Yanmar SB-8 Zinc

[cliff4072]

Where is it located? I have looked everywhere.Cliff

 

[Brett19305]

On my YSM-12,

it is under a plug on the top of the engine near the thermostat housing. It has a square shoulder for removal. The zinc screws into the bottom of this plug. Since these are similar engines, your's may be in a similar place.

 

[TONY A]

YANMAR

I FOUND A GREAT YANMAR PARTS SITE. THEY SELL PARTS MANUALS AND SERVICE MANUALS, WORTH THE MONEY. I PROVED TO MY LOCAL PARTS GUY THAT THE 2QM15 HAS 2 ZINKS, WHEN HE WAS TELLING ME ONLY ONE.WWW.MARINEDIESELDIRECT.COMFOLLOW THE YANMAR LINKS.

 

[David11054]

On the prop shaft

Anyway, that's where mine is.DavidLady Lillie

 

[tmason]

under a right side plate

As you are looking at the SB8, there is a plate on the right side of the block with a stud and a nut mounted on it at dead center. The stud is a part of the zinc, but take the plate off first. You'll need a rubber washer and a gasket in addition to the zinc. www.dieselmarinedirect.com sells these parts. If you find the zinc supercorroded and the block full of crap, you might consider removing the head and the exhaust manifold to make sure that the water jacket isn't gunked up to the point of localized overheating.