Index

Overview

Tuning

Tuning Overview

Lighter Roller Weights

Remove Variator Restrictor

Stiffer Clutch Springs

Move Needle Jet Washer

Increase Fuel Jet Size

Carb De-restriction

Un-Restricted CDI Unit

Un-Restricted Air Inlet

Trouble Shooting

Compression Test

Fuel Enricher Test

Seized Brake Caliper

General Maintenance

Replace Air Filter

Check & Change Oil

Spark Plug Change

Idle Speed Adjust

Change Brake Pads

Adjust Valve Lash

Electrical

Testing the Battery & Charging System

Battery Change

Coil Change

HT Lead Change

Transmission

Remove Starter Motor

Refurb Bendix Gear

Engine

Camshaft Removal

Valve Removal

Replace Valve Guides

Engine Removal



Return to Transport Listings

Models Covered

Lexmoto, Pulse, Sukida, Baotion, Lifan, Direct Bikes, Huatian, JMStar, QT50, LF50QT, YH50QT, BT49qt, 139 QMB, Honda, GY6, Motorbike, Taishan, Jonway, Peugeot V-Clic, QT-4, QT-7, QT-9, qt-11, QT-50 Kymco, Tank, Quinqzi, PGO, Roketa, Strada, Vento, Yamati, QMB139, SunL, SYM, QingQi, Volano Plus Many More Chinese Motorcycles, mopeds and scooters!



Scooter Oil

The oil that came with your imported Chinese 50cc scooter GY6 clone is likely to be of poor quality, and possibly too thick. 50cc scooters use standard engine oil, typically SAE 10w 30. Regular oil level checks and engine oil changes can improve performance and prolong the lifespan of you motorcyles engine.

Steps to Check the Oil Level and Change the Engine Oil

Applies to: Baotian, Sukida, Hoatian, Lifan, JMStar, Jinlun, Kymco, Tank, Quinqzi, PGO, Roketa, Strada and Taishan QingQi and many more...

Checking and changing your chinese 4 stroke scooters Oil

This is a relatively easy task that can be achieved using a simple wrench and a container to collect the old engine oil. In some cases you may find that your 4 stroke chinese scooters performance can be improved if the old engine oil was too thick or the oil filter screen was blocked.

Engine oil is very cheap in the quantities that are required for a 50cc 4 stroke import scooter, so it is worth changing the oil for a good quality branded oil.


  1. Check the engine oil level. Place the scooter upright on its center stand for a few minutes to ensure that all the oil has drained down into the bottom of the engine.
  2. Undo the oil filler cap/dipstick from the engine (this is usually on the side of the scooter just above the exhaust).

    Undo your chinese scooters dipstick to check the oil level
  3. To check the oil level on your scooter, wipe the dipstick clean, then dip it fully down into the oil filler hole. There is a CrissCross section on the dipstick. Fill with oil until the oil is near the maximum mark. NOTE: do not screw the dipstick in, just dip it in up to the threads.

    Checking the Engine Oil Level GY6 Chinese Scooter Clone
  4. If your changing the oil, undo the Oil Drain plug from the bottom of the engine using a wrench. Take care as oil will poor out quickly once the drain plug is removed.

    Undo the oil drain plug, chinese qmb139 scooter
  5. Drain the old engine oil from the engine by placing a container beneath the oil drain hole to catch the old engine oil. NOTE: There may be a spring and/or oil filter screen held in place by the oil drain plug. They will probably fall in the old engine oil as you remove the Oil Drain plug, retrieve them if necessary.

    Catch you 50cc motorcycles oil in a plastic container










Notes

Chinese 50cc 4 stroke scooters do not have much power, usually around 2 bhp! Changing the engine oil to a thinner specification can have a noticeable effect on performance without posing unnecessary danger to your scooters moving parts.

Most manufacturers specify SAE 10w 30 engine oil, although the factories that produce these cheap chinese import scooters are renowned for shipping these scooters with non branded ungraded oils! You may notice a further improvement in power if you go even thinner, say SAE 5w 20 semi synthetic.

I am currently running a 50cc scooter, cheap huatian QT derivative on 5w 20 as a test. After a couple of thousand miles I'll strip the engine and check for signs of wear!



All Rights Reserved