OMC Stern Drives And Motors 1964-1986 Repair Manual., Page 22Get this manual
COMPASS If the has auxiliary generator, itIf the moves during any of these tests, the compass should be relocatedNaturally, if something like the windshield wipers slight deviation, may necessary you differe deviation table use only when pieces of equipment operatingBear in mind, following course only off several hours considerable difference the end, putting you on reef, rock, shoalCheck the intended is solidVibration will increase pivot wearNow, you ready mount the compassT prevent on courses, the line through the lubber line and the pivot exactly parallel the keel of the boatYou can establish the fore-and-aft line of the with cord stringUse transfer this line the compass siteIf necessary, shim the of the compass until the stile-type lubber linethe affixed the case and not gimbaledl is vertical when the is on even keelDrill the holes and mount the compass
reading was observedThis as 189 degrees, 11 degrees off from the original readingFinally, the of the consumed, the can placed on both sides of the compass with NO on the readingT very important conclusions can be drawn from these tests1- Something have been in the cont of the can to the compass drastically