You can rely on your WORKMASTERâ„¢ tractor for years of dependable, trouble-free performance. Turbocharged, large-displacement three-cylinder engines deliver improved power and torque, while still being quiet and fuel-efficient. The 35- and 40-horsepower engines feature a common rail, direct-injected, electronic fuel management system. Despite being compact, WORKMASTERâ„¢ tractors feature a big tractor backbone with heavy castings for the engine, transmission, and rear axles. A cast iron block, heavy-duty internal components and proven technology mean you can expect years of reliability from your WORKMASTER. WORKMASTERâ„¢ tractors are designed with engine features that make you more productive. The Engine Speed Management feature on WORKMASTER 35 and 40 makes it easy to maintain a constant engine speed during PTO operations. Just set the engine speed your task requires and return to that setting at the touch of a button.