PGO User Manual page 48

BATTERY
1. The battery is in Maintenance-Free type
(MF), so it won't be necessary to check
or refill the liquid. If the liquid is leaking,
please contact with your dealers A.S.A.P.
2. Battery wire connection:
Red wire connect to " + (positive)pole
", Black wire connect to " – (negative)
" pole.
EMS model: there are 2 black wires
shall all connected to battery,
otherwise you can't start the engine.
Refer to the figure:
NOTE:
Please do not try to take off the sealed rubber even when
charging the battery , that will damage your battery.
(+)pole, 1 Red
wire
45
(-)pole:
Carburetor: 1 Black wire
EMS: 2 Black wire