Mercury F5AZ-6507-A Valve - Inlet

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Because of the complex nature of the job and the special tools and equipment needed, servicing these components, commonly known as a valve job, should be performed by a professional.

Because of the complex nature of the job and the special tools and equipment needed, servicing these components, commonly known as a valve job, should be performed by a professional.

They will remove the valves and springs, recondition or replace the valves and valve seats, recondition the valve guides, check and replace the valve springs, spring retainers or rotators and keepers (if necessary), replace the valve seals, reassemble the valve components, ensure correct spring height and pressure, and resurface the cylinder head gasket surface if necessary.

Doing the inspection will enable you to see what condition the head and valve train components are in and will ensure that you know what work and new parts are required when dealing with an automotive machine shop.

After the valve job has been performed by a professional, the head will be in like-new condition. When the head is returned, be sure to clean it again before installation on the engine to remove any metal particles and abrasive grit that may still be present from the valve service or head resurfacing operations. Use compressed air, if available, to blow out all the oil holes and passages.