Wacker Neuson 5000074680 Flywheel Complete

The Wacker Neuson Flywheel Complete is a genuine OEM component designed for a wide range of Wacker Neuson walk-behind concrete trowels, portable generators, and centrifugal trash pumps — including the CT36-8A, CT48-8A, GP3800A, and PT3A series. As a factory-sourced part, the is manufactured to the exact specifications required by these machines, ensuring correct balance, ignition timing compatibility, and long-term durability. This flywheel also fits select BPU reversible vibratory plate compactors and BFS floor saw models that share the same engine platform. If your machine is showing rough idling, hard starting, or ignition-related faults, the Flywheel Complete may be the root cause.

Key Features

• OEM-Balanced Mass and Geometry — Manufactured to Wacker Neuson's original rotational balance specs, ensuring smooth engine operation and correct magneto timing output across the entire RPM range.
• Direct Drop-In Installation — The 5000074680 is engineered to match the original crankshaft taper, keyway, and bolt pattern, allowing a straight swap with no machining or adaptation.
• Broad Cross-Platform Fitment — Fits CT36 and CT48 walk-behind trowels, GP3800A and G3.7A portable generators, PT3A trash pumps, and select BPU reversible plate compactors sharing the same engine configuration.
• Ignition System Integrity — The flywheel's integrated magnets generate the electrical charge that powers the ignition coil. A cracked, worn, or magnetically degraded flywheel leads to weak spark, misfires, or complete no-start conditions.
• Electrical Safety Compliance — On generator models such as the GP3800A, the flywheel also drives the charging system. A correctly seated and torqued OEM flywheel maintains proper output and reduces the risk of electrical faults downstream.

The flywheel is a precision rotating mass bolted to the end of the engine crankshaft. It stores rotational energy to smooth out the power pulses of a single-cylinder engine, keeping it running evenly between firing strokes. Crucially, the flywheel also carries a set of permanent magnets that pass by the ignition coil on every revolution, generating the electrical charge needed to fire the spark plug — and on generator models, to supply the alternator system. When the flywheel develops cracks, loses a magnet, or is incorrectly torqued, the result is typically a weak or absent spark, rough running, or a machine that won't start at all. Replacing it with a genuine OEM part like the Wacker Neuson 5000074680 restores correct timing and energy output without guesswork.

Part Details

Compatibility & Fitment

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.