This Briggs & Stratton engine will require 62 - 64 ounces of oil.
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Briggs & Stratton Twin Cylinder Vertical Shaft Engine with Electric Start, 25HP, 1in. x 3 5/32in. Shaft, Model# 44S977-0032-G1

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Shipping:
Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- Model# 44S977-0032-G1; 25 HP, 724cc twin cylinder engine with 1in. x 3 5/32in. vertical shaft
- Magnetron electronic ignition for fast, easy, effortless starts
- Ready Start system with electric start provides easy starts without the need to choke the engine
- Dura-Bore cast iron cylinder sleeve delivers extended life
- Premium Dual Clean air filtration system keeps the engine running clean
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Description
Key Specs
Reviews
Q & A
Accessories
Warranty
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Product Summary
What's Included
- (1) Engine, Model# 44S977-0032-G1
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Features + Benefits
- Model# 44S977-0032-G1; 25 HP, 724cc twin cylinder engine with 1in. x 3 5/32in. vertical shaft
- Magnetron electronic ignition for fast, easy, effortless starts
- Ready Start system with electric start provides easy starts without the need to choke the engine
- Dura-Bore cast iron cylinder sleeve delivers extended life
- Premium Dual Clean air filtration system keeps the engine running clean
- Maintenance-free design
- Includes a fuel pump, oil filter and 16 Amp charging system
- Not for sale in CA
Key Specs
| Attribute | Specification |
|---|---|
item# | 73151 |
Brand | Briggs & Stratton |
Manufacturer's Warranty | 24 months parts/24months labor |
Ship Weight | 151.0 LB |
Engine Displacement | 724 cc |
Engine Type | Twin |
Shaft Diameter | 1 in |
Shaft Length | 3.15 in |
Fuel Type | Gasoline |
Start Type | Electric |
Shaft Keyway | 0.25 in |
Crankshaft | Vertical |
Cylinders (qty.) | 2 |
Cylinder Bore | Cast Iron |
Net Power Output | 25 HP |
Fuel Tank | No |
Oil Capacity | 2 qt |
Low Oil Shutdown | No |
Low Oil Alert | No |
Max. RPM | 3,300 |
| Attribute | Specification |
|---|---|
CARB Approved | No |
Shaft Rotation (From PTO Shaft Side) | Counter Clockwise |
Governor System | Mechanical |
Ignition System | Electronic |
Carburetor | Yes |
Lubrication System | Pressure |
Bearing Type | Plain |
Auto Compression Release | Yes |
Cooling System | Air |
Bore | 3.12 in |
Stroke | 2.89 in |
Air Cleaner Type | Dual Element |
Choke Control | Automatic |
Throttle Control | Remote |
Fuel Filter | Yes |
Charging System Amps | 16 |
Muffler Included | No |
Product Weight | 84.0000 lb |
Dimensions L x W x H (in.) | 18.81 x 18.0 x 15.0 in |
Reviews
Questions & Answers
Questions
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· 5 years ago
It says it has a 64 quart oil capacity. Obviously this is incorrect. What is the actual capacity?
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ProductExpert18· 5 years ago
Helpful?
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Stevie94· 5 years ago
64 oz (2 Quarts)
Helpful?
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· 9 months ago
need part number air filter, fuel filter and spark plugs also
1 answer-
ProductExpert12· 9 months ago
We offer the spark plug, item 100696. For the other parts, please view the Service Parts list located on pages 10-11 of the Product Manual which is located below the Product Summary on the web page. These parts can be purchased through our sister company, Jacks Small Engines. Please visit www.JacksSmallEngines.com for pricing and availability.
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· 9 months ago
Does this motor come with the starter?
1 answer-
ProductExpert6· 9 months ago
The engine would include the electric starter.
Helpful?
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· 10 months ago
can i replace my Engine Model # 44U8770011G1 with this engine?
1 answer-
ProductExpert12· 9 months ago
This engine does not have the correct shaft size to be a direct replacement for model 44U877-0011-G1. The appropriate replacement would be model 44S977-0033-G1, which is our item 75017.
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· a year ago
How can I get a throttle control bracket l need the bracket and levels
1 answer-
ProductExpert6· a year ago
Replacement parts for the engine would be available through the manufacturer.
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· a year ago
Where are the spark plugs located on this engine?
1 answer-
ProductExpert11· a year ago
The spark plug is located to the right of the oil dip stick. You will see the spark plug wire going to a small hole on the side of the engine where the spark plug is located.
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· a year ago
Is this California compliant?
1 answer-
ProductExpert11· a year ago
The engine is not CARB compliant. It is unable to be sold to the state of California.
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· 2 years ago
Is this a 6 pin ?
1 answer-
ProductExpert6· 2 years ago
The engine would be a 6 pin.
Helpful?
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· 2 years ago
Dose it come with a warranty
1 answer-
ProductExpert13· 2 years ago
This engine comes with a 2 year warranty.
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· 2 years ago
Does this engine have a manual choke and also does it have a charging system? What amperage?
1 answer-
ProductExpert6· 2 years ago
The engine would have an automatic choke control. It would have a 16 amp charging system.
Helpful?
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Warranty
Manufacturer's Warranty
24 months parts/24months labor
Extend Your Warranty Coverage with a Northern Protection Plan (NPP)
Repair Plan — 1 Year
A Northern Protection Plan is available after adding the product to your shopping cart.
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Specifications
724 cc
163 cc
747 cc
725 cc
Twin
Vertical OHV Gas
Vertical Gas
Vertical Gas
1 in
-
1-1/8 in
1 in
3.15 in
-
3.35 in
3.16 in
Gasoline
-
Gasoline
Natural Gas
Electric
Pull
Electric
Recoil
0.25 in
-
3.827 in
-
Vertical
-
Hardened
Hardened
2
-
2
2
Cast Iron
-
Cast Iron
Cast Iron
25 HP
-
25 HP
21 HP
No
-
-
-
2 qt
-
2 qt
2 qt
No
-
Yes
No
No
-
-
No
3,300
-
3,600
3,600
No
No
-
-
Counter Clockwise
-
Counter Clockwise
Counter Clockwise
Mechanical
-
Variable Speed
Mechanical
Electronic
-
Electronic
-
Yes
-
Smart Choke
Evap/carb
Pressure
-
Full Pressure
Pressure
Plain
-
Parent Material
Parent Material
Yes
-
-
-
Air
-
Air
Air
3.12 in
-
3.3 in
3.3 in
2.89 in
-
2.7 in
2.6 in
Dual Element
-
Single Element
Single Element
Automatic
-
Remote
Remote
Remote
-
Remote
Remote
Yes
-
-
Yes
16
-
15
15
No
-
No
No
84.0000 lb
-
lb
92.0000 lb
18.81 x 18.0 x 15.0 in
-
20.5 x 16.2 x 19.9 in
18.8 x 17.5 x 17.0 in
-
-
55.3 ft-lbs.
40.7 ft-lbs.
-
-
3.356 in
-
-
-
9.1:1
9.1:1
-
-
7.656 in
10 in
-
-
5.736 in
10 in
-
-
7.656 in
10 in
-
-
-
2 qt
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