The engine will have a three year limited warranty through the manufacturer.
Free Gift Card Details
- The promotion will be automatically applied on the Shopping Cart page.
- To qualify for this offer, your order subtotal must equal $100 or more. Excludes gift cards, free item offers, warranties, Advantage memberships, tax and shipping.
- Free gift cards will be issued in the form of e-gift cards only, not physical gift cards.
- E-gift cards will be sent to the email address used in your billing address when your order ships or is picked up.
- Free e-gift cards expire 10/01/26.
- Promo code not valid on prior purchases or on Honda and STIHL products and cannot be combined with other promotional offers.
- Valid online and in participating retail stores.
- Limited-time offer. Subject to change without notice.
Briggs & Stratton V-Twin Small Block Vertical Engine, 627cc, 1 1/8in. Dia. Shaft, Model# 386777-0144-G1

This is a carousel with one large zoomable image and a track of thumbnails on the left. Select any of the thumbnail buttons to change the zoomable image on the right. If a thumbnail is a video or 360 degree image thumbnail, or the last thumbnail in the list, the button will open the product media modal.

Click or Tap image to Zoom
Shipping:
Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- Model# 386777-0144-G1; 627cc engine displacement with 23 HP output and 3600 RPM with 1 1/8in. dia. vertical shaft
- V-twin small block design is lightweight, compact and reliable
- 12 Volt electric start with 4-pole starter solenoid and Magnetron electronic ignition
- Dura-Bore cast iron cylinder sleeve adds durability
- Great for use in commercial mowing applications
See full description
Description
Key Specs
Reviews
Q & A
Accessories
Warranty
Compare
Product Summary
What's Included
- (1) Engine, Model# 386777-0144-G1
Downloads
Features + Benefits
- Model# 386777-0144-G1; 627cc engine displacement with 23 HP output and 3600 RPM with 1 1/8in. dia. vertical shaft
- V-twin small block design is lightweight, compact and reliable
- 12 Volt electric start with 4-pole starter solenoid and Magnetron electronic ignition
- Dura-Bore cast iron cylinder sleeve adds durability
- Great for use in commercial mowing applications
- Advanced debris management
- Full pressure lubrication with spin-on oil filter keeps the engine running smoothly
- Centrally located oil pump and pickup plus an oil cooler
- High efficiency head design
- Lightweight piston and ring package
- Dynamically balanced crankshaft
- Low-profile Dual-Clean air cleaner
- Mechanical compression release
- Poly-Core blower housing
- Commercial-style carburetor
- Buyer protection package provides 3-year commercial limited warranty
- Not for sale in CA
Key Specs
| Attribute | Specification |
|---|---|
item# | 103806 |
Brand | Briggs & Stratton |
Manufacturer's Warranty | 36 months parts/36months labor |
Ship Weight | 151.0 LB |
Engine Displacement | 627 cc |
Engine Type | Vanguard V-twin |
Shaft Diameter | 1-1/8 in |
Fuel Type | Gasoline |
Start Type | Electric |
Shaft Keyway | 0.25 in |
Crankshaft | Vertical |
Cylinders (qty.) | 2 |
Cylinder Bore | Cast Iron |
Net Power Output | 23 HP |
Fuel Tank | No |
Oil Capacity | 1.5 qt |
Low Oil Shutdown | No |
Low Oil Alert | No |
| Attribute | Specification |
|---|---|
Max. RPM | 3,600 |
CARB Approved | No |
Shaft Rotation (From PTO Shaft Side) | Counter Clockwise |
Governor System | Mechanical |
Ignition System | Electronic |
Carburetor | Float |
Lubrication System | Full Pressure |
Bearing Type | Ball |
Auto Compression Release | Yes |
Cooling System | Air |
Bore | 2.97 in |
Stroke | 2.76 in |
Air Cleaner Type | Single Element |
Throttle Control | Remote |
Fuel Filter | Yes |
Charging System Amps | 16 |
Muffler Included | No |
Product Weight | 93 lb |
Reviews
Questions & Answers
Questions
-
· a month ago
What is the warranty on this product?
1 answer-
ProductExpert11· a month ago
Helpful?
-
-
· a year ago
Will this work with no problems or modifications
1 answer-
ProductExpert30· a year ago
This engine would be designed be able to mount without modifications.
Helpful?
-
-
· a year ago
what is the mounting hole pattern for this engine?
1 answer-
ProductExpert23· a year ago
The mounting hole pattern for the Briggs & Stratton V-Twin Small Block Vertical Engine (Model 386777-0144-G1) is 7.75 inches by 4.5 inches.
Helpful?
-
-
· 4 years ago
The spec sheet does'nt include the shaft length, can i get it from you?
1 answer-
ProductExpert12· 4 years ago
This engine has a 4" shaft.
Helpful?
-
Accessories We Recommend
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.
Warranty
Manufacturer's Warranty
36 months parts/36months 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.
Compare with Most Popular in Vertical Engines
See All Vertical Engines
See All Briggs & Stratton Vertical Engines
Currently Viewing This Product
Item # 103806
$1514.65Shipping:
Factory shippedHeavy/large item. Lift gate service available.
Store Pickup:
Not available - online only
- $239.04
Shipping:
Factory shippedStore Pickup:
Not available - online only
Item # 114591
$2591.20Shipping:
Factory shippedStore Pickup:
Not available - online only
Item # 114592
$1721.99Shipping:
Factory shippedStore Pickup:
Not available - online only
Specifications
627 cc
163 cc
747 cc
725 cc
Vanguard V-twin
Vertical OHV Gas
Vertical Gas
Vertical Gas
1-1/8 in
-
1-1/8 in
1 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
23 HP
-
25 HP
21 HP
No
-
-
-
1.5 qt
-
2 qt
2 qt
No
-
Yes
No
No
-
-
No
3,600
-
3,600
3,600
No
No
-
-
Counter Clockwise
-
Counter Clockwise
Counter Clockwise
Mechanical
-
Variable Speed
Mechanical
Electronic
-
Electronic
-
Float
-
Smart Choke
Evap/carb
Full Pressure
-
Full Pressure
Pressure
Ball
-
Parent Material
Parent Material
Yes
-
-
-
Air
-
Air
Air
2.97 in
-
3.3 in
3.3 in
2.76 in
-
2.7 in
2.6 in
Single Element
-
Single Element
Single Element
Remote
-
Remote
Remote
Yes
-
-
Yes
16
-
15
15
No
-
No
No
93 lb
-
lb
92.0000 lb
-
-
3.35 in
3.16 in
-
-
55.3 ft-lbs.
40.7 ft-lbs.
-
-
3.356 in
-
-
-
9.1:1
9.1:1
-
-
Remote
Remote
-
-
7.656 in
10 in
-
-
5.736 in
10 in
-
-
7.656 in
10 in
-
-
20.5 x 16.2 x 19.9 in
18.8 x 17.5 x 17.0 in
-
-
-
2 qt
See All Vertical Engines
See All Briggs & Stratton Vertical Engines
Recently Viewed Items
This is a carousel with auto-rotating slides. Activate any of the buttons to disable rotation. Use Next and Previous buttons to navigate, or jump to a slide with the slide dots.





