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I got a Baja sc50-2 scooter and it won't start

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

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  • 41 Answers

SOURCE: Yamaha vino 50 cc scooter

hello, check to see if it is a switch (pull hand brake back when starting

Posted on Nov 25, 2008

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cape cod bob
  • 292 Answers

SOURCE: starting problems with gilera dna 50cc scooter

no, if it starts on the kicker petrol is not an issue, could be battery though

Posted on Apr 11, 2009

  • 61 Answers

SOURCE: scooter`s electric starter does not work

the neutral switch might be defective or the wire.
could be a bad key switch. try jiggling around with the key as you are pressing the starter button

Posted on Jul 22, 2009

  • 339 Answers

SOURCE: i have a peugeot elyseo

with 2 stroke engines there is 3 things that you need petrol air and spark if you have them the bike will run you say you have cleaned the carb have you checked the air box the filter could be blocked restricting the amount of air in also have you checked the spark plug remove it and see if you get a spark place the plug onto the engine so thats its touching some metal and try and strart the bike you should get a nice fat spark if you dont then replace the plug if you do have a look at it is it oily and black if so the the air screw on the carb needs turning 1/2 a turn inwards if its white then 1/2 turn out if it looks ok the check for compression place your finger over the hole in the engine where the plug came out and try and start the bike your finger should be pulled gently into the hole if not then the piston ring has either cracked or snapped and will need replacing
if all this is ok spray some easy start into the air box and kick the bke over it should start if it does then a new carb might be needed

hope this helps

John

Posted on Jun 09, 2011

  • 339 Answers

SOURCE: Scooter won't start with electric

  1. Try depressing the brake handle when starting.
  2. The battery has not been charged.
  3. The battery is hooked up wrong. This is often the reason for blown fuses.
  4. There isn't enough gas or two-stroke oil in the scooter.
  5. There is a gas flow problem, especially on the Euro Scooter or Yamaha models.
  6. The spark plug wire is not connected.
  7. A low battery or bad relay can cause the scooter to only start by using the kick starter.
  8. There is no spark to the spark plug. The coil is bad and needs to be replaced.
  9. Turn the key to the "on" position.
You need to check for a spark. There are a few ways to do this. The easiest way is to remove the spark plug and put it back in the spark plug cap. Then ground it to the engine - you should be able to lay it against a non-painted portion of the engine. Make sure there is good metal-to-metal contact. In a semi darkened area, attempt to start the scooter. You should see a definite spark at the tip of the spark plug. It's hard to see in direct light. If the color of the spark is blue, that means it's a strong spark. A white color is less strong, and a yellow color is weak. Most scooter starting systems are a bit weak (compared to cars). Even a yellow spark should start your scooter just fine.
The spark must occur at the right time. Just about all scooters made since around 1980 have an electronic ignition. These systems can rarely be set. In general, the spark occurs just before the piston reaches the top of it's stroke. There is a slight delay between the spark plug fire and the fuel-air mixture ignition. That's why the spark occurs a little early. Most ignition systems have an advance unit build in. As the engine speeds up, the time of the spark retards a little bit. This helps the engine fire the mixture at the proper time

There are a lot of tiny fuel and air passageways in the carburetor that must be kept clean it order for your scooter to run right. Carefully, take the carburetor apart. This can be relative easy (on a 50cc scooter). The carb has tiny passages that can get gummed up. Your scooter will not run correctly if the carburetor isn't completely clean, so take your time. I use a gallon container of carb dip (you can get a gallon at your local auto supply store).
First, remove all of the rubber and gaskets or they will get damaged. After a 20 minute soaking in carb dip, I blow out the carb with compressed air. You have to get all the jets and the passageways clean. Be sure the jets are clear, especially the starter jet. Sometimes carb cleaner won't clear out these tiny jets. Use a guitar or a piano string, a strand of copper electrical wire, or a tiny drill bit pin vise. Be sure not to increase the size of the hole in the starter jet or you'll change the tuning. Carefully reassemble everything, checking for cracks in the rubber carb boots and the gaskets. Replace them if they are old and cracked. Be sure and remove all rubber and gasket material first or they could get ruined. Spray carb cleaner also works if you're diligent.
If you have an electric choke, check it to make sure it works. Check the resistance between the wires - you should see around 10 ohms or less. Measure the length of the choke assembly. Remove the choke from the carb and plug the wires into a 12V source for 15 minutes. The choke body should be warm. Measure the length again - it should increase by around 1/8".
Next, consider whether your exhaust pipe is clogged. This is especially a problem with older two stroke scooters. The unburned fuel/oil mixture builds up in the exhaust pipe along with carbon over time. If the exhaust pipe is clogged, your scooter will run terribly or not at all. It can be difficult to tell if the exhaust pipe is clogged. The easiest way to tell is to remove it and try starting your scooter. It will be a bit loud - two strokes will sound like a chain saw. If it runs with the exhaust pipe off, you know that is the problem

