msd58
Petty Officer 1st Class
- Joined
- Feb 14, 2003
- Messages
- 299
Head cover in picture shows what appears to be a rubber type plug I assume is used to divert cooling water around glider more evenly. I know this common on Mercury OB's bit don't know about Yamaha. The bottom cylinder was the only one that had one. Did not see any in the block.
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