JL1PE40MB Main Technical Specifications of the Engine：
1  Main Parameters：
   Engine Type:                                   Single, 2-Stroke, Water-Cooled
Cylinder Bore (mm):                            40
Piston Stroke (mm):                            39.2
Total Displacement (ml):                       49.26
Ignition Advance Angle :                      15o±2o
Compression Ratio:                            6.9:1

Engine Type:   JL   1    P    E     40         M    B
                                                                   Titular Capacity 50 ml；
For motorcycle；
Water-cooled；
Cylinder Stroke mm；
2-Stroke；
Horizontal；
Single Cylinder；
Standard Code。
 
Ignition                                 CDI
Air intake type                          OHV
Air exhaust type                         Crankcase
Direction of rotation                       Inverse Hour 
Lubricate type                           Lubricating oil separator
Start type                               Electric/Kick
2  Specification
Max net power & Max rotate speed , kW/(r/min)    4.0/8000±500
Rated power & rotate speed , kW/(r/min)          3.6/7500±500
Max torque & Max rotate speed, N?m/(r/min)      5.0/7000±500
Min specific fuel consumption, g/ kW?h          544
Low idling speed, r/min                        1800±100
Pollutants of idle speed emission                 CO≤4.0%; HC≤4000 ppm
3　 Powertrain System Parameters                          
Clutch           Automatic centrifuge、dry-type、shoe block
       Power out        castellated shaft
transmission     Front V-belt automatic ST , rear gearⅡ down
speed ratio      Infinite variable speed ratio: 2.63～0.87, Gear reduction ratio:13.5
4  Attachments
Carburetor type、model                   PZ19J、Plunger type
MAG type、model                          AX50、non contact flywheel magneto generator
Ignition Coil type、model               AX50、Plug induction type
Spark Plug type、model                   E7RTC/BPR7HS, Standard mid-electrode
Air Cleaner type、model                 2-Stroke 50cc, Sponge dry-type
Exhaust Muffler type、model             2-Stroke 50cc, Impedance combined type   
Oil Pump type、model                    2-Stroke 50cc、Plunger type
Emission-Control Equipment type、model  Second tail gas air-intake + Accelerant
cooling water pump .type、model           2-Stroke 50cc、single suction, single stage hypopiesia centrifugal pump
Start engine type、model                AX50、DC permanent magnet motor                   
5　Fuel & Lube
       Grade of Fuel                          White gas-line≥90#  GB17930
       Grade of Lube                          JASO FC or FB
6  Cooling Fluid
       Standard & Request                      Extended Life Coolant (Diethylene glycol)
       Capacity, L                             0.6
       Final temperature, ℃                    75～85
7　Outer size & N.W
SIZE（L×B×H）, mm                       620×390×230
　N.W, kg                                  20