Photo Courtesy of BoatingMag.com
Brand-new bellows keep sterndrives in good condition.
Sterndrive bellows are rubber “boots” that seal out water around the exhaust, U-joints and shift cable, while allowing the drive to pivot and tilt. These can wear out and require regular replacement (see owner’s manual for service intervals).
Before anything, take off the drive, and once you do, replace all bellows at once. For now, let’s focus on the exhaust bellows, using the MerCruiser Alpha One as an example.
Skill Level: 3/5
Time to Complete: 4 hours
Tools and Supplies
*Transom service kit with exhaust bellows for MerCruiser Alpha One (from $62.95, amazon.com)
*Bellows expander tool, Quicksilver part No. 91-45497A1 ($57.95, michiganmotorz.com)
*Bellows adhesive, Quicksilver part No. 92-86166-Q1 ($10.86, go2marine.com)
*Socket wrench set (½-inch drive)
*Socket wrench set with an extension (¼-inch drive)
*Knife (to slit old bellows)
*Flat-head screwdriver set
*Open-end/box wrench set