YD100 New Complete 100CC Bicycle Engine Kit Upgrade Magneto

YD100 Complete 100CC Bicycle Engine Kit.   

Now with Upgraded Magneto and Magnet. 

Get the Power!! 100CC Bicycle Motor Kit for Motorized Bicycles 

Better balanced crank Upgraded bearings / 60% thicker crank case around bearings

Upgraded CDI, Performance Speed Carburetor and More.

New Features Include:50mm bore single piece cylinder/head (increased weight capacity, lower operating temps, easier starting, sustained power output across varied rpm range)

High performance Speed carb

Silver anti-corrosion coating

High performance CDI with Yamaha components Improved magneto, High end allen bolts and Improved gas cap

This bike engine kit includes all of the necessary items to turn your pedal bicycle into a motorized speed demon

Easy to follow instructions and phone support if needed.

YD100  100cc  Complete Engine Kit Includes:

YD100 Engine with one piece cylinder/head50mm Bore, 40mm Stroke -

Pearl coating protects against corrosion

High performance Speed Carburetor. 

Angled LD Z8C spark plug

Improved magneto Stainless Steel allen bolts

Better balanced crank Upgraded bearings / 60% thicker crank case around bearings

Large intake port (40mm bolt hole width)

Round exhaust port40mm crank stroke (more powerful, efficient, and reliable)Type B piston (high wrist pin)Long rod (89mm)

Larger 8mm x 1.25 engine mount studs

Mounting Kit & Accessories

Black teardrop gas tank (2.5 L) w/ new fuel cap, fuel valve, fuel filter, and fuel line

415 Heavy duty chain with chain guard

4 Bolt Ball Bearing Chain Tensioner

New chrome muffler (longer angle for pedal clearance)

Throttle assembly with gooseneck style throttle cable

Twist throttle and cable with matching grip and kill switch

New quick release clutch handle

Large front mount for bicycles that have large down tubes

Available with 36 or 44 tooth rear sprocket & wheel adapter

Spark plug socket tool and gear removal tool

General  Information           First Few Rides go Slow!!! Obey all traffic regulations.  Always wear a helmet while riding.  Remember that you are riding a motorized bicycle and other traffic may not be able to see you.  Never operate your motorized bicycle on a pedestrian through way or sidewalk while the engine is operating.  Never operate your motorized bicycle in an unsafe manner. Check local and state laws before riding on streets.   WARNING!  ALWAYS wear a helmet while riding.    Motorized Bicycle Starting and Operating instructions:   1.  IMPORTANT:  PLEASE READ THIS:   Gas and Oil Mixture for Fuel ratio The engine is a 2 cycle design, therefore, a gasoline/oil mixture is necessary. During the break-in period (1st 2 gallons of fuel), Break in ratio for 80cc is 20 to 1, 8 oz per Gallon. After the break-in period, the ratio is increased to 30 to 35 parts gasoline to 1 part oil.  4 to 6 oz. per Gal. depending on use. Before riding and on a periodic basis continually check Nuts and Bolts for tightness. Engine vibration can loosen. “LockTight” is recommended. *NOTE: Use only 2 Stroke Oil to insure proper engine lubrication.    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 carburetor, located on left side of the carburetor next to the idle adjust screw.  One or two times is enough. 4.   Lift choke lever to the upward position. This is the small lever on the right side of the carburetor.  All the way up the choke is on.  All the way down the choke is off.   Move progressively downward to off position during engine warm up period. 5.   Pull the handlebar clutch lever inward, to disengage the engine from the rear wheel. 6.   Pedal; (downhill if possible for first start)