31L777

Briggs & Stratton 31L777 – 18.5HP Vertical Shaft Engine (Electric Start)

Description: Heavy-duty vertical shaft OHV engine designed for riding mowers, garden tractors, and commercial turf equipment, featuring electric start and durable cast iron construction for long service life.

The Briggs & Stratton 31L777 is a heavy-duty 18.5 horsepower vertical shaft engine built for riding lawn mowers, garden tractors, and commercial turf equipment. Designed for consistent torque delivery and long-term durability, it performs reliably in demanding mowing and outdoor maintenance conditions.

Powered by a robust OHV (Overhead Valve) engine design, this model offers improved fuel efficiency, cooler operation, and stronger torque output compared to older flathead engines. Its electric start system provides quick and effortless ignition, making it convenient for frequent daily use in landscaping and property maintenance.

Built with durability-focused components such as a cast iron cylinder sleeve and pressure lubrication system, the 31L777 is engineered for extended engine life and stable performance under heavy workloads.

Key Features

- Powerful 18.5HP output for heavy-duty mowing
- Electric start for fast and easy operation
- OHV engine design for efficiency and durability
- Ideal for riding mowers and turf equipment
- Cast iron cylinder sleeve for extended engine life
- Heavy-duty air filtration for dusty environments
- Fuel-efficient operation for long working hours
- Simple maintenance and repair-friendly design
- Available CARB/EPA compliant versions
- Built for commercial landscaping use

Applications

- Riding lawn mowers
- Garden tractors
- Commercial landscaping equipment
- Turf maintenance machines
- Outdoor property maintenance tools