2005+ Mercury Verado 4 Stroke 200/225/250/275 6 gear housing Service Manual, Page 151Get this manual
Left Hand Rotation 1Install dial indicator and align the dial indicator pointer so that it is perpendicular to and touching the "I" mark on the dial indicator toolTighten the indicator tool onto the driveshaft and rotate the drives haft so that the needle in the dial makes at least one full revolution and comes to "a" on the dial indicator scale ob01534
aNuts (4) (obtain locally)Threaded rod9.5 mm (38 in obtain locallyDial Indicator Adapter
Dial Indicator Adapter Dial Indicator Backlash Indicator Rod
dDial IndicatorIndicator Pointer8acklash Indicator Rod
91-83155 91-58222A1 91-78473
2Apply backward pressure on the propeller shaft by holding shift crank against forward gear3Take the backlash readings by lightly turning the driveshaft back and forth(no movement should be noticed at the propeller shaft)abcObserve the dial indicator and record the reading Loosen the indicator tool and rotate the driveshaft 90 degrees in clockwise direction Repeat step above and take and record another readingRepeat step until total of backlash readings have been taken