Rhino CS177ESH Electric Start 9HP 270cc Engine
Carroll Stream Motor Company

Keyed - Straight 1" Diameter, 1/4" Shaft

The Rhino CS177ESH 9HP Gas Engine from Carroll Stream Motor Company is a powerful and highly efficient replacement engine built for heavy-duty applications that require high torque output. This 270cc 4-stroke OHV engine features a 6:1 gear reduction, making it perfect for machinery that demands extra pulling power at lower speeds. Utilize on hydraulic pumps, cement mixers, sawmills, compactors, pressure washers, grain augers, and log splitters.

Built for High Torque Applications

Thanks to its 6:1 gear reduction system, the Rhino CS177ESH significantly increases low-end torque, allowing equipment to run smoothly even under load. This makes it a better choice than standard small engines when operating machinery that needs strong, controlled rotational force instead of raw RPM speed. With 9HP at 3600 RPM and 11.4 ft-lbs of torque, this engine is well suited for commercial-grade tasks.

Easy Electric Start + Recoil Backup

The CS177ESH comes standard with both electric start and recoil pull-start backup, giving you the flexibility to start your equipment quickly in all conditions. The electric ignition system allows for fast startups with minimal effort, while the manual recoil ensures reliability when a battery is not available or when working in remote jobsite locations.

Engineered for Durability & Long Operating Life

This engine is built with a cast iron cylinder sleeve for added durability and wear resistance. The splash lubrication system and forced air cooling work together to keep internal components protected during extended use. A low-oil shutdown feature is also included for added protection, automatically turning off the engine when oil levels drop below safe operating limits.

Perfect for commercial facility or a remote outdoor worksite, the Rhino CS177ESH is designed to withstand tough, continuous workloads. Equipped with a 1.58-gallon fuel tank, this 9HP gear reduction engine delivers long, uninterrupted operating time with fewer refueling stops. Ideal for long-duration tasks. It runs on standard unleaded gasoline (86 octane or higher), keeping fuel costs low while maintaining excellent performance.

Versatile, Compatible 1" Horizontal Shaft

The engine features a 1-inch keyed straight shaft (1/4" keyway), with a 3-1/2” total shaft length and 2-7/8” usable length, providing easy integration with a wide range of OEM and aftermarket equipment. This universal fitment makes the CS177ESH a practical, drop-in replacement for many older or worn-out industrial small engines.

Full Re-buildability & Ongoing Parts Support

Like all Rhino and Carroll Stream engines, the CS177ESH is fully re-buildable with readily available replacement parts. Our Michigan-based support team provides assistance with installation guidance, part sourcing, and maintenance support, ensuring long-term usability and investment protection.

Since 2005, Carroll Stream Motor Company has helped contractors, shop owners, and DIY users power their equipment with reliable small engines built for performance and longevity. Every order ships fast and free to the lower 48 states, with same-day shipping available on most in-stock units.

If you need a dependable upgrade or a strong replacement engine, this model delivers the perfect mix of power, control, and long-term durability. Order today to take advantage of free shipping, expert support, and fast fulfillment from Carroll Stream Motor Company.

Note: This engine cannot be shipped to California.