Green Earth Choppers Motorized Bicycle Engine Kit

150 MPG!

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"The Harley of Hybrids"

     
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 Instructions

 

General Safety Precautions

  • Check Chain Tension.
  • Check Nuts & Bolts.  Make Sure Nothing Is Rattling.
  • Obey all traffic regulations.
  • Always wear a helmet and eye protection.
  • Do not operate bike without the chain guard installed.
  • Do not wear loose fitting pants or skirt when riding, as loose fabric can catch in the chain and cause serious accident.
  • Remember that you are riding a small motorized bicycle and other traffic may not see you.  Wear bright colors on your shirt and helmet.
  • Never ride at night without proper headlight, taillight, and reflectors.  Wear reflective clothing at night.
  • NEVER ride on sidewalk or pedestrian throughways, especially with the engine running.
  • NEVER ride your motorized bicycle in an unsafe manor.
  • Check local and state laws before riding your motorized bicycle on the street.
  • Always wear a helmet and eye protection!

 

Operating Suggestions

Engine Break In:

  • To correctly break in the engine, do not exceed 15 - 20 mph or 30 minutes of continuous running time for the first 50 - 75 miles (one tank of gas).

 

  • First tank or two of gas should be at a 16:1 ratio (1gal gas to 8oz oil). 
  • After engine is well broken in (after a couple hundred miles), a 20:1 ratio (1gal gas to 6.4oz oil) can be achieved using a high-grade synthetic oil similar to that used in chain saws. Although we suggest keeping the ratio to 16:1.

Note: Use a high-grade, synthetic 2-cycle motorcycle oil.  This can be purchased at most motorcycle shops, lawn and garden shops, Lowe's, or Home Depot.

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.

 

Fasteners:

Tighten all fasteners after every 5 hours of operation.  Cylinder head bolts and motor mount studs should be tightened to 9-10 ft./lb. using a torque wrench.  Check all fasteners before each and every ride. 

Use lock-tight and lock washers on all connections.

 

Chain:

Every time the bike is ridden, check the tension of the drive chain.

  1. Roll the bicycle forward to remove slack from the bottom of the chain.
  2. Find the center and push down on the top of the chain while measuring the deflection.
  3. Tighten the chain if the deflection is more than 1/2 inch.

 

Exhaust System:

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.

  1. Remove the exhaust pipe cap by loosening the retaining screw.
  2. Pull the cap and baffle out of the pipe.
  3. Clean with degreaser, rinse and dry.
  4. 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.

 

Right-Side Gears:

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

 

Gas Cap:

The gas cap seems to be a little temperamental.  We have looked for an upgrade but have not found a suitable replacement.  BE GENTLE! Use care when taking off and putting on the gas cap.  Push down on the gas cap, then gently turn it.

The little metal "arm" that keeps the cap in the tank, has a tendency of falling out.  Use care, and you may avoid some problems.

 

 

Starting And Operation Instructions

  1. Mix 8 oz. of 2-stroke engine oil (16:1 ratio) to 1 gallon of gas in a separate container.  Shake well to mix and fill the gas tank.  DO NOT OVERFILL.  Remember to put the fuel cap back on.
  2. Open the fuel valve.  The small lever pointed down with the 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.
  7. Let out the clutch lever and continue pedaling.  The engine will now start to turn over (start spinning). Pedal until the motor starts (you may have to adjust the choke).  Accelerate slowly at first.
  8. Twist throttle to increase speed. Reverse twist throttle to slow down.  To stop, pull handlebar clutch lever and apply the brakes.  To accelerate, pedal and release clutch while twisting throttle.
  9. Adjust choke to the smoothest engine running position.
  10. After warming up the engine, push the choke lever all the way down (off).  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. 
  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.
  13. After and before each ride, check all of the mounting fasteners, including the axle and brakes.

 

 

 

Installation Instructions:

Unfortunately, our installation instructions are proprietary information. 

Below is a link to a website that offers some installation instructions.  Although these are not our easy to follow installation instructions, these are at least better than the ones we used for our first kit.

 

However, these instructions are NOT the ones that we have created for you.  

When you buy our Kit, we will certainly include our comprehensive, easy to follow instructions.  For your convenience, we will also provide you with a web address with our instructions on them.

 

PLEASE READ ALL INSTRUCTIONS THOROUGHLY BEFORE INSTILLATION !

 

If you bought a kit from someone else and find the instructions baffling, here is a link to some instructions that are probably somewhat better.

www.biketomopedkit.com/documents/33.html

 

 

If you would like to have your kit professionally installed for you,

give us a call at (602) 578-8735.

 

 
 

© Green Earth Choppers, LLC