if the bike falls on its side the fuel that was in the float bowl escapes via the overflow ..yeah
now the possibilities of oil saturating your air cleaner via the breather comes to mind .
i dont know your valve clearances , i have no idea on the cond of your spark plug . do you kick it after a fall or do you hammer your E start .
i have no idea on the condition of your battery , if you have the correct float level , if you have decent compression .
:?: :?: :?: