To Start Out And Accelerate - Yamaha YFM660R Owner's Manual

To start out and accelerate:

1. Release the throttle lever.
CAUTION:
Always close the throttle while shifting gears.
Otherwise, damage to the engine and drive
train may result.
2. Pull the clutch lever to disengage the clutch.
3. Shift into first gear.
4. Open the throttle gradually and at the same
time, release the clutch lever slowly.
5. Once the machine has attained adequate
speed, release the throttle, and at the same
time, quickly pull in the clutch lever.
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