Engine Parts

Several scooter brands have a problem where the moped scooter stalls out at full throttle, installing this brand name fuel pump solves that problem.  Many people have tried to solve this problem by adjusting the floats in the carb, this can provide a temporary fix, but the problem will return.

The under-lying issue is the carb gets starved for fuel because the pump installed at the factory can not keep up.  

Cylinder for 50cc 2-stroke Minarelli 1PE40QMB Jog engines

Specifications
Bore: 40mm
Exhaust Bolt Hole Spacing: 48mm
Horizontal style
Please see below for measurements

50-110cc ATV/dirt bike ignition coil for Horizontal cylinder, Honda style engines commonly found on ATVs, dirt bikes, mini choppers and pocket bikes. These engines can come with 2 styles of igntion coils, this being one. Please refer to Related Items for the other style.

• Bolt Hole Spacing: 55mm 
• Coil Wire Length: 12 inches

Valve Assembly - 50CC 139QMB Engines
INTAKE OAL = 64MM
INTAKE DIA = 18.5MM
INTAKE SHAFT = 5MM
EXHAUST OAL = 64MM
EXHAUST DIA = 16MM
EXHAUST SHAFT = 5MM

Valve Assembly - 150CC GY6 Engines
INTAKE OAL = 66MM
INTAKE DIA = 28MM
INTAKE SHAFT = 5MM
EXHAUST OAL = 65.33MM
EXHAUST DIA = 23MM
EXHAUST SHAFT = 5MM

All pistons are measured in 3 ways. Please click on “View more images” for a diagram of a piston showing the areas we have measured.  

All pistons are measured in 3 ways. Please click on “View more images” for a diagram of a piston showing the areas we have measured.