Multiquip 2156 Engine Robin EX170D50040 6.0 HP

The Multiquip 2156 Engine Robin EX170D50040 6.0 HP is a genuine OEM engine designed for Whiteman and International ride-on and walk-behind power trowel models including HHN34TVD, J36-M30, JWN24HTCSL, HHNG5, HHXDF4-DF5, EHHNK5, HTNS5S-2, JTNSW24HTCSL, JTNSW20HTCSL, JTNSW20, JTNS20, HHXD5-ES, HHXG5, HHXD5, HHN31V, HTN28K, HTN27K, and HTN-series equipment. As a direct OEM replacement, part 2156 is sourced from Multiquip to ensure the engine fits and functions exactly as the original unit did at the time of manufacture. This engine is the correct specification for a wide range of HHN and HTN series ride-on trowels as well as J-series walk-behind trowels, making it a versatile powerplant solution across the Whiteman trowel lineup.

Key Features

• Genuine OEM Engine Assembly — Sourced directly from Multiquip as part number 2156, this Robin EX170D50040 unit meets the original design specification for power output and displacement, not a generically rated substitute.
• Correct Engine Model Match — Specifies the Robin EX170D50040 engine code exactly, so there is no guesswork about compatibility with the carburetor, mounting configuration, or PTO interface already on your trowel.
• Broad Trowel Compatibility — Confirmed fitment across HHN, HTN, JWN, and J36-series Whiteman and International power trowels, covering both ride-on and walk-behind machines in the Multiquip portfolio.
• Full Power Restoration — A fresh 6.0 HP Robin engine returns the trowel to its rated blade speed and finishing torque, eliminating the hard-start, rough-running, and power-loss symptoms that come with a worn or seized powerplant.
• Long-Term Corrosion and Wear Resistance — Robin EX-series engines are built with cast-iron cylinder liners and treated aluminum castings, supporting extended service intervals even in the dusty, high-vibration environment of concrete finishing work.

The engine is the primary power source for a ride-on or walk-behind power trowel, converting fuel into rotational output that drives the gearbox and ultimately spins the finishing blades. On trowel applications, consistent engine output directly controls blade pitch response and surface speed, both of which affect the quality of the concrete finish. When an engine loses compression, runs rough, or fails to start reliably, the trowel cannot maintain the consistent blade RPM needed for a flat, burnished finish — making a correct engine replacement critical to getting the machine back to full working condition.

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.