scooter

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1. Maximum speed was 40 km/h (25 mph). The rear wheel was driven directly by rods from the pistons in a manner similar to the drive wheels of steam locomotives. Only a few hundred such bikes were built. and the high price and technical difficulties made the venture a financial failure for both Wolfm

   Comment by Wayne — 05/12/2010 @ 3:15 pm

2. If the scooter doesn t turn over when you ve done all the required operations. there s an electrical problem with the battery. Make sure the battery is charged. If it is. make sure the fuse hasn t blown. If it hasn t. check to see if you are getting voltage to the starter motor terminals. If you are. the starter motor is likely defective. Many scooters have a kick start (see your manual). If the battery is OK and the starter motor doesn t work. try kick starting it. It s usually not too hard. My scooter usually starts OK on the 2nd or 3rd kick.

   Comment by Austin — 05/12/2010 @ 3:15 pm

3. What the carburetor does is regulate the amount of fuel and air which are supplied to the engine. To go faster you need more fuel and more air and they must be in the right proportion. The fuel also has to be atomized as much as possible (i.e. be supplied in tiny droplets). The carburetor controls all these functions and generally does it quite well. Without removing and disassembling the carburetor, there are only two adjustments you can make, but these should take care of most minor problems. The first is the adjustment of the idle speed.

   Above is a picture of a typical GY6 engine carburetor and the view is that from the right side of most engine configurations on 150cc Chinese scooters. There’s a small spring loaded screw which adjusts the idle speed. It’s right next to the throttle control which is connected to the twist grip on the right handlebar. On most 150cc scooters, idle speed should be around 1500rpm when the engine is fully warmed up. Don’t make adjustments when the engine is cold. Take a 5 or 10 minute ride first. When the engine is cold the automatic choke is in operation and that can change the idle speed. If you have a tachometer, setting the speed is easy. If you don’t, you want to set the speed to a low idle. Fast enough so that the engine doesn’t stumble or stall, but slow enough that the clutch doesn’t engage and try to move the scooter forward. On most scooters from 50cc to 250cc, this will be somewhere in the 1500-2000rpm region.

   The other adjustment you can make is to the low speed fuel/air (“mixture”) ratio. This is done on most scooters using a screw adjustment on the other side of the carburetor as shown below.

   This screw changes the air to fuel ratio at low speeds. It shouldn’t need much adjustment, but the way to do it is to turn the screw very slightly (1/8th turn) and see if the idle speed goes up or down. If it goes down, turn the screw back 1/8th turn to where it started, then 1/8 turn in the other direction and see if the idle speed goes up or down. If it goes down, turn it back to where you started since you didn’t need any adjustment! If the idle speed goes up, continue turning the screw in 1/8th turn steps until the idle speed is at a maximum. If it starts to go down, turn it back to get the maximum idle speed.

   You may need to go back to the idle speed screw to lower the idle speed if it’s now too fast. So the basic procedure is to set the fuel/air mixture to give you the fastest idle, then use the idle speed adjustment to set the speed to the lowest rpm that gives you smooth running.

   If the scooter idles well and runs fine at low speed, but has problems at high speed, the problem may lie inside the carburetor with the main jet. The fuel/air ratio at higher speeds is set by the jets inside the carburetor and to get at them the carburetor has to be removed and disassembled. This can be a tricky job as the parts are small and delicate. The good news is that these carburetors are quite cheap. You can get a new one for $60-$80, so if you can’t make your scooter run smoothly and you don’t like the idea of taking the carburetor apart, you can always replace it!

   Scooter Registration?

   If you’ve bough a fully assembled and tested scooter from a local dealer than they should take care of all the required registration. All you have to do is pay the dealer and your fully registered and inspected scooter should be delivered to you.

   However if you’ve bought a scooter through our website you’ll have some work to do. In most of the states you’ll need a manufacturer’s statement of origin (MSO), which the dealer should provide. This is a certificate from the scooter manufacturer which has the make, model and VIN (Vehicle Identification Number) on it and is proof that the scooter meets all applicable DOT and EPA standards for registration in the USA, and in particular for the state you are trying to register it in. You also need proof of insurance, the dealer invoice and a valid driver’s license. Then you simply drive to your local DMV office, wait in line for 20 minutes, get the forms, fill them out, wait in line for another 30 minutes and if all your documents are in order you get a title and your motorcycle plates (moped plates if your scooter is under 50cc).

   Comment by master — 05/12/2010 @ 3:15 pm

4. So you buy a scooter and something breaks. Who is going to fix it? Well, if you’ve bough in person from our retail store in California,? we have access to parts, shop manuals and we will have mechanics trained to fix your scooter. All you have to do is bring them in.

   But what if you are located outside of California, we have a few suggestions for you. You can try contacting local motorcycle (or better still, scooter) repair shops. If they are not very enthusiastic about working on a Chinese scooter, no worry! Have them contact our tech support department directly. We will make sure they will have the easy access to our spare parts and the technical support they need. Remember, we are the only company who actually carries all common parts in stock.

   150cc engine and transmission as used in many Chinese scooters

   You might also get some help from a lawn mower repair shop. They are used to working on small engines and the engine in a scooter isn’t all that different from the engine in a lawn mower. You can also try snowmobile and ATV repair shops.

   CVT (transmission) belt. Price ~ $40. Belt life anywhere from 2500 to 10,000 miles

   It’s not a bad idea to keep a few spares (such as a spare spark plug and CVT belt) on hand, just in case you need them (and eventually, you will). It’s a good idea to remove the CVT cover on your new scooter and read the number on the belt BEFORE you need to change it. Belt sizes vary, even on the same nominal scooter “model” and by the time it fails, the size markings may have worn off! The belt size is usually three numbers such as “835-20-30″. This would mean the belt is 835mm long, 20mm wide and has a cross section with a 30?? bevel angle.

   The best way to avoid needing repairs is regular maintenance, which means changing the oil regularly, changing the fuel filter and spark plug at the proper intervals, checking the CVT belt and air filter, checking the tires and going around the scooter at least once a month and making sure that all the bolts are tight (especially the bolts holding the muffler on). Use the recommended grade of gas (usually higher than 90 octane for most Chinese scooters) and add fuel stabilizer if the scooter isn’t going to be driven for a while.

   Though you won’t find individual repair manuals for every different Chinese scooter, they are all pretty similar and many use the same engines and transmission parts.. There are a couple of books which may help. The Haynes guide is probably the best general reference for the repair of “generic” (i.e. Chinese) scooters. The “Complete Idiot’s Guide to Motor Scooters” is pretty basic and really doesn’t give much detailed information, though it’s not a bad introduction to scooters if you really know nothing at all about them.

   Comment by master — 05/12/2010 @ 3:15 pm

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