In this video, I bought a 2014 Tao Tao BWS 150 scooter with 13,215 Km (8211 miles) and had to fix everything.

Torque specifications:
Clutch nut: 36 ft-lb or 49 Nm
Variator nut: 36 ft-lb or 49 Nm
Transmission belt cover bolts: 7.3 ft-lb or 10 Nm
Exhaust studs to head (8mm size): 7.3 ft-lb or 10 Nm
Exhaust bracket to engine bolts: 18 ft-lb or 24 Nm
Rear wheel nut: 80 ft-lb or 108 Nm
Spark plug gap: 0.025" or 0.65mm
Spark plug torque: 10ft-lb or 14 Nm
Valve to rocker clearance intake: 0.004" or 0.102mm
Valve to rocker clearance exhaust: 0.005" or 0.127mm
Valve cover bolts: 8 ft-lb or 11 Nm
Exhaust nut torque (6mm studs): 8 ft-lb or 11 Nm
Exhaust nut torque (8mm studs): 12 ft-lb or 16 Nm
Muffler clamp bolts: 30 ft-lb or 40 Nm
Brake lever banjo bolt: 19 ft-lb or 26 Nm
Engine mounting bolt: 36 ft-lb or 49 Nm
Shock bolt to frame: 22 ft-lb or 30 Nm

Parts:
Battery: YTX7A-BS
https://amzn.to/3J5IkjA
Variator kit
https://www.partsforscooters.com/164-...
Belt size: 835 20 30
https://www.partsforscooters.com/106-...
Exhaust studs 6mm (stock) or 8mm
https://www.partsforscooters.com/190-...
Metal exhaust gasket
https://www.partsforscooters.com/190-...
Tire size: 130/90 - 10
https://www.partsforscooters.com/154-...
https://amzn.to/3ZM14uq
Bent tire valves
https://www.partsforscooters.com/153-...
Straight tire valves
https://amzn.to/3iTVjKL
Spark plug NGK CR7HSA
https://www.partsforscooters.com/Spar...
Valve cover gasket
https://www.partsforscooters.com/164-24
PAIR block off plate
https://www.partsforscooters.com/164-...
Fan shroud set
https://www.partsforscooters.com/164-...
Fan cover gasket
https://www.partsforscooters.com/151-...
Brown seat cover vinyl
https://amzn.to/3Hn32dv
Stapler
https://amzn.to/3QVeCzP
Staples T50 - 3/8" - 10mm
https://amzn.to/3j07hlZ
Throttle cable 80"
https://www.partsforscooters.com/100-...
Brake light switch
https://www.partsforscooters.com/100-...
W5W - 194 - 168 LED bulbs
https://amzn.to/3kuc5QZ
BA20D LED headlight bulbs
https://amzn.to/3kt5lTj
Fuel petcock
https://www.partsforscooters.com/164-...

Tools:
Rolling wrench CVT holder
https://www.rollingwrenchdenver.com/c...
Flywheel puller tool
https://www.rollingwrenchdenver.com/c...
8mm x 1.5 tap
https://amzn.to/3Hlpq7e
Tire valve tool
https://amzn.to/3GZAJRd
Feeler gauge set
https://amzn.to/3HopS4H

0:00 intro
0:55 inspection
4:35 replacing the battery
4:55 does it start?
5:45 charging system test
6:22 remove body plastic
7:01 identifying emissions components
9:10 remove the air box
9:57 inspect the CVT
11:01 remove the variator
13:15 remove the kickstart
14:14 inspect the clutch
15:43 measure the drive belt
16:39 install the clutch
17:17 replace the variator and rollers
18:42 install the new drive belt
20:04 how the CVT works
21:02 installing the CVT cover
22:03 remove the carburetor
22:34 remove the gas tank
23:01 identify fuel hoses
23:34 remove the exhaust
24:10 remove the engine
24:54 repair cylinder head threads
27:08 install new exhaust studs
28:03 remove rear wheel
28:26 inspect rear brake
29:07 replace rear tire
33:39 install rear wheel
34:52 check the spark plug
35:49 adjust the valves
37:51 delete the PAIR emissions system
40:00 install the valve cover
40:43 install cooling fan shroud
42:10 install muffler and exhaust pipe
43:22 re-upholster seat cover fabric
45:39 remove front plastic fairings
47:00 replace throttle cable
48:51 fix brake switch
50:07 bleed front brake
51:59 different types of DOT brake fluid
52:45 replacing headlight bulbs
54:52 polish the speedometer plastic
55:25 rage kick the scooter
56:24 make battery box brackets
57:25 install the engine
58:06 adjust rear brake cable
58:30 test the gas tank and fuel petcock
59:19 install the gas tank
59:37 clean the carburetor
1:02:28 assemble the carburetor
1:04:55 install the carburetor
1:05:57 connect engine wiring
1:07:05 install air box
1:07:51 replace all rubber hoses
1:10:08 engine oil change
1:11:10 transmission gear oil change
1:12:21 install battery and start engine
1:13:25 assemble body plastic
1:14:33 scooter broke down and left me stranded
1:16:39 diagnosing no start
1:17:15 remove the stator / magneto
1:18:47 charging system wiring diagram
1:20:23 testing the stator
1:23:17 install the new stator
1:23:52 testing the CDI
1:24:46 charging system test
1:25:33 LED headlight upgrade
1:26:54 rewiring the headlights for DC
1:28:20 saving electricity
1:29:27 fix the brake light socket
1:30:33 final test ride
1:32:13 replacing the mirrors
1:33:15 old parts
1:33:33 parts and labor price estimate
1:35:46 does a Chinese scooter save you money
1:36:54 conclusion