Checking A Second Hand Gas Scooter

By Author: Tiger Motion, Inc. DBA Neo Scooters
Total Articles: 3764
Comment this article

Fixing your scooter.

If you own a scooter and cannot get it to start-up, you know how absolutely frustrating this can be. If you find you are in this status keep with us for valuable tips and insight.

Check to see whether your exhaust pipe is blocked. Two stroke scooters are especially susceptible to this problem. Over time, carbon and the unburned fuel and oil mixture build up and clog the exhaust pipe. Blockages in the exhaust pipe will adversely affect the performance of your scooter, or trigger it to not run at all. It is not simple to say whether the exhaust pipe is congested. Removing it and starting the scooter is the easiest way to tell if it is closed or not. The sound may be a little loud - two strokes may resonate like a chain saw. If the scooter runs now that the exhaust is off, you know where the problem lies.

Think back to when you drained the old gas. How old was it? Did the petrol have an old smell? petrol in a scooter left idle for a year or so will transform into a varnish-like substance. Then you have a lot of cleaning to do. The gas will mostly vanish, imparting a sludgy, substance ...
... in the gas tank,petcock, fuel line and carb that is similar to molassas. Completely flush the gas tank and lines with new gas.

If the gas tank is not too rotten or dirty, it may be ok to cleanly flush it out. Now put in some new gas. However, if you aren't sure how old the petrol is, (even if it smells all right), drain the gas reservoir, carburetor float bowl, and fuel lines,and refill with fresh petrol. Some time ago I worked on an Hond 50 with quite clean-smelling gas. I could make it go with starting fluid, but I couldn't do it with original gas. At last I had to drain out all the old gas and top it up with new gas. After that, the scooter fired at once and ran well.

Take the fuel and vacuum lines from the petcock to the carb. Put an appropriate receptacle beneath the fuel line, and draw air on the vacuum line to the petcock, (if equipped with one), and follow how well the petrol flows. There should be sufficient movement. A trickle is not good enough. If you are able to get this surge, then you are alright. Flush the system by operating a minimum of a pint of gas through it. If there is still no flow, it maybe means your petcock is closed. You will need to take it out and take it to pieces to clean it. Return it with attention on the gas tank or the gas might leak. fire up the scooter after repairing everything. The gas needs a few seconds of cranking to make its way from the gas tank to the carb. If you are timely, it may start up right away.

If you still have problems at this point try the following. install a new spark plug, particularly if it is a two stroke engine. The air filter should be cleaned or replaced when essential. The carb, air cleaner, and exhaust system should all be inspected and adjusted to work together. If you change any of these things aimlessly or haphazardly, most scooters will not run suitably.

Check all the connections again. After that, crank the engine for 10-15 seconds. Is it activated? Do you witness any popping sounds, as though the engine is attempting to run? Do not direct the gas while cranking; many scooters do not start when you do this. In general, for Honda scooters if you utilize thegas just when the engine catches, they tend to start easier. near all Yamaha scooters have to idle up awhile before you can use the gas. If it seems the scooter is catching, but still will not fire up, stay about fifteen seconds and try again.

If the speedometer is not working, it's typically because the speedometer cable is jammed. check it about 5-6 inches from its linkage at the front wheel. This is typically where it breaks because of the twist in the cable and being vulnerable to the elements such as water and dirt close to the front wheel. New speedometer cables are inexpensive (generally under $20) and you can swap them easily.

Now inspect the center stand of your scooter. Getting it parked on this stand can be difficult unless you practice. It's all in the system. Even the center stand of a large motorcycle can be deployed by a small person if proper formula is followed.

Now you are prepared to ride and may want to know how to raise the top speed of your scooter. This question is asked most often about the 50cc scooters, but also can be asked about the larger scooters as well. The question that is of most importance is, how much money are you disposed to consume? If you own a 50cc, and you desire the top speed to jump from 25 mph to 50 mph, you might want to think basically ofbuying a bigger scooter. As you multiply the acceleration, you will find that the brakes, suspension, and frame are not up to par. It is totally expensive to swap all the parts. If you merely want a little better speed, modifications to your 50cc scooter's carburetor, exhaust pipe, and the variator may result in better performance. possibly you can get a big bore kit and this will lift the engine displacement from 50cc to approximately 70cc.

Generally, adding a performance clutch or performance variator is the easiest thing to do. They may provide you with better acceleration and/or elevated speed.

You can also attain a new performance carb, a new exhaust pipe or both. These two components (and maybe the air box) would need to be replaced together for optimal performance. mainly, the engine is an air pump. You get more power when you move more air through the engine. By adding a larger carburetor, you will draw more air and more fuel into the engine. By not varying the air box, you are restricting the quantity of added air. You also impede the quantity of air out of the engine if you fail to swap the exhaust pipe with one that is both bigger or freer flowing. Additionally, also varying the carburetor changes the fuel to air ratio inside the engine. The changes that you make may or may not be liked by your engine. For example, the new carb should give you more top end , but may lead to starting problems or the performance might be good at low RPMs but modest at faster ones. It can be hard work to modify your scooter to get the best performance. endeavor to purchase a kit that includes a carb, air box and an exhaust pipe that are all intended for your scooter. It will make things much less difficult. finally, use the big bore kit. This will multiply the torque and acceleration, but will not increase the top speed unless gearing modifications are made. There aren't very many performance parts for large scooters readily available in the United States (except for certain new scooters).

Still want more performance? You can try some of the following tweaks to additionally expand your gas scooter. You can try to get another drive belt. This will give you a little lead on the mph; new belts track higher in the pulleys. You can also revise your roller weights (you can use heavier rollers for more top speed), adjust your valves, install a new air filter, and keep your tires inflated suitably.

Next test your idle. Is it too high? This can be caused by a throttle cable that is too firm or not routed suitably. It could also designate that you have to twist the idle screw on the carb the reverse direction ~1/4 turn. A vacuum leak may also be a for a high idle. The rubber manifold connecting the carb and the cylinder head may crack after a while. attempt to fire up the engine and spray some water around the carb, manifold and vacuum hoses. If there is a reduction in the idle, it means that there is a vacuum leak someplace.

Finally, one last thing to think about is elevation. This may not transpire very frequently, but it's good to know anyway. Your scooter will have trouble receiving enough air at heights above 4000 feet. You will have to place a smaller main jet in the carburetor. A good rule to track is to decrease the size of the main jet by about 10 percent, and then see if that helps performance.

Hopefully these tips will help you enjoy your scooter for years to come. Don't give up, contact us if you have further questions.