cut-off saws. Cast from durable aluminium alloy, it features integrated cooling fins and embedded magnets for the ignition system. The flywheel provides rotational inertia to keep the engine running smoothly at idle and through acceleration, while the fins move cooling air around the cylinder for consistent operating temperature. Precision-balanced and made to Stihl's specifications, it restores correct ignition triggering and stable engine behaviour when the original unit is worn, damaged, or corroded. A direct-fit component for professional cutters and DIY users who need dependable performance from their Stihl cut-off saws.
Key Features:
- Genuine Stihl OEM part for assured fit and performance on TS 410 and TS 420
- Cast aluminium alloy construction with integrated magnets and cooling fins for reliability and efficient cooling
- Correctly balanced to reduce vibration and maintain smooth running and pick-up
- Restores proper magneto triggering and ignition timing consistency
- Direct replacement on the original crankshaft taper and keyway for straightforward installation
- Durable finish resists corrosion and debris common in cutting environments
- Supports stable idle, easier starting, and steady cutting performance under load
- Manufactured to OEM tolerances for long service life
Typical Applications:
Suitable for maintaining and repairing Stihl TS 410/TS 420 cut-off saws used in construction, landscaping, utilities, and hire fleets. Ideal when the original flywheel has damaged fins, loosened magnets, imbalance, or wear that affects starting, idle quality, cooling airflow, or ignition stability during concrete, masonry, or metal cutting tasks.
Also known as:
Ignition flywheel, magneto rotor, engine flywheel, balance wheel, rotor wheel, fan wheel, crankshaft flywheel, motor rotor.
Fits Models:
TS 410
TS 420
Alternate Part Numbers:
4238-400-1202, 42384001202
Product Specifications
| L&S Part No. | 4238 400 1202 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42384001202 |
| Unit of Sale | 1 |
| Machine Type | Disc Cutters |
| Fits Brands | Stihl |
| Key Features | - Genuine Stihl OEM part for TS 410 and TS 420 - Cast aluminium alloy with integrated magnets and cooling fins - Precision-balanced for reduced vibration and smooth operation - Direct replacement on original crankshaft taper and keyway - Restores proper magneto triggering and ignition timing consistency |
| Fits Models | TS410, TS420 |
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