1. I'm having trouble starting my gas powered scooter. What is the best way to start it?
    
2. On my gas powered scooter when I'm riding it a lot of the time the chain just falls off and I feel that is very dangerous. Can I fix it?
    
3. How do I adjust my carburetor?
    
4. What's the purpose of the small plastic tube that says 40ml on it that comes with the gas powered scooter?
    
5. How do I mix the gas and oil? How much oil do I put in it?
    
6. What kind of maintenance should I perform on my scooter?
    
7. What are the two tubes coming from the gas tank to the carburetor?
    
8. What kind of gas should I put in my gas powered scooter?
    
9. Does the gas powered scooter require any lubrication of the transmission?
    
10. I filled gas, pressed the bulb. Then I keep the thing off and pull start and it does not start. What is wrong?
     
11. When pull to start engine, it pulls out but engine does not turn over. Two or three tries and it engage and engine turns over or starts.
     
12. What do I do if the scooter will not be used for a period of time?

It is important to follow these steps to start the scooter, especially for the first time. Also, the first two or three times you start the scooter, it may take 10-20 pulls on the pull start to get it going.

It is strongly recommended to follow all the instructions about the break-in period to promote engine reliability and long engine life.

Fill the tank with the proper fuel mixture. DO NOT use straight GAS! You must use a premium 2-cycle oil mixed with the unleaded gas. The ratio of gas to oil is 32:1 for the Razorbacks and all other scooters. The ratio of gas to oil is 25:1 for the Pocket Bikes and after a five full tanks of gas, use a ratio of 50:1 (pocket bikes only!!). During the break-in period do not run the engine at maximum RPM and do not allow the engine to overheat.
Check your scooter for loose bolts and nuts before attempting to ride it each day. The vibration from the motor can cause loose bolts and nuts.
Press the bulb located on the bottom of the carburetor (right behind the air filter) until you see fuel flow back to the tank through the clear line and all bubbles are gone.
Apply choke in "UP" position.
Pull the pull start to get the engine going. DO NOT pull with excessive force or you will break the pull start. If this is your first or second time starting the scooter, it may take 10-20 pulls to start it. This will get much easier after the scooter is broken in. Use quick short pulls.
Once the engine starts let it warm up for a few minutes and then open the choke (lever in "Down" position).
Give the engine a little throttle right after it starts to get it going. You may also have to give it a little bit of throttle while pulling the pull start, although this often is not necessary.

After starting your scooter, let it idle for a minute so it can warm up before riding.

And now you're good to go! Once your scooter gets broken in, it won't be necessary to turn the choke on to start the scooter, and it won't take so many pulls to get it started. It does help to pump the bulb under the carburetor every time just to get the fuel flowing through it, since it dries up when it sits.

If it still won't start, you may need to adjust your carburetor.

1. If it happened when you were accelerating it usually happens because the front and rear sprocket are misaligned. To fix it you need to remove the engine from the engine mount, then adjust the engine mount (it can slide once you loosen the bolts) to get the sprockets in better alignment. This can be done by loosening the three bolts on the bottom of the engine. The idea is to get the front and rear sprockets aligned in a straight line.
2. Otherwise you might need to tighten the chain, but usually the problem is #1.

Sometimes the carburetors aren't quite adjusted correctly from the factory. It's easy to adjust them. Follow these steps:

Remove the air filter cover. This is the black box located on the left side of the scooter, towards the front of the engine. There is a screw right in the middle to unscrew. You should now be able to see the air filter and behind it the carburetor. There are two screws on the carburetor which you can adjust, the air screw and the idle screw (see picture to right for guide). Usually the idle screw doesn't need any adjustment. If it does, it doesn't require much movement (half a turn or so). What usually needs adjustment is the air screw. We've found screwing it all the way in, and then out 3 1/2 turns is usually the right setting. You should try putting the scooter up on a brick or chair, and then giving it throttle after you adjust it. It's adjusted optimally when the engine is making the highest pitched noise.

40ml is how much two-stroke oil you need to mix with 1 liter of gas. Please check your scooter's fuel tank size. This might be how much oil you need for a full tank. It is usually easier to get a gas tank that holds a gallon or two and dedicate that to your two-stroke engine. Then you'll always have gas/oil mixed and ready.

Most of our scooters ship with a 1 liter tank, which means it's just 40ml (one canister) of 2-stroke oil per tank of gas. Regardless of your tank size, these instructions will work:

You fill a gas tank with one or two gallons and leave a little room for oil, then dump in the right amount of oil and slosh it around to mix it. Some oils don't require as much as others for proper lubrication. Follow what the oil bottle directions instruct for mixing. Here is the basic mixing formula for a gallon.

There is one maintenance check which is very important. Make sure all of the bolts are tightened before you go out riding. These scooters vibrate quite a bit, which causes the bolts to come loose. Specifically, check the front axel bots, the engine mounts (located right beneath the engine), the gas tank screws, the front fender screw (if your scooter has a front fender), and the deck screws. Also make sure the handlebar folding mechanism is good and tight. You should also oil the chain once in a while (not very often). 3-in-1 oil works great for that.

There are two tubes. One from the tank to the carburetor and one going the other way. The clear tube is the fuel return, the black tube is the fuel supply. The black one goes on the curved nipple and the clear goes on the straight one.

25 to 1 gas oil mix, or 40 to 1 gas oil mix, depending on your model scooter (some scooters require a 40:1 ratio). Doesn't matter what kind of unleaded gas but make sure you use two-stroke oil. A synthetic oil is best and recommended by us.

The 90 weight gear oil in the transmission should not need changing for the life of the gas powered scooter.

Please be sure that the two tubes from gas tank installed to the right nipples under the engine. The right order is that the black one goes on the curved nipple and the clear goes on the straight. If it still does not start, pump the primer bulb 10 times and put the choke in the up position and give it 5-7 quick short pulls. It should start, if not, give little throttle while pulling rope.

There is a problem with starter pawl. If your scooter is still under the warranty, contact the distributor for the replacement parts.

Should your scooter not be used for a period of time, take care and make measure as follows:

• Remove gas from the fuel tank or run empty
• Store the scooter on a smooth and dry place
• Protect from dust
• Remove the spark plug, clean it, put some drops of fuel with oil into the cylinder, pull 2-3 times the starter rope to distribute oil drops and then screw in the spark plug.