14520-ZV7-000 Tim Blt Adj Spring - Overview. The 14520-ZV7-000 Tim Blt Adj Spring is a vital component of the timing belt system in Honda marine engine systems. This spring ensures that the timing belt is properly tensioned, which is essential for synchronizing engine components and maintaining reliable engine operation. By keeping the timing belt at the correct tension, it prevents slippage and wear, which helps extend engine life and keeps performance at peak levels. As a genuine OEM part, it