The must read guide for moped owners
Contents
1. My Scooter Has Problem When Running at High Speed Back to Top e Ifthe 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 Maintenance Back to Top Scooter maintenance is pretty important It s even more important than on a car because the engine has to work harder and component failure can more easily lead to loss of control Perhaps the most important and easiest item of maintenance is to regularly check the oil level and change the oil at frequent intervals We suggest changing the oil at least every 1000 miles is a good idea The oil capacity is less than 1 liter and so an oil change costs about 3 and takes about 5 minutes It s cheap insurance to keep your engine running for as long as possible Most of the manual recommends changing the transmission oil every 2000 miles or 6 months Since it only takes about 100ml of oil which costs under 1 and takes a couple of minutes to do don t skimp on transmission oil changes We2. 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 30ja bevel angle The best way to avoid needing repairs is regular maintenance which
3. 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 Troubleshooting Back to Top My Scooter Won t Start Back to Top To start a scooter needs three things e Gas e A spark e Cylinder compression If your scooter won t start it due to one of the above not being present Before you start troubleshooting make sure there is gas in the tank by actually looking into it Don t just trust the gas gauge Most scooters have four things that need to be done before they can be started with the electric starter e The ignition h
4. recommend using Castrol 10 30W engine oil and Castrol 80 90 transmission gear oil Which oil you use is less important than how often you change it though you probably should avoid using pure synthetic oil in a scooter especially during the break in period Once you have several thousand miles on the engine a synthetic blend may be OK but you should still change the oil regularly Checking tire pressure regularly is also very important Unlike a car a scooter only has two wheels and tire problems can lead more easily to a loss of control and possible injury so making sure your tire pressures are correct makes sense Though a standard maintenance schedule calls for checking bolt tightness every 1000 miles or 6 months it certainly doesn t hurt to do it more frequently Every 250 miles or every month e Check engine oil level e Check tire pressure e Check lights and horn e Check battery level Every 1000 miles or every 6 months Change engine oil Check tires for wear Check valve stems for splits or cracks Check brakes and throttle operation Lubricate cables if required Check all screws nuts and bolts and tighten Especially check muffler and exhaust fasteners and front and rear axles Every 2000 miles or every year Change the transmission oil Check and adjust valve clearance Clean air cleaner Check and clean or replace spark plug Check brake linings Check clean lubricate brake and throttle cables Check CVT drive be
5. 0 1000 miles Then you can switch to a synthetic blend if you want to Amsoil make a synthetic oil which they claim is specially designed for scooters Our break in technique is to gradually increase speed over the next 300 miles 201 500 and at 500 miles do another oil change After break in the engine oil should be changed at least every 1000 miles as part of normal routine maintenance Scooter Oil Change Back to Top What we are going to describe is how to change the engine and transmission oil in a 150cc Chinese scooter with a 4 stroke engine The procedure should be pretty similar on 50cc and 250cc models with 4 stroke engines 2 stroke engines mix gas and oil and so have no engine oil to be changed We d recommend changing the engine oil at least every 1000 miles and the transmission oil at least every 2000 miles Regular oil changes are the easiest and cheapest way to maximize the life of your engine Scooters take so little oil that it should cost less than 5 to do and once you know how to do it it should take you more than 10 15 minutes It s time and money well spent The first thing to do is to warm up the engine Run it for a few minutes so that the oil is warm That way it will flow easier If you run it until the engine is hot or you change the oil after you come back from a trip that s OK but you run the risk of burning yourself on the exhaust or with the hot oil Be careful Find some level ground and put the scooter on it
6. 0 expect to pay around 4600 or 5400 for a Honda Helix If you go to larger scooters like the Honda Siver Wing 580cc you ll pay 8100 8600 with true APS braking The 400cc Yamaha Majesty sells for around 6100 and the Suzuki Bergman 650 will cost you 9000 How fast do Scooters go Small 50cc scooters Mopeds are good for about 30 mph maybe 35 mph in some states without speed restrictions They will just about keep up with urban traffic but you have to ride them WOT Wide Open Throttle do to that This can be good for novices and young riders because in most of states the rider does not need a motorcycle license to operate a 50cc less scooter but the inability to keep up with faster traffic can sometimes be a hazard as cars try to squeeze past you when there really isn t room 150cc Chinese scooter It might look fast but it s not really very happy above 60 mph Mid sized 150cc scooters are good for 55 65 mph though with a long enough run at it they may get up to 65 mph especially if there s a tail wind or slight downhill grade 45 50mph is enough to keep up with most urban and suburban traffic though it s really not enough to flow with the traffic on a freeway where speeds of 65 75mph are more normal We d certainly recommend a 150cc scooter over a 50cc scooter for commuting unless you live in Manhattan Most of the 150cc scooters cruise quite comfortably at 45 50mph If you want a high speed machine you would probably be better o
