150 speed problem of pedal boat motorcycle

Eighty is a good speed. 150 is another big ship. 1 10+ is a little happy.

The belt may be too long and a little stretched. You can try Wandong Belt.

Engine oil, winter 10w30, summer 10w40 or 10w50, sj grade will definitely do. There is only one way to achieve fidelity. Go to the specialty store to buy it. The common Sinopec doesn't sell Kunlun? The price is right and the oil is good.

Experts sometimes don't know the identification method, so I won't go into details here. There are many methods on the Internet, which are not easy to operate.