Seller notes

CDHPOWER Round CNC Racing Head 40mm kit/silver;1. For new motor run-in period is 300km at least.2. During runin period, it is prohibited to accelerate throttle handle too fast, you can grip the handle slowly (step by step), or the motor will be locked up.3. Mixing ratio of fuel and engine oil: 16:1 for new sets, 20:1 after running 500km. Gasoline motor: silver 80cc with Racing CNC head, Engine Type: Single cylinder, air-cooled,2-strokeMixing Ratio of Fuel(90#) and Engine Oil: 16: 1 for New sets,...

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