Go to autozone.com..Repair instructions.Look for serpentine belt.May be a routing image there.
you cant
chain
Doubt it is different from the older model years, a diagram was posted on this website for an older model echo.
The 2003 Toyota Echo takes 22" drivers side and 14" passenger side replacement windshield wiper blades.
3.6 litres
when it breaks
108
It is 30mm
It is underneath
$1500 to $2000
4 x 100