Description:

Briggs Stratton 31L777 3136-G5 vertical Professional Series engine is 500cc and puts out 17.5 HP (gross horsepower). This single cylinder engine has a 1″ x 3-5/32″ crankshaft and features a 12V electric starter with 9A alternator, a fuel pump, an oil pump with filter and a muffler. Briggs Stratton Professional Series engines feature full pressure lubrication along with oil and fuel filters for a longer life with less maintenance. Chrome plated valves and advanced air filtration provide maximum protection. This engine is for use on lawn mowers. Buyer protection package provides a two-year limited consumer engine warranty. 50-State CARB Compliant. All engines purchased from us ship for free and are foam packed for added protection during transit.

Key Specifications:

• Brand: Briggs & Stratton
• Model Number: 31Q777-3136-G5
• Replaces Models: 31A777-0118-B1, 31L777-0036, 31L777-0136, 31L777-3136, 31L777-0036-E1, 31L777-0036, 31L777-0136-G1, 31L777-0136, 31L777-3136-G5, 28Q777-0536-E1, 28CH77-0036-E1, 28Q777-0536, 28CH77-0036, 31L777-0036, 31L777-0036-E1, 31L777-0136-G1, 31L777-0136-G1
• Warranty: 2 Year Consumer / 1 Year Commercial
• Shipping Weight: 81 lbs
• Displacement: 500cc
• Starter Type: Electric
• Crankshaft Orientation: Vertical
• Crankshaft Type: Straight
• Fuel System: Gasoline
• Gear Reduction: No

Crankshaft Specifications:

• Crankshaft Dimensions: 1″ x 3-5/32″
• Crankshaft Length: 3-5/32″
• Crankshaft End Tapped Size: 7/16 – 20
• Crankshaft Rotation Direction (from PTO side): Counterclockwise
• Bearing Type: Plain

Engine Specifications:

• Cylinders: 1
• Cylinder Bore Type: Cast Iron Sleeve
• Air Cleaner Type: Cartridge with Pre Filter
• Fuel Tank: No
• Fuel Pump: Yes
• Oil Cooler: No
• Oil Capacity: 48 oz
• Low Oil Alert: No
• Low Oil Shutdown: No
• Ignition System: Electronic
• Carburetor Type: Float
• Choke Control: Choke-A-matic
• Max RPM: 3300
• Charging System: 9 amps

Additional Notes:

• Bolt Circle: 10″
• Flywheel: Heavy
• PTO Height: N/A