Seller notes

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. Key Product Features:Package include: 1pc YD100 Motor only, 1pc CDH66 Performance Exhaust Expansion Chamber MufflerGasoline motor: YD100-CDH100CC(Real Displacement is 79cc/80CC)Engine Type: Single cylinder, ...

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