Briggs & Stratton 44S977-0033-G1 Vertical Engine, Replaces

Description

Briggs & Stratton 44S977-0033-G1 Vertical Engine, Replaces – BS,44S977-0033-G1

Briggs & Stratton 44S977-0033-G1 Vertical Professional Series Engine, 25.0 Gross HP, 724cc, 1-1/8″ x 4-19/64″ Crankshaft, 1/4″ Keyway, 7/16″-20 Drilled & Tapped, Remote Controls, Fuel Pump, 12 Volt Gear Drive ReadyStart with 16 Amp DC Alternator, Replaces 44S877-0001-G1, 44Q777-3136-G5 and 44Q777-0136-G1

Features

Mechanical compression release for easy, reliable starting

Chrome plated exhaust valves reduce valve wear for longer life

Premium high-capacity air, oil and fuel filters provide longer maintenance intervals and more engine protection

Super-finished crank pin bearing for reduced friction and wear

Advanced Debris Management System with a dual seal, cartridge style air filter provides maximum protection and extends engine life

Specifications

Brand	Briggs & Stratton
Model Number	44S977-0033-G1
Internal ID	BS-44S977-0033-G1
Replaces Models	44S877-0001-G1, 44Q777-3136-G5, 44Q777-0136-G1, 44Q777-0006-G1, 44P777-0016-G1, 44P777-0016-E1
Warranty	2 Year Consumer / 1 Year Commercial
Available to California	Not Available to Ship to California
What’s in the Box	Includes engine, owner’s manual, and exhaust gaskets
Weight	84.0 lb
Power Output	25.0 Gross HP
Max RPM	3400
Crankshaft Orientation	Vertical
Crankshaft Type	Straight
Crankshaft Diameter	1-1/8″
Crankshaft Length	4-19/64″
Crankshaft Dimensions	1-1/8″ x 4-19/64″
End Tapped Size	7/16″-20
Rotation Direction	Counterclockwise
Ignition System	Electronic
Carburetor	Float
Number of Cylinders	Two
Cylinder Bore	Cast Iron Sleeve
Air Cleaner	Cartridge with Pre Filter
Oil Cooler	No
Oil Capacity	64 fl. oz.
Low Oil Alert	No
Low Oil Shutdown	No
Fuel Type	Gasoline
Fuel Tank Capacity	None
Fuel Pump	Yes
Controls	Remote
Bolt Circle	10″
Bore x Stroke	3.12″ x 2.89″
Charging System	16 Amp DC Alternator
Flywheel	Heavy
Equipment Manufacturers	Bad Boy, Bobcat, Country Clipper, Craftsman, Dixie Chopper, Dixon, EverRide, Ferris, Gravely, Great Dane, Land Pride, Husqvarna, Hustler, John Deere, MTD, Poulan, Scag, Sears, Simplicity, Woods, Wright Stander
Equipment Types	Zero Turn Mowers, Lawn Tractors, Riding Mowers

What Our Experts Think

The Briggs & Stratton 44S977-0033-G1 Vertical Engine is a reliable and powerful option for a variety of outdoor applications. Here’s why it’s a great choice:

Direct Replacement: Designed to replace specific models, ensuring compatibility and a seamless fit with existing equipment.
Robust Performance: Provides ample horsepower for lawn mowers, garden tractors, pressure washers, and more.
Vertical Shaft Design: Perfect for equipment that requires a vertical engine configuration, offering versatility and broad application.
Built for Durability: Constructed with high-quality materials for long-lasting use and minimal maintenance.
Easy Start System: Features a quick and reliable start, even in challenging conditions, ensuring ease of use.
Fuel-Efficient: Engineered to deliver power while minimizing fuel consumption, reducing operational costs.
Low Maintenance: Requires minimal upkeep, making it a hassle-free option for users seeking long-term reliability.

Q&A

Q: What is the Briggs & Stratton 44S977-0033-G1 Vertical Engine?
A: The Briggs & Stratton 44S977-0033-G1 is a high-performance vertical engine designed to provide reliable power for a variety of outdoor equipment, serving as a direct replacement for older engine models.

Q: What are its key features?
A: It features a 541cc displacement, a vertical shaft design for easy compatibility with a range of outdoor equipment, overhead valve (OHV) technology for greater fuel efficiency, and a durable cast-iron sleeve for enhanced engine durability.

Q: What equipment is this engine best suited for?
A: This engine is ideal for use in riding mowers, lawn tractors, and other outdoor machinery that require a vertical shaft engine.

Q: Is it fuel-efficient?
A: Yes, the engine is designed to optimize fuel efficiency while maintaining powerful performance and minimizing emissions.

Q: Why choose the Briggs & Stratton 44S977-0033-G1 Engine?
A: With its robust construction, fuel-efficient performance, and reliable output, this engine is perfect for replacing older models and ensuring dependable power in various lawn and garden equipment.

Maintenance Tips

Check and Change Oil: Use SAE 30 or 10W-30 oil. Change the oil after the first 5 hours, then every 50 hours of use or per manufacturer guidelines. Always check oil levels before starting the engine.
Inspect and Clean Air Filter: Clean or replace the air filter every 25 hours to prevent dirt from clogging the filter and affecting engine performance.
Check and Replace Spark Plug: Inspect the spark plug every 100 hours or annually. Replace it if dirty, worn, or damaged to maintain smooth engine operation.
Use Fresh Fuel: Always use fresh fuel with an octane rating of 87 or higher. Avoid ethanol blends exceeding 10% and add a stabilizer if storing fuel for extended periods.
Keep Cooling System Clean: Remove dirt and debris from the engine’s cooling fins to ensure proper airflow and prevent overheating.
Inspect and Tighten Components: Periodically check bolts, nuts, and engine mounts for tightness to prevent excessive vibrations and ensure proper engine function.
Fuel System Maintenance: Inspect the fuel lines and filter for leaks or clogs. Clean or replace the filter and lines if necessary.
Proper Storage: If storing for a long period, drain the fuel tank, clean the engine, and store it in a dry, cool place to prevent corrosion and fuel degradation.

Additional information

Weight	84.0 kg
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