When should secondary adjusters and chain be replaced

[MERCURY 2003LSE]

When should secondary adjusters and chain be replaced ?

I am having the Ford dealer change out my primary adjusters and chains and guides , should I also replace the secondary. ???

Thanks
Jay:beer:

[71cyclone]

That is not the question. The answer is ,if you are in it this deep , replace all guides .Cheap insurance. The tensioners are preloaded.

[1Marauder]

His short answer is "YES!"