BUHW vs BUHW-2 in an 80hp

pyro225

Petty Officer 2nd Class
Joined
Oct 1, 2014
Messages
191
Hi,

I have a 80hp Merc '85 - mentioned a few times on here - is running lumpy up to about 2000rpm. Went to look at the plugs today - the two on the bottom carb are silver on the outside and black on the inside and the top carb is black on the inside and black on the outside.
I then noticed the plugs installed are ngk buhw however when i looked it said it should run buhw-2 - would this cause running problems? should i put in buhw-2's? also i have only found buzhw-2 are these ok to use in place of buhw-2?

Also it is a bit unusual the carbs seem covered by this? is this normal? how do i get to the carb? Is this what all 80's look like?
C09A030D-EC82-4FA9-A2B6-3F4DD25F61C1.jpg
1FFC43CA-CA9E-4AC1-BBA1-7572A4FD41CD.jpg

52F3F566-7908-4A55-ADF0-4097CAAA0CB8.jpg
33FF463D-EEB3-4480-A9FC-D8F3FE64DC12.jpg
 
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