The Wacker Neuson Flywheel is a genuine OEM component designed for the GPS5600A, GPS6600A, and GS series portable generators. As a direct OEM replacement, this flywheel is manufactured to the same specifications as the original part, ensuring correct fit and function across the full range of compatible Wacker Neuson generator models. Fitment covers a wide span of GPS and GS series units, including both 50Hz and standard-frequency configurations with electric start. Keep part number on hand to minimize unplanned service delays on your generator fleet.
Key Features
- Genuine OEM Construction — Manufactured to original mass and balance tolerances, ensuring the flywheel delivers the correct rotational inertia for stable engine output and consistent power generation.
- Direct-Fit Replacement — Engineered to mount directly to the crankshaft using the original bolt pattern and taper, requiring no rework to surrounding components during installation.
- Broad Generator Compatibility — Fits GPS5600A, GPS6600A, GS4.6A, GS4.6AE, GS5.5A, GS5.6A, GS5.7A, GS5.7AE, GS5.7AI, and GS4.6AI series portable generators across multiple machine configurations.
- Sustained Engine Smoothness — A properly functioning flywheel stabilizes engine RPM under load fluctuations; a worn or damaged flywheel causes rough running, surging output voltage, and accelerated wear on connected drivetrain components.
- Verified Part Number — Ordering by Wacker Neuson part number 5000084636 confirms you receive the correct flywheel for your specific GPS or GS series generator, not a generic substitute.
The flywheel is a heavy rotating disc bolted to the engine crankshaft. Its primary role is to store rotational energy between combustion strokes, smoothing out the power pulses that would otherwise cause the engine to surge or stall — particularly important in a generator where consistent RPM directly determines stable output voltage and frequency. The flywheel also typically carries the ring gear used by the electric starter motor and may house magnets that drive the ignition system. When a flywheel cracks, becomes unbalanced, or sustains damage to the ring gear or magnetic components, the engine will run roughly, the starter may fail to engage cleanly, and ignition timing can be affected — all of which degrade generator performance and can lead to broader engine damage if left unaddressed.
Part Details
| Part Number | 5000084636 |
|---|---|
| Old Part Number | 0084636 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flywheel |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| GPS5600A,CAN GFI | GPS5600A | 5000620096, 5000620383, 5000620328, 5000620044, 5000620093, 5000620013, 5000620981 |
| GPS6600A GENERATOR,CAN GFI | GPS6600A | 5000620102, 5000620386, 5000620331, 5000620047, 5000620099, 5000620016 |
| GPS6600A Generator, CSA | GPS6600 | 5000620988 |
| 50Hz Portable Generator with E lectric Start | GS5.7AE | 5000008285, 5000008279, 5000008281, 5000008283 |
| Portable Generator with Electr ic Start | GS5.6A | 5000007191, 5000008046 |
| 50Hz Portable Generator with E lectric Start | GS4.6A | 5000008275, 5000008271, 5000008273, 5000008269 |
| 50Hz Portable Generator with E lectric Start | GS4.6AE | 5000008276, 5000008270, 5000008272, 5000008274, 5000008277 |
| 50Hz Portable Generator with E lectric Start | GS5.7A | 5000008284, 5000008278, 5000008280, 5000008282 |
| Portable Generator with Electr ic Start, 50Hz | GS5.7AI | 5000009039 |
| 50Hz Portable Generator with E lectric Start | GS5.5A | 5000007105 |
| 50Hz Portable Generator with E lectric Start | GS4.6AI | 5000009038 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