7. Make sure there is gas in the tank first If there is you need to check the fuel valve Most scooters use a gravity fuel feed by locating the fuel tank higher than the carburetor The fuel usually then flows through filter and then through a vacuum operated valve The valve has three hoses connected to it One if from the fuel tank and is for the gas going in one is connected to the carburetor and is for the gas coming out and one goes to the engine manifold which provides a vacuum If you disconnect the hose from the carburetor fuel should run out when you crank the engine be careful to catch the gas if you do this and don t do it with a hot engine If you don t see gas the fuel valve may be faulty You can try applying a vacuum to the control port of the valve and see if the fuel flows Sucking on the line is one way to do this but make sure it s the vacuum line not the gas line if you try this If you are getting a spark and you are getting gas to the carburetor and the engine is turning over on the starter OK it s possible that the electrically operated automatic choke has failed It s supposed to operate when the engine is cold but if it s stuck or burned out the mixture will be weak and the scooter probably won t start The automatic choke is usually a black cylindrical object attached to the carburetor with a couple of wires coming out of it as shown on the left It s the only electrical powered component attached to the carburetor so i
8. Videos for reference Cleaning a carb http www youtube com watch v 0sMUAFbtAa4 Adjusting carb http www youtube com watch v CSj1wOMqkKo What is a Scooter Back to Top Well here s what Wikipedia has to say A scooter is a style of two wheeled motor vehicle traditionally defined by characteristics such as a step through frame wheels less than 16 in diameter and an engine located below the rider and to the rear That pretty much sums it up Motorcycles have an engine mounted in the middle of the frame with a gas tank above it The rider sits astride the engine with the gas tank right in front of them Motorcycle wheels are also typically larger over 16 diameter than those on a scooter Another major difference is that the engine of a motorcycle is attached to the frame while on a scooter it is usually part of the rear suspension So when a motorcycle rear wheel goes up and down the engine remains stationary while when the rear wheel of a motor scooter goes up and down the whole engine and transmission moves up and down with it These days 99 of scooters have a twist and go automatic CVT transmission which means you don t have a clutch to control and you don t have to change gears while 99 or motorcycles have a manual clutch and you have to shift gears manually with your left foot This also means that on 99 of motor scooters you apply the rear brake with your left hand while on 99 of motorcycles you apply the rear brake wit
9. 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 Back to Top 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 min
10. aren t the small engine size usually limits then to a top speed under 40mph maybe 45mph downhill with a tail wind In the United States the definition and regulation of mopeds differs from state to state Again calling on Wikipedia Legal terms and definitions of low powered cycles vary from state to state and may or may not include Moped Motorcycle Motorized Bicycle Motorscooter Goped Motor Driven Cycle and or others A moped s speed generally may not exceed 30 mph 48 km h on level ground even if it is capable of going faster In a few states this number is 20 or 25 mph 32 or 40 km h and in most states the maximum engine capacity is 50 cc However Kansas Motorized Bicycle K S A 8 126 8 1439a allows up to 130 cc 13 Some states like California require pedals while others do not Virginia allows mopeds to operate at up to 35 mph 56 km h Some states like North Carolina require there to be no external gear shifting mechanism How Much does a Scooter Cost Japanese and Italian scooters which are sold through authorized dealers the price goes up significantly For a 50cc scooter expect to pay around 3300 for something like a Vespa LX 50 which is a classic small scooter or something like 3000 for an Aprilia SR50 fuel injected two stroke which is a little more sleek and modern looking The classic Honda Metropolitan 50cc sells for around 2000 Going up to a 250cc for something like an Aprilia SportCity 25
11. art it can make the scooter slow to accelerate it can cause the scooter to idle badly and stall or it can make the scooter idle fast so that it s trying to go all the time and needs the brake to hold it stationary None of these things are good 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 Idie Speed Adjustment Throttle Control 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 i
