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Checking a used Gas Scooter

Posted: 05.01.2009 | Views: 226

Fixing your scooter.

If you own a scooter and cannot get it to run, you know how absolutely frustrating this can be. If you find you are in this position keep with us for effective tips and insight.

Check to see whether your exhaust pipe is blocked. Two stroke scooters are especially susceptible to this hindrance. 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 cause it to not run at all. It is not easy to say whether the exhaust pipe is congested. Removing it and starting the scooter is the easiest way to tell if it is bunged or not. The sound may be a little loud - two strokes may ring like a chain saw. If the scooter runs now that the exhaust is detached, you know where the hindrance lies.

Think back to when you drained the old gas. How old was it? Did the gasoline have an old smell? gasoline 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 disperse, imparting a sludgy, substance in the gas tank,petcock, fuel line and carb that is parallel to molassas. Completely flush the gas tank and lines with new gas.

If the gas tank is not too corroded 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 gasoline is, (even if it smells all right), drain the gas tank, carburetor float bowl, and fuel lines,and replenish with fresh gasoline. 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 existing gas. At last I had to drain out all the old gas and refill it up with new gas. After that, the scooter fired at once and ran well.

Take the fuel and vacuum tubes 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 observe how well the gasoline flows. There should be sufficient movement. A dribble is not good enough. If you are able to get this flow, 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 bunged. 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. start the scooter after repairing everything. The gas wants a few seconds of cranking to make its way from the gas tank to the carb. If you are fluky, it may start up right away.

If you still have problems at this juncture 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 necessary. The carb, air cleaner, and exhaust system should all be checked and adjusted to work together. If you change any of these items aimlessly or haphazardly, most scooters will not run right.

Check all the connections again. After that, turn over 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 apply the throttle while cranking; many scooters do not start when you do this. In general, for Honda scooters if you engage thethrottle just when the engine catches, they seem to fire-up easier. almost all Yamaha scooters have to idle up awhile before you can use the throttle. If it seems the scooter is catching, but still will not start, wait about fifteen seconds and try again.

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

Now inspect the center stand of your scooter. Getting it parked on this center stand can be difficult save if 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 equipped to ride and may want to know how to increase 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 consider basically oftrading up to a larger scooter. As you intensify the acceleration, you will note that the brakes, suspension, and frame are not up to par. It is fairly expensive to return all the parts. If you minimally want a little better speed, modifications to your 50cc scooter's carburetor, exhaust system, and the variator may result in augmented performance. perhaps you can get a big bore kit and this will elevate the engine displacement from 50cc to approximately 70cc.

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

You can also acquire a new performance carb, a new exhaust system or both. These two components (and maybe the air box) would need to be replaced together for optimal performance. basically, the engine is an air pump. You get more strength 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 altering the air box, you are restricting the amount of added air. You also impede the amount of air out of the engine if you neglect to return the exhaust system with one that is both larger or freer flowing. Additionally, simply altering 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 power, but may lead to starting problems or the performance might be good at low RPMs but horrible at higher ones. It can be hard work to modify your scooter to get the best performance. endeavor to acquire a kit that includes a carb, air box and an exhaust system that are all designed for your scooter. It will make things much less demanding. finally, use the big bore kit. This will intensify the torque and acceleration, but will not enhance 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 further perfect 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 vary your roller weights (you can use heavier rollers for more top speed), adjust your valves, install a new air filter, and keep your tires pumped right.

Next check your idle. Is it too high? This can be caused by a throttle cable that is too stiff or not routed right. It could also specify that you have to twist the idle screw on the carb the contrary direction ~1/4 turn. A vacuum leak may also be a grounds for a high idle. The rubber manifold connecting the carb and the cylinder head may break after a while. attempt to start 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 happen 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 slighter main jet in the carburetor. A good pronouncement to follow 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.

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