hope this helps

John

Posted on Aug 21, 2011

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3. Discharged battery, check battery terminals for damage or corrosion, check the battery cables at "BOTH" ends for loose, corroded, or broken connectors, "INSIDE" and outside the cable harness, perform connector wiggle test and check cables with an ohmmeter if necessary.
4. Bank angle sensor tripped and ignition/light key switch not cycled to the "OFF" position and then back to the "ON" position.
5. Security alarm needs a reset.
6. Starter control circuit, relay, or solenoid faulty.
7. Faulty starter button.
8. Electric starter shaft pinion gear is not engaging or over-running starter clutch slipping.
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Scooter won't start with electric start or kick start.


  1. Try depressing the brake handle when starting.
  2. The battery has not been charged.
  3. The battery is hooked up wrong. This is often the reason for blown fuses.
  4. There isn't enough gas or two-stroke oil in the scooter.
  5. There is a gas flow problem, especially on the Euro Scooter or Yamaha models.
  6. The spark plug wire is not connected.
  7. A low battery or bad relay can cause the scooter to only start by using the kick starter.
  8. There is no spark to the spark plug. The coil is bad and needs to be replaced.
  9. Turn the key to the "on" position.
You need to check for a spark. There are a few ways to do this. The easiest way is to remove the spark plug and put it back in the spark plug cap. Then ground it to the engine - you should be able to lay it against a non-painted portion of the engine. Make sure there is good metal-to-metal contact. In a semi darkened area, attempt to start the scooter. You should see a definite spark at the tip of the spark plug. It's hard to see in direct light. If the color of the spark is blue, that means it's a strong spark. A white color is less strong, and a yellow color is weak. Most scooter starting systems are a bit weak (compared to cars). Even a yellow spark should start your scooter just fine.
The spark must occur at the right time. Just about all scooters made since around 1980 have an electronic ignition. These systems can rarely be set. In general, the spark occurs just before the piston reaches the top of it's stroke. There is a slight delay between the spark plug fire and the fuel-air mixture ignition. That's why the spark occurs a little early. Most ignition systems have an advance unit build in. As the engine speeds up, the time of the spark retards a little bit. This helps the engine fire the mixture at the proper time

There are a lot of tiny fuel and air passageways in the carburetor that must be kept clean it order for your scooter to run right. Carefully, take the carburetor apart. This can be relative easy (on a 50cc scooter). The carb has tiny passages that can get gummed up. Your scooter will not run correctly if the carburetor isn't completely clean, so take your time. I use a gallon container of carb dip (you can get a gallon at your local auto supply store).
First, remove all of the rubber and gaskets or they will get damaged. After a 20 minute soaking in carb dip, I blow out the carb with compressed air. You have to get all the jets and the passageways clean. Be sure the jets are clear, especially the starter jet. Sometimes carb cleaner won't clear out these tiny jets. Use a guitar or a piano string, a strand of copper electrical wire, or a tiny drill bit pin vise. Be sure not to increase the size of the hole in the starter jet or you'll change the tuning. Carefully reassemble everything, checking for cracks in the rubber carb boots and the gaskets. Replace them if they are old and cracked. Be sure and remove all rubber and gasket material first or they could get ruined. Spray carb cleaner also works if you're diligent.
If you have an electric choke, check it to make sure it works. Check the resistance between the wires - you should see around 10 ohms or less. Measure the length of the choke assembly. Remove the choke from the carb and plug the wires into a 12V source for 15 minutes. The choke body should be warm. Measure the length again - it should increase by around 1/8".
Next, consider whether your exhaust pipe is clogged. This is especially a problem with older two stroke scooters. The unburned fuel/oil mixture builds up in the exhaust pipe along with carbon over time. If the exhaust pipe is clogged, your scooter will run terribly or not at all. It can be difficult to tell if the exhaust pipe is clogged. The easiest way to tell is to remove it and try starting your scooter. It will be a bit loud - two strokes will sound like a chain saw. If it runs with the exhaust pipe off, you know that is the problem

hope this helps

John

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