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Safety Warnings



WARNING: Motorized Bicycles and their parts are Dangerous!

All persons by purchasing a motorized vehicle, engine kit, or individual parts from CJR IMPORTS LLC/LIVEFAST MOTORS, OR using assembly instructions from our website, which are provided as suggestions only, agree to the following disclaimer:

Operating this motorized bicycle or bicycle engine kit, or use of individual parts, involves the risk of serious bodily injury or even death. The buyer and any/all users accept total responsibility for any and all vehicle operation or use that may lead to personal injury, economic loss, social distress, other losses, costs and damages. Seller is not responsible for injuries and or damages of any kind resulting from operating this motorized bicycle, engine kit, or use of individual parts or instructions. Always have a qualified mechanic inspect your vehicle before operating a motorized bicycle.



  1. Obey all traffic regulations.
  2. Do not operate bike without the chain guard installed.
  3. Always wear a helmet and eye protection when riding.
  4. Do not wear loose fitting pants or skirt when riding, as loose fabric can catch in the drive chain and cause an accident.
  5. Remember that you are riding a small, motorized vehicle and other traffic may not be able to see you. Wear bright colors on your shirt and helmet.
  6. Never ride at night without proper headlight, taillight, and reflectors.
  7. Be sure to wear reflective clothing when riding at night.
  8. Never ride on pedestrian throughways or sidewalks, especially with the engine running.
  9. Never operate your MOTOcycle in an unsafe manner.
  10. Wear riding gloves to prevent injury to hands during an accident.
  11. Check local and state laws before riding your MOTOcycle on the street.





  1. After 20 hours of operation, check the exhaust pipe for excessive oil and carbon buildup. Be sure to use the supplied support strap to secure the exhaust muffler to a solid anchor point on the bike frame or engine.
  2. Remove the exhaust pipe cp by loosening the retaining screw.
  3. Pull the cap and baffle out of the pipe.
  4. Clean with degreaser, rinse and dry.
  5. Re-assemble.

Note: Excessive periods of low-speed operation, idling, or leaving the fuel petcock in the —on“ position during shutdown periods may cause the pipe to become clogged with unburned fuel.


  1. Every time the bike is ridden, check the tension of the drive chain.
  2. Roll the bicycle forward to remove slack from the bottom of the chain.
  3. Find the center and push downward on the top of the chain while measuring the deflection.
  4. Tighten the chain if the deflection is more than ² inch. This is done by raising or lowering the adjustment on the chain tensioner roller.


  1. Tighten all fasteners after every 5 hours of operation. 8 mm diameter cylinder head bolts and motor-mounting studs should be tightened to 9-10 ft./lb. using a torque wrench.
  2. Check before each and every ride.
  3. Use thread locker and lock washers on all connections.


  1. Remove the cover plate and keep a small amount of heavy grease on the gear train.
  2. Do not over-grease, as leaks will occur and also may adversely affect the clutch operation.
  3. Regular greasing, if required, will help reduce gear wear and keep the gear train quiet.
  4. Check the gears weekly. Remove old debris and apply a small amount of grease to the inside of the gear teeth.


  1. Fresh brake pads and clean rims assure proper braking.
  2. Check handbrake connections (if applicable) before each ride.



  1. Mix 6 oz. of 2-stoke oil (16 : 1 ration) to 1 gallon of fuel in separate container. Shake well to mix and fill the gas tank (1/2 gallon capacity). Do not overfill. Remember to put the fuel cap back on.
  2. Open the fuel valve. Small lever pointed down with fuel line is in the open position.
  3. Depress the small, round cap plunger (tickle button) to prime the carburetor. It is located on the left side of the carburetor next to the idle adjust screw. One or two times should be enough.
  4. Lift the choke lever to the —up“ position. It is the small lever on the right side of the carburetor.
  5. Pull the handlebar clutch lever inward, to disengage the engine from the rear wheel.
  6. Start to pedal œ downhill if possible for the first start.
  7. Let out the clutch lever all the way and continue to pedal. The result is a direct engine hook up with the rear wheel via the chain and sprocket, and the engine will now turn over (start spinning). Pedal until the motor starts. Accelerate slowly at first.
  8. Twist the throttle to increase speed, reverse twist the throttle to decrease speed. To stop, disengage the clutch and apply the brakes. To accelerate, pedal and release clutch while opening the throttle.
  9. Adjust the choke to the smoothest engine running position.
  10. After warming up the engine, push the choke lever all the way down. If the engine races too fast or too slow, pull the clutch lever and lock in the notched catch. Stop and adjust the engine rpm.
  11. If the rpm needs adjusting, turn the idle adjust screw (left side of carburetor) in or out slowly, to obtain the proper idle speed of about 1400 rpm =/- 100 rpm. To correctly break in the engine, do not exceed 20 mph or 30 minutes of continuous running time for the first 50 miles.
  12. To stop the engine, push the Kill Switch and turn off the gas valve at the tank. Turning off the gas will prevent fuel from being siphoned from the tank. Warning note: Never leave the fuel-tank gas valve in the open position when the engine is not running or when the bike is in storage.
  13. After and before each ride, check all of the mounting fasteners, including the axle and brakes.
  14. After using the first gallon of gasoline, the next fuel mix can be at 32:1 gas to oil ratio. Use a high-grade, synthetic 2-cycle motorcycle oil. This can be purchased at most motorcycle shops or lawn and garden shops. After the engine is well broken in (after several hundred miles), a gas-to-oil ration of 50:1 can be achieved using a high-grade synthetic oil similar to that used in chain saws. Warning note: Engine lockup or piston seizure due to improper gas/oil mixture will not be covered by your engine‘s factory warranty. It is the responsibility of the owner/operator to make sure the gas and oil are mixed correctly.

Note: I used non-synthetic oil during my first gallon mix at break-in to promote break-in wear. Then in the later mixtures, I used synthetic oil only for clean burn, low wear, and long engine life.