My 49 cc Moped Won't Start

Save

A hard-starting scooter's problems are often attributable to a loss of electrical spark at the motor's spark plug or a problem within the fuel system. Some detective work is required to determine the exact cause of the problem but does not require too much technical knowledge once you know what to look for. Once the problem is identified, making the appropriate repairs can get the scooter up and running once again. Don't be afraid to contact your scooter's dealership for help if you can't figure out the problem.

Things You'll Need

  • Gas
  • Multimeter
  • Automatic battery charger
  • Phillips head screwdriver
  • Spark plug socket
  • Socket wrench
  • Spark plug
  • Carburetor cleaning spray
  • Wire
  • Open the scooter's seat with the ignition key and unscrew the gas cap. Check the gas level inside the tank visually. Rock the scooter from side to side and listen for a splashing sound as the gas moves inside the tank. Fill the tank with fresh gas if you cannot see the gas level or hear gas splashing inside the tank.

  • Test the battery under the seat with a multimeter. Set the multimeter's knob to read a Direct Current (DC) voltage scale. Place the meter's red lead onto the battery's positive (+) terminal and the black lead onto the battery's negative (-) terminal. Recharge the battery with an automatic battery charger if the battery's voltage is less than 12.5 volts DC.

  • Unscrew the small panel from the center of the scooter's floorboard with a Phillips head screwdriver to access the spark plug. Pull the spark plug wire off of the end of the spark plug. Unscrew the spark plug from the motor with a spark plug socket and wrench. Push a wire onto the end of the spark plug. Place the tip of the spark plug against the motor and start the scooter. Replace the spark plug if a blue spark is not emitted from the end of the spark plug.

  • Locate the carburetor on the left side of the scooter, just above the motor. Pull the fuel line off of the carburetor. Loosen the clamps on both ends of the carburetor with the Phillips head screwdriver then pull the carburetor away from the motor. Unscrew the float bowl from the bottom of the carburetor with the screwdriver. Spray the jets--the tiny fuel nozzles inside the float bowl--with carburetor cleaning spray and pass a small wire through their openings. Reinstall the float bowl and carburetor onto the scooter.

References

  • "The Professional Motorcycle Repair Program"; Professional Career Development Institute; 1995
  • "Yamaha YW50S Zuma Service Manual"; Yamaha Motor Corp.; 2004
  • "Honda CHF50 Service Manual"; Honda Motor Co.; 2007
  • Photo Credit Jonny Basker/Photodisc/Getty Images
Promoted By Zergnet

Comments

Resources

You May Also Like

  • Why Won't My Scooter Start?

    Scooter starting problems are frustrating to the rider. Troubleshooting your scooter can help identify what parts may be malfunctioning. Start by checking...

  • Scooter Starting Problems

    After you ride your scooter for a while, engine problems may occur. Oftentimes, the root cause is something relatively easy to fix....

  • How to Kick Start a Moped / Scooter

    This article is designed to teach you the basics to kick starting any moped or scooter on the market. Most scooters have...

  • How to Tune-Up a Honda Metropolitan

    Honda Metropolitans are one of the most popular scooters. Known for their reliability, they are not as prone to breaking down as...

  • How to Troubleshoot a Honda 50cc Moped

    Mopeds are a great way to commute around town, through your suburb, or up large hills. Although 50cc moped engines are known...

  • My 50cc Scooter Won't Start

    Small-displacement engines like the ones used in scooters are generally very simple, making them easy to troubleshoot and repair. The three basic...

  • My Scooter Won't Turn Over

    There is nothing more frustrating for a rider when, after enjoying a long trip to a half way point and resting, his...

  • How to Start a Gas Moped

    The defining characteristic of a moped is the pedals used to start it. A street bike cannot exceed 50cc without being considered...

  • How to Modify a 49cc Scooter

    You can modify your 49cc scooter in a number of ways to increase its power and performance. These modifications include alterations to...

  • How to Troubleshoot a Honda Lead Scooter

    Scooter problems can be grouped into three types: your scooter won't start, it won't stay running or it lacks adequate pickup. Depending...

  • How to Troubleshoot a Tomos Moped

    Tomos mopeds are known for their reliability, endurance, and 100-plus mpg gas mileage. These mopeds do, however, break down or stop running,...

Related Searches

Check It Out

How To Travel For Free With Reward Points

M
Is DIY in your DNA? Become part of our maker community.
Submit Your Work!