Normally, you would change oil & filter at 5 to 6000 kms, or say about 3000 miles. This ensures clean running of the internal parts. Old oil creates sludge, which will block those small oil passages, and wear the parts. You can extend these intervals a little, but not too much. Keeping the inside clean ensures long life of the engine, whether you intend to keep the machine for a long time, or intend to sell down the line. The next buyer will be grateful of the service, and it will be easier to sell. Use a good quality Honda oil, as it has additives specially made to run in this engine.
Honda recommends changing it at 100,000 miles. I personally recommend you change it every 75,000 miles. The 2003 Honda Accord had problems with the transmission so I would recommend this as a preventative measure.
105,000 miles.
Honda does not list changing P/S fluid as a regular schedule maintenance item at any time. I would change it at 100,000 miles and use only Honda P/S fluid.
100,000
They will make a grinding noise that's how you can tell.
Really depends on how you ride...do you ride short trips or mostly long, highway miles? If mostly short trips then I'd say change it every 6 months. If mostly long trips then change it every 3,000 miles.
If it is a 2.3 L 4 cylinder engine, the timing and balancer belt should be changed at 105,000 miles. I would suggest changing the water pump, camshaft and balancer seals at the same time.
If it is a 4 cylinder it does not have a cam belt it has a chain that normally will last the life of the engine. If it is a V6 Honda recommends changing it every 105,000 miles under normal conditions or every 60,000 miles under severe conditions. Warning: The V6 is an interference engine.
It should be changed every 75,000 miles at the very least.
the miles are 81000 of Honda odeysse 2004, When should change of timing belt?
30000 miles.
Timing belts last about 70,000 miles. You should change the water pump while you're in there; Honda likes to drive them off the timing belt, they wear out about as fast as the timing belt does, and since you're in there anyway...