How do you reset the timing belt gears on a 1983 Toyota Tercel?

To reset the timing belt gears on a 1983 Toyota Tercel, first ensure the engine is at top dead center (TDC) on the compression stroke for cylinder one. Align the timing marks on the crankshaft and camshaft pulleys with their respective indicators. Once aligned, carefully install the new timing belt, making sure it is properly tensioned and the timing marks remain aligned. Finally, rotate the engine manually to confirm that everything is correctly positioned before starting the engine.