12. as to be turned on e The kill switch usually near the right grip has to be in the on position e The rear left brake lever has to be squeezed e The starter button must be pressed Some scooters may have other interlocks on the front brake or the center stand Check your owner s manual to make sure that you are doing all you need to complete the electrical circuit which enables it to start 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 If the scooter does turn over but still doesn t start you have to check for a spark and make sure gas is getting to the engine To check for a spark remove the spark plug from the cylinder hold the tip of the plug against the cylinder head and crank the engine You should see a spark across the gap If you don t there s a problem with the ignition Could be a faulty coil or electronic ignition module which will have to be replaced or it could just be a lose wire If you do have a spark you need to check the gas
13. ay of telling so change it then you ll be sure You may replace the original oils with Castrol GTX 10 30W in the engine and Castrol Hypoid 80 90 gear oil in the transmission For the next 175 miles 25 200 you still should take it quite easy with no rapid acceleration keeping the speed down below 40mph or 5000 rpm then go ahead change the engine oil again Since there is no real oil filter the filter is just a mesh screen changing the oil during the break in period makes sense since it removes small metal particulates that the filter just won t catch During the break in period try to vary the engine speed as much as possible This isn t particularly easy with a CVT scooter since they tend to try to keep the revs pretty constant and change speed by changing the gear ratio It is good to speed up and slow down and not ride at a constant throttle setting for long periods Also avoid rapid starts and let the engine warm up for about a minute before moving off when you first start the scooter from cold to allow the oil to circulate This is good advice even after the initial break in period too It s probably not a good idea to use synthetic oil during the break in period Good old dino dinosaur oil is probably what you should use Synthetic oil may be too slippery and not allow the parts mainly the piston rings to bed in properly We suggest to stick with the manufacturer s recommendation typically 10 30W until after the break in period of 50
14. esn t want to tighten you ve probably cross threaded it so try again Finally tighten it up with a wrench It should be tight but don t over tighten it The seal is made with a rubber O ring You just need to tighten it enough so that it doesn t vibrate lose which would be a disaster since all your oil would drain and the engine would seize The recommended torque on the drain plug is 1 4 kg m about 10 ft lb Drain plug and spring Now you can add the new oil It goes into the same hole as the dipstick fits in You ll almost certainly need a small funnel to get oil into the filler hole without spilling it Check your user manual for the recommended oil type but on most Chinese 4 stroke scooters regular 10 30W or 15 40W engine oil is used You can use Castrol GTX 10 30W You can get a 5 quart bottle for around 12 try WalMart which is good for at least 5 oil changes on a 150cc scooter You can also use a synthetic oil blend if you wish though pure synthetic oil isn t usually recommended On a 150cc scooter you ll need about 0 8 0 9 liters which is just under 1qt As you add the oil check the level with the dipstick from time to time and fill to the recommended level When you have the right level screw the dipstick back in and you re done Changing the transmission oil is also very simple Most scooters recommend changing the oil at least every 2000 miles At the rear of the CVT on the left side of the bike there are drain and fill plu
15. ff with a motorcycle 250cc scooters are just about OK for freeway use and should be able to cruise at 60mph and get up to speeds of 70mph or more if pushed We wouldn t recommend riding anything less than a 250cc scooter on the freeway you might want to check on our 300cc motorcycle that is listed on our website What MPG Does a Scooter Get Back to Top This depends mostly on the engine size The smallest engines are typically 49cc and they can give up to 90 mpg depending on what type of riding you do and how much you weigh Obviously if you weight 300lbs and do mostly short stop and go trips you ll get a lower mileage than if you weight 100lbs and travel mostly on long trips at modest speeds At the extreme we ve seen figures of 110 120 mpg for 50c scooters when the rider was trying their best to drive as economically as possible 150cc scooters aren t quite as frugal but we ve seen reports of up to 85mpg With the larger engine sizes 300cc you should still get around 70 mpg from a scooter traveling at legal highway speeds That s about the same as a Toyota Prius Hybrid but the scooter will be a lot more fun Scooter Wheel amp Tire Size Back to Top Motor Scooter wheel size varies from a minimum of about 10 to a maximum of around 16 Most are either 12 or 13 This is the size of the metal wheel itself and doesn t include the tire The measurements is the diameter of the wheel rims The tire may add 5 or 6 to the diameter My sc
