You want the battery positioned so that positive is on the rear right and negative is rear left.
agree, but thats the problem. Even the battery as recommended by yuasa makes this difficult
Yuasa Batteries :: Motorcycle
Just pull the battery out and turn 180deg to the right and then flip it top to bottom 90 deg.
The terminals have holes on both ends.
our batteries are sealed and yes, they pretty much lay on their backs so to speak.