Running-in period is divided into two phases: The first phase is from 0 to 1000 km and the second one is from 1000 to 2000 km.
During running-in period, top speed of the motocycle should not exceed limitations given in the following table.
In order to limit the maximum speed of the motocycle in running-in period, the caps of the two carburetters are provided with stop screws (see Fig.2).
The lifted height of throttle valve is limited by the crew. At each end of running-in period, the stop screw should be cut off from the slotted position, as shown in Fig.2 Although the top screw can limit speed, it is necessary to control and operate the motorcycle carefully in running-in Period.
Long distance driving is not allowed within 0 to 500 km running-in period to avoid engine temperature rising. Keep on checking temperature of the engine, gear box, rear drive and brake drum. In the meantime, check all parts and components for fixation, adjust gap and tighten loosened parts in time.
Keep on checking quality of oil in crankcase in the running-in period. If viscosity becomes worse, and metal particles are found in the oil within the desired travelling mileage, the oil should be replaced with fresh one. After finishing the running-in period, the oil in gear box and rear drive should be replaced in hot status. Normal oil refilling and replacing should be performed according to the motorcycle lubrication table.
Try to avoid driving the motorcycle on bad in the running-in period. It Is not allowed to drive the motorcycle for long duration at high speed and under overloading condition. Load can be increased gradually when the running-in period is nearly over. The load should be increased gradually after finishing the running-in period. Only when 3000km travelling is obtained, the motorcycle can run at top speed and with maximum load.
On completion of running-in period, tighten the screw of cylinder cap in hot condition of cylinder.