16. gs for the transmission Place the oil drain container under the drain plug Now remove the filler plus first then the drain plug and about 100 to 200cc of oil will drain out There should be a sealing washer between the drain plus and the transmission casing Make sure it s there and then screw the drain plug back into the transmission case To refill the transmission you squirt oil into the fill hole until it runs back out That s your level check Use the recommended oil which in most cases is 80W 90 gear oil though a few bikes may recommend using engine oil To get it into the small hole you can use a small funnel and a short length of small diameter rubber hose All you need is something to squirt 100 200cc of oil into the hole You may be able to buy the oil in a plastic bottle with a long plastic tip which you can use to directly squirt oil to the transmission fill hole When it starts to run back out it s full and you can replace the fill plug note that it too should have a thin aluminum sealing washer Now run the engine for a minute or two then check the oil level and add more if necessary Check for any leakage around the drain plugs If all looks OK you re done for another 1000 miles Scooter Carburetor Adjustment Back to Top If there s any one component that s more likely to go out of adjustment on your scooter it s the carburetor If it does go out of adjustment lots of things can happen It can make the scooter hard to st
17. h your right foot While there are still a few manual scooters and there are a few automatic motorcycles both are very much the exception rather than the rule These differences result in a motorcycle usually having better acceleration high speed handling characteristics but a motor scooter is often more maneuverable at low speed and is easier to ride especially for novices Scooters usually have a small engine from 50cc to 250cc though there are 400cc and even 800cc scooters so engine size doesn t define them While most are limited in speed scooters with a larger engine can exceed 100mph and cruise easily at freeway speeds so speed isn t a defining characteristic either Scooter Motorcycle So what is a moped then That s a little trickier but the working definition for most DMVs is a motorized two wheeled vehicle with an engine of less than 50cc capacity It used to be that a moped was a Motorized pedal cycle i e basically a bicycle with a small engine but some jurisdictions don t require pedals Again we can also look at Wikipedia for a definition Mopeds are a class of low powered under 50cc displacement motorized vehicle generally two wheeled A Moped is driven in an upright position with the rider s back perpendicular to the seat From a practical point of view in most jurisdictions mopeds can be ridden without requiring a motorcycle license a car license is sufficient They may be speed limited by design but even if they
18. he one on the scooter They will inspect the vehicle as well Your DMV will collect the sales tax as well as any applicable registration fee and will issue a license plate for your vehicle
19. ic start giving out a burnt smell You might have a burnt out electric start Sometimes there is no smell My Engine Froze Back to Top e The cause is lack of oil getting to the piston and needle bearing areas Certain oil canj t cling on when the engine get too hot As a result the needle bearing fell apart inside and caused the engine to cease You can buy a new a engine or try to rebuild it Be sure to always maintain proper engine oil levels to help prevent this from happening How Do Adjust My Brakes Back to Top e Brakes can be tightened by the handbrake area by the handlebar or by the wheel area My Scooter is Not Holding Its Charge Back to Top e Using the headlight electric start and alarm if applicable too much will drain the battery e Gas scooter does have the ability to charge itself but slowly An optional charger can be for 25 at any local automotive stores e Most new scooters would have a full charge and it would be display on the battery gauge But in time the batteries would loose their ability to hold a full charge That s normal e Sometimes charging the batteries too much even when they are not low Most of these batteries charging cycle are around 250 300 times e Sometimes store your scooter away for a long period would cause that as well If the battery power drops beyond a certain point the charger would not recognize it Sometimes you could jump start the batteries by using a higher Amp charger
20. im diameter The 130 60 part indicates that the width of the tread is 130mm 5 1 and that the tire has an aspect ratio of 0 60 or 60 which means that the sidewall height is 60 of the width of the tire Some tires are designed for front wheel use some for rear wheel use and some can be used on either wheel Though most tires today are tubeless there may still be a few tires which require an inner tube especially on older scooters The tread pattern may be directional meaning that it has to be mounted the correct way around to perform properly and there should be an arrow on the sidewall which shows which way the tire should rotate You may also see a speed designation on some tires between the 130 60 and 13 This is a letter which runs from J to Y J indicates the tire is safe to use up to 62mph L is up to 75mph N is up to 87mph P is up to 93mph and S is up to 103mph You probably won t be going any faster than that on a scooter However there is a W designation shows the tire is safe up to 168mph As far as know there are no W rated scooter tires Most scooter tires will be priced in the 55 85 region Scooter Repair Back to Top 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
