There are 2 belts under the hood to the left in my 2003 echo. At what interval are you supposed to change them. I have 135,000 km or about 81,000 miles on the car. I have never changed them

no it is not. (late answer) is this a double post?

all timing belts jump,
1: every 60k miles for most. ever read the service list.
some top quality belts go bad at 100k miles. so.....????

Honda uses an "interference" engine design.
do not skip this service, or the whole engine can grenade !!!
honda quote, pasted.
However, since these engines utilize an interference design, it is highly recommended to at least inspect the timing belt at 60,000 mile (96,000 km) intervals. It is an even better idea to replace the belt at these intervals. On 1990-94 models, Honda recommends the timing belt to be replaced at 90,000 mile (144,000 km) intervals. On 1995 models, the recommended interval is 60,000 miles (96,000 km).end quote.

and if the last guy put in a POS china belt, well, you are hosed.
no name belts are junk, never ever use one,
BTW i run Gates belts.

starter or solenoid could be the problem.
remove and take to parts store for a bench test.
the solenoid is usually mounted on the starter.

60,000 miles is the typical recommended interval for timing belt replacement. The belt can become worn and skip a tooth or even break. In that event, the pistons can collide with the valves and cause a considerable (and expensive) amount of damage. Changing the timing belt at recommended intervals is good insurance to protect against valvetrain and piston damage due to belt failure.

The recommended replacement interval for timing belt on 2006-2010 Hyundai Accent 1.6L is 60,000 miles or 96,000 kilometers.

INTERVAL IS 80.000 KM OR 5 YEARS.WHICHEVER OCCURS FIRST.IT TOOKS ABOUT 1HOUR TO CHANGE IT
MARKO

Check with the dealer to get belt change interval. 100,000 to 160,000 km is the most recommended.

No your 2000 Toyota Echo has a two belt system and I believe the belt routing diagram is under the hood near the radiator.

Hello tinaromano1: The factory specification are to replace the belt every 90,000 miles in severe service. I would recommend to replace at 90,000 no matter what the service would be. Keep in mind should the belt break there is always a chance engine damage may occur. Should you need further help just ask. Thank You for using FixYa. Roger

google it