Plug Critical Passages

When working around critical passages and scraping gaskets, be sure to plug the opening, as shown here. Next, scrape the gasket, taking care to work around the shop cloth. This practice will protect the engine from contamination.

Scraping The Gasket

Unplug The Passage When Finished

(Some of this material excerpted from “PRACTICAL BOAT MECHANICS”, by Ben L. Evridge, to be published this fall.)