Honda EM50is Owner's Manual page 73

Starting the engine with remote control:
1.Turn the fuel valve lever to the ON position.
2.Turn the engine switch to the REMOTE (far left) position.
ON
(FT, GT, ITT types)
OFF
OFF
REMOTE
(UT, RT types)
FUEL VALVE LEVER
ENGINE SWITCH
3.Press and hold the start button until the engine pilot lamp illuminates.
The start button will automatically be disabled after the engine starts.
CAUTION:
Do not use the starter motor for more than 5 seconds. If the engine
fails to start, release the key, and wait at least 10 seconds before 
operating the starter motor again.
(UT, RT types)
(B, FT, GT, ITT types)
START BUTTON
PILOT LAMP
71