can the moter go on a uber scoot 2 speed 50cc

I don't know what that is but is it semiautomatic or a 2 speed auto belt drive setup like gokarts with torque converters? If it has a gearbox with shifter than it would have to be separate from the engine itself most motorcycle gearboxes are built in to the engine thus they're one complete unit so you cannot mate the gearbox to another engine. If the gearbox is its own unit and separate from the engine meaning not built in to the engine than it is possible to use this engine yes. Now if the gearing in your gearbox is too tall the engine will struggle. You can help the engine struggle less by changing to smaller front sprocket or a larger rear sprocket. This should cover your question and any others you might have. If not I will provide any info I can to help further.

What is the black wire coming outa the engine near the spark plug with the connector on it for?

It's for a ground or the kill switch. Can't remember.

Does this use a #40 chain?

Can't remember I gave up on the engine and put an electric motor on my bicycle . I gave the engine to my older son and said try making a chain saw out of it . lol

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49CC/50CC Bike Engine, 1.9kw/7000rpm 2-Stroke Engine&Transfer Motor W/Gear Box Air Filter & Pull Rope Start and Electronic Ignition System Mini Motorbike Engine for Mini Pocket Dirt Bike ATV/Scooter

Product ID: 153846318

Details

Brand
HASANEN
Fuel Type
Gasoline
Number of Items
1
UPC
760385686083
Unit Count
1 Count

🔥2-stroke high-efficiency engine

⚙️1.9kW max power @7000rpm

❄️Air cooling system prevents overheating

171513CFA

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Description

⚡ Unleash Mini Power, Max Thrill!

SMOOTH OPERATOR - Upgraded CVT gearbox and stable bearings optimize response and operational efficiency for a seamless ride.
COOL UNDER PRESSURE - Advanced air cooling system keeps your engine running cooler, longer—no more overheating fears.
ENGINEERED FOR ENDURANCE - Premium aluminum build ensures wear and corrosion resistance, ready for any terrain or challenge.
POWER THAT COMMANDS THE ROAD - 1.9kW peak power delivers smooth, unstoppable acceleration for your mini bike or ATV.
INSTANT IGNITION ZERO HASSLE - Electronic ignition system guarantees fast, reliable starts every time—get riding without delay.

This 49CC/50CC 2-stroke mini motorbike engine delivers 1.9kW at 7000rpm with an efficient air cooling system and electronic ignition for quick starts. Built from premium aluminum for durability and equipped with an upgraded CVT gearbox, it supports up to 396.8 lbs and reaches speeds up to 48 km/h, making it the perfect powerhouse for mini dirt bikes, ATVs, and scooters.

Specifications

ASIN	B07WXHZKLF
Best Sellers Rank	#904,710 in Automotive ( See Top 100 in Automotive ) #444 in Powersports Engine Kits
Brand	HASANEN
Brand Name	HASANEN
Customer Reviews	3.8 out of 5 stars 203 Reviews
Fuel Type	Gasoline
Included Components	1* Engine
Manufacturer Part Number	1
Model Number	YCZYQ-1758
Number of Items	1
UPC	760385686083
Unit Count	1 Count

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171513CFA

Duties & taxes included

In stock

Sold byAmazon SenegalDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Senegal.

Secure transaction

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TrustScore 4.5 | 7,300+ reviews

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