Description
Recommended Usage: Multipurpose
Engine Type: 4 Stroke
Power Supply: Use Without Electricity
Battery Properties: Without Battery
Material: Metal
Brand: ACEUP ENERGY
Power Source: Gasoline-powered
Item ID: BG1163898
Origin: Fujian,China
Shaft 7/8″ diameter,3.16″ long, end tapped with 3/8″- 24 UNF; Keyway 3/16″
Small gas engine motor with recoil start, enrichment pump drive with primer
4.4HP 3600RPM, 4 stroke air cooled OHV with recoil start, 0.9 gallon fuel tank
Equipped with metal cams, forged crankshafts and cast iron cylinder liners to ensure superior performance and longer service life
All our engines tested in the factory to guarantee quality; EPA compliant; Backed by a 1 year limited with free lifetime technical guidance from experts
This Aceup Energy 4 stroke gas engine vertical shaft is widely used in 4/5HP Engine, replacement engine for lawn mower. The engine is equipped with metal cams, forged crankshafts and cast iron cylinder liners to ensure superior performance and longer using life. Gasoline class #87 or up is preferred.
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-e0385bd9-4751-4345-b74e-b07c60921ce9.jpg)

![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-bc86e3f9-c7fd-4a1f-a1bd-0f01dd75327e.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 2](https://yardfirm.com/wp-content/uploads/2025/10/product-fancyalgo-toaster-api-toaster-processor-image-cm2in-03ad2d72-edd5-11ef-9c15-0a580a66d8f5.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 3](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-239b66d9-93e6-4687-a356-b4682f42957a.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 4](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-b5fc8fb2-7c06-4ec2-ad0a-ddf29e5b0380.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 5](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-01451bf4-1071-4f5b-857f-e07dda7405e0.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 6](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-865048fe-c74c-4bad-82cf-8bd58627ea5e.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 7](https://yardfirm.com/wp-content/uploads/2025/10/product-fancy-ec03a753-828f-4cd8-8a3d-0841207f8a07.jpg)
![[EPA Compliant Gas Motor] EPA Compliant Aceup Energy 4.4HP 173cc 4-Stroke OHV Gas Motor | Vertical Shaft with Primer for Lawn Mower - Image 8](https://yardfirm.com/wp-content/uploads/2025/10/product-7850123496ee55e4fbe0213c34bdf215c44f8fb2.temu_.000001.jpeg)






go***s1 Verified Buyer
I got the motor in Monday but mounted it Tuesday. It had a light oil from handling on the inside box plus all over the filter area where the oil fill cap was loose. This was enough to effect anything that I could tell It didn’t come with mounting hardware except for the blade. I added the sheer pin assembly from the one I’m replacing. I also had to drill and additional mounting hole plus drill out the mounting bracket on the motor for proper placement. Once all that was done I added 30wt sae oil and gas. I put the assembled lawnmower on level ground pumped the primer bulb and with one pull she cranked up and ran real good. I finished cutting the grass and didnt have any problems. I think I got a good one that should last hopefully a long time. New mowers priced from 229.99 to 379.99 so I saved money and with a little work I have a new lawn mower. Also in the pictures I included the old motor for reference.
70***00 Verified Buyer
I really liked it, excellent workmanship, and it starts up right away.
ron davis Verified Buyer
Have not lnstalled yet looks very good very happy with engine!
steve zuspann Verified Buyer
Installed on push mower crank shaft is 7/8″. Started right up . Was on sale. fast shipping. Arrived in perfect condition.
Donna Tracy Verified Buyer
started with 1 pull
40***16 Verified Buyer
great engine
cl***ke Verified Buyer
The lawn mower engine came really fast. looks like good quality have not installed the engine to old frame. pleasantly surprised.
31***30 Verified Buyer
now I can cut my grass my self and keep my money good looking this a hook up thanks for sho