Serp Belt HELP!
- Thread starter DDD
- Start date
Pierpressure1
Active Member
On my boat the alternator has an adjustment screw on bottom. Loosen top bolt first and you should see the adjuster parallel to boat bottom.
After I find the bolt, I assume I loosen it? What after that?
Thanks!
onthejob
Member
- May 1, 2013
- 266
- Boat Info
- 2003.5 Sea Ray 340 Sundancer, Raymarine A97 and Quantum radar. Hurley Davits with a Zodiac 310 Wave
- Engines
- 2x 370-hp MerCruiser 8.1S Horizon with V-Drives turning 4 blade wheels
You can skip right to step 2:
http://clubsearay.com/showthread.ph...-8-1-s-with-Pictures/page8?highlight=8.1+belt
Sublimetime
Active Member
my 7.4 horizons had a small pulley that looks like it does nothing but guide belt to next pulley,but actually is tensioner. loosen the large nut in center then turn the bolt the nut tightens on, this will move pulley up and down to tension belt.
Fun Times
Member
- Jan 2, 2010
- 336
- Boat Info
- 96 laveycraft 21 xt ski.
- Engines
- Mercruiser 454 MPI, 385 HP w/Bravo 1 Drive.
This depends on what engine serial number your engine is as they (Mercruiser) have had a few different belt adjustment designs over the years. The one in the "How To" link posted earlier seems it could be a little confusing as the OP (Hampton) says in his details he has an 2008 44 Sedan Bridge with an Cummins QSC-500's Straight Drives but below in his signature line he (Hampton) had an 2005 340 SD most likely with the 8.1 like he was working on. If so yours should/could/m ay be of a different design than Hampton's.
Though most probable, the following link/info below may be out of your serial number range as you "show" (but didn't mention) you have an 2008 year model but the info inside may help give an idea of how to check the belts alignment to "possibly" see why the belt may have broke should there be something out of adjustment from possibly a previous service due to Misplaced washer, etc.. outside of just old age on the belt's part.
http://www.mercruiserparts.com/bulletins/001/04/2003/EN_04.PDF
Last edited:
Bt Doctur
Well-Known Member
e are the idler and adjuster
