The Wacker Neuson Flywheel is a genuine OEM component designed for the PTS4V and PTS4V(I) 100mm/4-inch centrifugal trash pumps and the GPS8500 and GS8.5V portable generators with electric start. Sourced directly from Wacker Neuson, this flywheel meets the exact design and dimensional standards of the original part. It is a direct replacement for the factory flywheel across all compatible PTS4V and GPS8500 series machines. If you are restoring engine performance or addressing a failed ignition system, verifying your fitment against part number ensures you are ordering the correct component the first time.
Key Features
- Genuine OEM Magnetic Precision: — Manufactured to Wacker Neuson's original magnetic mass and pole specifications, ensuring the ignition system fires at the correct timing interval every time.
- Drop-In Engine Compatibility: — Engineered to bolt directly onto the crankshaft of the original engine configuration used across PTS4V and GPS8500 series machines, maintaining proper balance and torque transfer.
- Broad Fitment Coverage: — Confirmed fitment across multiple PTS4V pump variants and GS8.5V and GPS8500 portable generator models, making it a versatile stock item for mixed fleets.
- Restored Engine Starting and Output: — A worn or cracked flywheel can cause hard starting, erratic RPM, weak spark, or complete no-start conditions; replacing it with 5000208197 restores consistent ignition trigger and smooth power delivery.
- Ignition System Integrity: — Because the flywheel carries the magnets that drive the ignition coil, using the correct OEM part ensures the coil gap and magnetic field strength remain within spec — critical for reliable operation of fuel-powered pumps and generators.
The flywheel is a heavy rotating disc bolted to the engine crankshaft that serves two essential roles: it smooths out the pulses of the combustion cycle to keep the engine running evenly, and it carries the permanent magnets that pass the ignition coil to generate the spark needed to fire the engine. On trash pumps and portable generators like the PTS4V and GPS8500 series, the flywheel also acts as the primary driver of the recoil or electric start system. When a flywheel cracks, becomes magnetically weakened, or loses balance, symptoms range from rough running and weak spark to complete failure to start — conditions that take a pump or generator out of service when it is needed most.
Part Details
| Part Number | 5000208197 |
|---|---|
| Old Part Number | 0208197 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Flywheel |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| 100mm/4in Centrifugal Trash Pu mp | PTS4V | 5000007691, 5000007683, 5000620971, 5100031221 |
| Portable Generator with Electr ic Start | GPS8500 | 5000008286 |
| Portable Generator with Electr ic Start | GS8.5V | 5000007661 |
| PTS4V(I) Pump | PTS4V(I) | 5000620972 |
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.
