Honda EM50is Owner's Manual page 30

3.Turn the engine switch to the START position and hold it there until
the engine starts.
(FT, GT, ITT types)
(UT, RT types)
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.
NOTE:
When the speed of the starter motor drops after a period of time, it is
an indication that the battery should be recharged.
4.After the engine starts, let the engine switch return to the ON 
position.
(FT, GT, ITT types)
28
(UT, RT types)
START
ON
OFF
ENGINE SWITCH
ON
START
ENGINE SWITCH