MERCURY MARINE OPTIMAX 225 Beeping Overheat Alarm
| CONF | DIAGNOSIS | PART MATCH | ACTION |
|---|---|---|---|
|
86%
CONF
|
Water Pump Impeller Repair Kit
The impeller is a rubber wear item that provides the mechanical lift for cooling water; vane fatigue or tearing prevents adequate water volume from reaching the engine block. Replacing the kit restores the hydraulic pressure required to circulate water through the cooling galleries.
SKU: 47-43026K06
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CHECK PRICE |
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8%
CONF
|
Engine Thermostat (130 Degree)
Outboard thermostats regulate the operating temperature of the powerhead; if the bi-metal spring or wax pellet fails, the valve remains seated, blocking water flow even if the pump is functional. This results in a rapid temperature spike and the triggering of the constant overheat alarm.
SKU: 855676003
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CHECK PRICE |
|
6%
CONF
|
Water Pressure Relief Valve (Poppet Valve) Kit
The poppet valve manages cooling water pressure at higher RPMs by opening to allow increased flow. If debris is lodged in the seat or the diaphragm is ruptured, the engine will overheat specifically under load or at high speeds despite idling correctly.
SKU: 803062T1
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the Water Pump Impeller Repair Kit.