Evinrude 200TXEDR correct spark plugs?

[Keyboardman]

I just finished rigging and test running a new to me 200 Ocean pro and noticed that the installed plugs differ from what the service manual specifies. There are QL77JC4's in it now and the book calls for QL82YC's. Wondering if there's any reason for the different plugs? Also it has an intermittent miss and is idling very high on muffs. Need to bring it to the ramp and see how it idles with some back pressure. This engine has been sitting for while and I'm sure the carbs will be needing attention.

 

[Faztbullet]

Spec's was changed ..dont go by book..correct plugs are QL78YC gapped at .030

 

[Vic.S]

As above QL78YC are now recommended

QL77JC4 were alternatives to the original QL82YC

 

[Keyboardman]

Thanks guys for the info, I'll be installing QL78YC's. Wonder why they started out with the warmer 82YC's? A buddy of mine thought the 82's might be better if I'm gonna do a lot of slow trolling.