Fixing your scooter.
If you own a scooter and cannot get it to father, you know how absolutely frustrating this can be. If you find yourself in this standing 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 quandary. Over time, carbon and the unburned fuel and oil mixture build up and clog the exhaust pipe. Blockages in the exhaust pipe will adversely impact the performance of your scooter, or trigger 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 clogged or not. The sound may be a little loud - two strokes may vibrate like a chain saw. If the scooter runs now that the exhaust is detached, you know where the quandary 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 fade, leaving a sludgy, substance in the gas tank,petcock, fuel line and carb that is alike to molassas. Completely flush the gas tank and lines with new gas.
If the gas tank is not too corroded or grimy, it may be ok to easily 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 replenish 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 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 petrol flows. There should be sufficient flow. A dribble is not good enough. If you are able to get this flow, then you are alright. Flush the system by running a minimum of a pint of gas through it. If there is still no flow, it possibly means your petcock is clogged. You will need to take it out and take it to pieces to clean it. Return it with care on the gas tank or the gas might leak. fire up the scooter after repairing everything. The gas desires 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 essential. The carb, air cleaner, and exhaust system should all be inspected and adjusted to work together. If you change any of these items aimlessly or haphazardly, most scooters will not run properly.
Check all the connections again. After that, turn over the engine for 10-15 seconds. Is it activated? Do you hear any popping sounds, as though the engine is attempting to run? Do not request the throttle while cranking; many scooters do not start when you do this. In general, for Honda scooters if you utilize thethrottle just when the engine catches, they tend to start easier. near 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 fire up, stop about fifteen seconds and try again.
If the speedometer is not working, it's usually because the speedometer cable is busted. check it about 5-6 inches from its linkage at the front wheel. This is usually 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 exchange them easily.
Now inspect the center stand of your scooter. Getting it parked on this stand can be hard 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 method is followed.
Now you are equipped to ride and may long to know how to increase the top speed of your scooter. This question is asked most regularly about the 50cc scooters, but also can be asked about the larger scooters as well. The real queston that is of most importance is, how much money are you prepared to consume? If you own a 50cc, and you desire the top speed to go from 25 mph to 50 mph, you might want to consider simply oftrading up to a larger scooter. As you multiply the acceleration, you will discern that the brakes, suspension, and frame are not up to par. It is quite expensive to exchange all the parts. If you minimally want a little better speed, modifications to your 50cc scooter's carburetor, exhaust pipe, and the variator may result in improved performance. possibly you can get a big bore kit and this will raise 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 pipe or both. These two components (and possibly the air box) would need to be replaced together for optimal performance. chiefly, 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 shifting the air box, you are restricting the amount of added air. You also check the amount of air out of the engine if you fail to exchange the exhaust pipe with one that is also larger or freer flowing. Additionally, also shifting 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 tune your scooter to get the best performance. endeavor to obtain a kit that includes a carb, air box and an exhaust pipe that are all planned for your scooter. It will make things much less demanding. lastly, 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 additional tweaks to additionally expand your gas scooter. You can try to get another drive belt. This will give you a little advantage on the mph; new belts ride higher in the pulleys. You can also revise your roller weights (you can use heavier rollers for more top speed), adjust your valves, try a new air filter, and keep your tires inflated properly.
Next check your idle. Is it too high? This can be caused by a throttle cable that is too rigid or not routed properly. It could also show that you need to twist the idle screw on the carb the reverse direction ~1/4 turn. A vacuum leak may also be a cause for a high idle. The rubber manifold connecting the carb and the cylinder head may crack after a while. try 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 somewhere.
Finally, one last thing to consider is elevation. This may not ensue very frequently, but it's good to know well. Your scooter will have distress receiving enough air at heights above 4000 feet. You will need to place a lesser main jet in the carburetor. A good statute 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.
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