The Husqvarna 506351001 Crankshaft Assembly is a genuine OEM component designed for the K650, K700, and K650CutnBreak power cutters. Built to Husqvarna's original engineering specifications, this assembly delivers the dimensional accuracy and material integrity required for dependable engine operation in demanding cut-off applications. DHS Equipment supplies this part to help keep your equipment running at full capacity. Cross-reference part number 506351001 against your parts diagram before ordering to confirm fitment for your specific machine configuration.
Key Features
- OEM-Spec Crankshaft Tolerances — Manufactured to Husqvarna's original dimensional and metallurgical standards, ensuring correct bearing journal geometry and balance for smooth, high-RPM engine operation.
- Direct Assembly Replacement — Engineered as a complete assembly that drops into the engine casing using the original mounting configuration, preserving factory alignment without modification.
- Broad Power Cutter Compatibility — Fits the K650, K700, and K650CutnBreak power cutters, covering a wide range of Husqvarna's professional handheld cutting equipment.
- Restored Engine Power and Smooth Operation — A worn or damaged crankshaft causes vibration, power loss, and accelerated internal wear. Replacing it with this genuine assembly restores proper combustion stroke conversion and consistent blade speed under load.
- Critical Engine Integrity — As the core rotating component of the two-stroke engine, a correctly spec'd crankshaft is essential to safe, controlled machine operation — particularly during high-load concrete and masonry cutting.
The crankshaft is the central rotating shaft of the power cutter's two-stroke engine, converting the linear force of each combustion stroke into the rotational power that drives the blade. It works in conjunction with the connecting rod, piston, and bearings to maintain a consistent power cycle at high engine speeds. When a crankshaft wears, bends, or sustains bearing damage, the engine develops rough running, excessive vibration, and loss of cutting power — and continued use risks catastrophic internal engine failure.
Part Details
| Part Number | 506351001 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Crankshaft Assembly |
Compatibility & Fitment
| Name | Model |
|---|---|
| Power Cutter | K650 |
| Power Cutter | K700 |
| Power Cutter | K650CutnBreak |
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.
