you can try the following steps to obtain the owner's manual for your TGB F409 150cc:
Visit the official website of TGB or the manufacturer of the scooter. Look for a "Support," "Downloads," or "Owner's Manuals" section on their website. Manufacturers often provide downloadable owner's manuals for their vehicles on their official websites.
Search for online scooter forums or communities that specialize in TGB scooters. Other TGB F409 owners may have shared or be able to guide you to a downloadable version of the owner's manual.
Contact TGB directly or reach out to their customer support. They may be able to provide you with a digital copy of the owner's manual or guide you to the right resources.
Remember, it's essential to ensure that you download the owner's manual from a reliable and trustworthy source to obtain accurate and up-to-date information about your TGB F409 150cc scooter.
Normally screw in GENTLY until the screw stops and then back 1 1/2 turns. Generic videos. Why are you fiddling with the carb. The Chinese set it up and they don't need adjustment unless something is wrong. When they do it is cleaning the carburetor of debris that block jets.
The valve clearance for a TGB F409 150cc engine should be checked and adjusted as needed, as part of routine maintenance. The proper valve clearance specification for this engine is as follows:
Intake Valve: 0.15 mm ± 0.05 mm Exhaust Valve: 0.20 mm ± 0.05 mm
Note that the valve clearance should be checked and adjusted when the engine is cold. The procedure for adjusting the valve clearance may vary, so I would recommend consulting your scooter's owner manual or a certified mechanic for specific instructions.
This is all I could find hope it helps.
TGB R125X Specs
The TGB R125X model is a Scooter bike manufactured by TGB . In this version sold from year 2008 , the dry weight is 118.0 kg (260.1 pounds) and it is equiped with a Single cylinder, four-stroke motor. The engine produces a maximum peak output power of and a maximum torque of . With this drive-train, the TGB R125X is capable of reaching a maximum top speed of . Regarding the chassis characteristics, responsible for road holding, handling behaviour and ride confort, the TGB R125X have a frame with front suspension being and in the rear suspension it is equiped with . Stock tire sizes are 130/60-13 on the front, and 130/60-13 on the rear. As for stopping power, the TGB R125X braking system includes Single disc size at the front and Single disc size at the rear.
TGB R125X General Information
Brand
TGB
Model
TGB R125X
Year
Year
Category
Scooter
Factory Warranty (Years / miles)
TGB R125X Dimensions, Aerodynamics and weight
Frame type
Seat details
Wheelbase
Length
1,896 mm (74.6 inches)
Width
670 mm (26.4 inches)
Height
1,125 mm (44.3 inches)
Seat Height
Alternate Seat Height
Ground Clearance
Trail size
Wheels details
Front Tyres - Rims dimensions
Rear Tyres - Rims dimensions
Front brakes
Single disc
Rear brakes
Single disc
Front Brakes Dimensions - Disc Dimensions
Rear Brakes Dimensions - Disc Dimensions
Curb Weight (including fluids)
Dry Weight
118.0 kg (260.1 pounds)
Front Percentage of Weight
Rear Percentage of Weight
Weight-Power Output Ratio :
Fuel Tank Capacity
6.80 litres (1.80 gallons)
Reserve Fuel Capacity
Carrying Details and Capacity
Front Suspension
Front Suspension Travel
Rear Suspension
Rear Suspension Travel
TGB R125X Engine and Transmission Technical Data
Engine type - Number of cylinders
Single cylinder, four-stroke
Engine details
Fuel system
Engine size - Displacement - Engine capacity
124.00 ccm (7.57 cubic inches)
Bore x Stroke
52.4 x 57.2 mm (2.1 x 2.3 inches)
Compression Ratio
Number of valves per cylinder
Camshaft Valvetrain Configuration
Maximum power - Output - Horsepower
Maximum torque
Engine Maximum RPM
Cooling system
Air
Lubrication system
Engine oil capacity
Exhaust system
Gearbox
Automatic
Transmission type, final drive ratio
Belt
Clutch type
Driveline
TGB R125X Performance
Top Speed
Acceleration 0 to 100 km/h (0 to 62 mph)
Acceleration 0 to 400m (1/4 mile)
Recuperation 60 to 140 km/h in highest gear
Fuel Consumption - MPG - Economy - Efficiency
CO2 emissions
Emissions
TGB R125X Electrical Systems, Ignition and Equipment
Ignition Type
C.D.I.
Electrical Details
Starter Type
Instruments
Lights
Scroll crankshaft to come piston to the highest position then releasing camchain thensioner, then rotate the camshaft position in the gear has three holes - two small should be aligned with the level of the head and a large remaining exactly at Above point.Good Luck!
Would suggest to replace the plug cap for a decent one. Not a guaranteed fix but I have seen this before as poor quality/faulty caps can arc even through the rubber.
Hope this helps you.