Honda GCV520 Owner's Manual page 16

OPERATION
2. To start a cold engine, move the throttle lever to the CHOKE position.
To restart a warm engine, leave the throttle lever in the SLOW
position.
Some engine applications use a remotely-mounted throttle control
rather than the engine-mounted throttle lever shown here. Refer to
the instructions provided with the equipment powered by this
engine for remote control information.
3. Turn the engine switch to the ON position.
4. Operate the starter.
RECOIL STARTER (applicable engine types):
Pull the starter grip lightly until you feel resistance, then pull briskly.
Return the starter grip gently.
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THROTTLE LEVER
CHOKE
SLOW
STARTER GRIP