21. lt for wear and cracks Check wheel and steering bearings Though not exactly maintenance We d recommend carrying a basic tool kit at all times That would include the following items 3 8 drive metric socket set Flat blade and Phillips head screwdrivers Roll of electrical tape Roll of duct tape Pair of pliers Pair or wire cutters Flashlight LED type for long battery life Short length of wire Set of metric wrenches Short length of fuel vacuum hose Spark plug wrench and spare spark plug A few nylon cable ties Scooter Brake In Back to Top Different manufacturers recommend different break in procedures For example most of our scooters manufacturers recommend the following 0 150km maximum speed 30km hr 151 300km maximum speed 40km hr 301 800km maximum speed 50km hr 801 1500km maximum speed 60km hr Of course the speedometer is calibrated in mph and the odometer reads in miles so some translation is needed In round numbers these instructions correspond to 0 100 miles maximum speed 20 mph 101 200 miles maximum speed 25 mph 201 500 miles maximum speed 30 mph 501 1000 miles maximum speed 40 mph What we recommend is to use the ride it like you ll ride it but gently technique That involves riding pretty gently for the first 25 miles Speed under 30 mph revs under 4000 rpm then changing the original Chinese engine and transmission oil The original oil might be OK or it might be cheap and nasty You have no real w
22. ooter has 13 wheels rims but the tire measures about 19 across in total So what are the advantages and disadvantages of different sized wheels Well the smaller the wheel the more maneuverable the scooter can be The smaller wheel has less of a gyroscopic effect making it somewhat easier to turn though this also depends a lot on steering geometry So in general scooters are more maneuverable than motorcycles which have larger wheels The converse of this is that larger wheels may give better stability at speed The downside of smaller wheels is that they don t roll over obstructions in the road as well Just think of a pothole in the road If it s a large hole and a small wheel the wheel could fall into it Even if it s a raised obstruction like a tree branch or a curb a larger wheel will roll over it with less effort than a small wheel That s one reason why off road trucks often have monster wheels When you re driving over rocks a big wheel makes life easier Similarly if you re riding over roads filled with potholes for example New York City you ll value larger wheels While a few scooters have 16 wheels e g MC_X1507 and a few have 10 wheels e g MC U1504 most scooters have a 12 or 13 wheel which is a reasonable compromise between maneuverability and stability Scooter tires come in all sizes of course with a typical 13 wheel scooter tire having a designation something like 130 60 13 The 13 refers to the wheel r
23. receive your registration documentations 7 business days after receiving your street legal scooter or motorcycle To confirm simply send an email to mso scooterdepot us include your order number and VIN in the subject or the body We will have one of our professional title representatives to process your title request immediately MSO request generally requires 3 5 business days to process and it is FREE of charge Vehicle Identification Number is usually located on the front of the steering stem or at the bottom of the floor mat where you would place your foot The VIN number consists of a 17 digit alpha numeric number and usually has the engine number located on the same plate The plated steel mount can be either black or steel Each MSO Title certificate will be accompanied by a Bill of Sale and Invoice for registration purposes If your state requires your MSO to be notarized please indicate on your MSO request form There is a 25 00 fee for each notary We offer overnight service for an additional 55 00 Please note overnight service only guarantees we mail your documents via overnight service We do not guarantee your MSO will be prepared and processed overnight There is 20 00 fee for each replacement MSO Once you receive these documents you need to take them with your scooter or motorcycle to your local DMV Department of Motor Vehicle They will inspect the bike and compare the VIN Vehicle Identification Number on the paperwork to t
