14520-ZV7-010 Tim Blt Adj Spring - Overview. The 14520-ZV7-010 Tim Blt Adj Spring is a critical component in Honda marine engine systems designed to maintain proper tension on the timing belt. This spring plays a vital role within the engine assembly system by ensuring that the timing belt stays correctly adjusted to preserve precise engine timing and optimal performance. Engineered with exact factory specifications, the spring ensures seamless integration with existing parts, maintaining optima