High torque at low speed, More stronger, reliable  performance.

The operation is more simple and convenient.

Overrized pump can pump more oil and make the  engine work more reliably.

The updated structure can Increase the effciency  of the engine air intake, make the engine  performance better, more reliable.

The updated decompression valve structure can  make the engine starter more easily.

There are more kins of appearance for customer to chose.