Briggs & Stratton 31R907-0007-G1 17.5HP 500cc Engine – 1in Shaft, Electric Start

Description

During continuous 8-hour commercial mowing shifts, the Briggs & Stratton 31R907-0007-G1 vertical shaft engine sustains constant cutting torque without thermal sag. Contractors face mounting service costs when underpowered walk-behind engines bog down in thick turf and overheat crankcase oil. Displacing 500cc with a durable cast-iron cylinder sleeve, this overhead valve engine delivers continuous power while keeping operating temperatures low.

A bent drive shaft or stripped keyway ruins an entire day of scheduled property maintenance. The 1-inch output shaft withstands high side-loads from drive belts and sudden blade impacts with landscape edging. Splash lubrication feeds continuous oil to the connecting rod bearing, while the electric start system eliminates manual cranking to get crews moving fast at every stop.

Technical Features of Briggs & Stratton 31R907-0007-G1

• 500cc 17.5HP Overhead Valve Engine: Delivers robust rotational torque to drive riding mower cutting decks and hydrostatic transmissions.
• 1-Inch Keyed Vertical Shaft: Matches commercial electric PTO clutches and transmission drive pulleys.
• Durable Cast-Iron Sleeve Liner: Prevents cylinder distortion and oil consumption during sustained high-temperature running.
• 12V Electric Starter Motor: Provides effortless key-switch starts across all weather conditions.
• Dual-Stage Filtration Protection: Stops fine dust and grass chaff from entering the induction tract.

Heavy-Duty Architecture & Low Maintenance

Built for professional landscape crews, this engine delivers high torque output and reliable starting across long summer workdays.

• Abrasion-resistant cast iron cylinder walls and reinforced lower bearing housings survive tough jobsite abuse across continuous summer workdays.
• Reduced oil consumption and extended spark plug life cut fleet shop maintenance overhead for commercial landscape contractors.
• Standard vertical base bolt dimensions allow fast drop-in repower swaps without deck modification delays.

Equipment Integration & Fitment Specs

Weighing 65 pounds dry with a standard three-bolt vertical mounting base and 1-inch shaft, this motor drops into commercial lawn tractors, wide-area turf equipment, and heavy leaf vacuums.

Commercial Coverage & Maintenance Upkeep

• Factory warranty terms provide 2-Years of commercial and consumer coverage on all core mechanical assemblies.

Service this engine with fresh 10W-30 motor oil every 50 operating hours. Tap clean the air filter element weekly on dusty job sites, and maintain the spark plug electrode gap at 0.030 inches. Order the Briggs & Stratton 31R907-0007-G1 vertical shaft engine from Mulmotor.com for guaranteed factory-fresh units, complete manufacturer warranty coverage, and dedicated commercial equipment support.