24. s center stand If the ground isn t level you won t get an accurate reading of the oil level when you put the new oil in To change the engine oil you ll need a wrench to remove the oil drain plus a flat dish container with a capacity of about 1 2 gallon and a funnel First remove the dipstick which you use to check your oil We d also recommend you wear rubber gloves or at least on the hand you use to remove the oil drain plus On most scooters there is a spring which will push the plug out when you have fully unscrewed it and oil will pour out of the drain hole all over your hand It s just messy if the oil is cool or warm but if the oil is really hot it will burn your hand So wear a glove to be safe Put the container for the used oil below the drain plus loosen it with a wrench and then slowly unscrew it by hand As it comes lose the spring will push it down so be prepared for that You may drop the spring and a small wire mesh filter into the draining oil but that s OK you can fish them out later Give the oil a minute or two to drain out Make sure the filter is clean and then put the filter spring and drain plug back The spring sits on the plug and the filter sits on top of the spring with the mesh basket inside the spring You ll have to compress the spring to start the drain plus screwing into the engine but once it does start tighten it up by hand to make sure it s not cross threaded If it screws in easily it s OK If it do
25. s 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 Automatic Choke Air Fuel Out AirfFuel Ratio Adjustment 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
26. t s usually not hard to spot If you have a voltmeter you can measure the resistance across the leads of the choke It should be somewhere in the region of around 10 or 20 ohms If it s an open circuit it s burned out and will need to be replaced If it seems to be OK it may be stuck or the wiring to it may have a problem Check to see that it s getting voltage It s also possible that there is a problem with the carburetor and if so you may need to remove it and clean it out If the scooter has been sitting for a few months with gas in the carburetor the gas may have evaporated and left a sticky gum behind that will prevent the carburetor from working properly and which must be removed If the automatic choke is OK the starter cranks the engine there s gas and there s a spark then there may be an engine problem You need to check the cylinder compression You need a compression tester to do this It screws in instead of the spark plug and measures cylinder pressure When you crank the engine you should see a reading of around 150 psi or more If it s 100 psi or less there s likely and engine problem bad valve bad piston failed piston rings which will need the engine taken apart to find Probably the most common problems are a dead battery or carburetor problems due to bad adjustment or build up of gummy deposits Carburetor problems usually come on slowly though If a scooter is OK one day and refuses to start the next day I d firs
27. t suspect an electrical problem My Scooter is Not Charging Back to Top e Make sure the fuse in scooter is good e Check the wires behind the fuse holder and the charging jack Sometimes they come loose My Scooter is Hard to Start Back to Top e Is the spark plug dirty Clean or replace it if its dirty e Make sure the carburetor and the intake manifold are tightly secured to the engine e Check the gasket between the carburetor and intake manifold Sometimes the gasket is bad and caused leak Solution replace new gasket or just toss the bad gasket away and screw carburetor back Try to start again My Scooter Bogs out When I Turn the Throttle Back to Top e Adjust the screw with the spring on the side of the carburetor Clockwise to reduce gas flow and counterclockwise to allow more gas follow Usually bogged down is caused too much gas going thru the carburetor Give time for it to warm up If that does not solve the problem you need a new carburetor My Scooter is Leaking Oil From the Carburetor amp Muffler Areas Back to Top e Check the gasket between the carburetor and intake manifold It might be bad or maybe the carburetor came loose due to engine vibration My Electric Start Won t Work Back to Top Make sure the squeeze the left handle brake while pressing the electric button When the electric start make clicking noise it means your battery is weak Check the fuse Is your key switch good Is the electr
28. utes 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 Then you have to take your scooter to an inspection station along with a yellow card which the DMV office provided proof of insurance and a valid drivers license with motorcycle endorsement if the scooter is over 50cc and the inspection station will give you an inspection sticker good for 4 years They may also check that your helmet meets local requirements DOT certification etc It is very simple to title and register your new moped scooter or motorcycle When buying a scooter online you should expect to receive the following documents e A Certificate of Origin MCO a k a MSO Manufacturer Statement of Origin e A Bill of Sale The certificate of origin is an official title document that releases the scooter from the importer to the dealer The dealer released the scooter to you All documents for every street legal vehicle are usually sent in the mail 2 to 4 days after the scooter is shipped Please note we do not mail your MSO and Bill of Sales alone with your scooter there is a possibility of receiving your registration information before you even receive your vehicle since the trucking company usually has longer transit time frame compares to first class mail service We request each customer to confirm your VIN by email if you don t
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