YAMAHA PLUG SPRING 624-24634-00

Function and technical context

This spring is part of the engine closing and sealing system, maintaining the pressure and retention of critical components in the Yamaha cylinder head and engine block. Its function is to provide a constant tension that guarantees the hermetic sealing of plugs and accesses, avoiding infiltration of salt water and loss of lubricant in navigation conditions with vibration and temperature changes. A defective or weakened spring compromises the tightness of the motor, allowing water to enter the internal chambers and favoring internal corrosion of the equipment.

When to replace this part?

The spring should be inspected when there is a loss of load or visible weakening, symptoms that manifest themselves in drips around plugs and ports, as well as in reduced pressure in closed engine systems. It is recommended to check the condition of the spring during each seasonal maintenance or when work is carried out on the cylinder head; Preventively replacing this component during disassembly works avoids subsequent sealing problems and prolonged unplanned stops at sea.

Equivalent manufacturer part numbers