Oct 8, 2022 · That would also work, the washer would keep tension on the threads. When I installed a new high output alternator I added a serpentine kit and the Balmar Belt Buddy.

May 28, 2013 · How to tension a belt correctly? The best tension is the lowest at which belts will not slip or ratchet under the most loaded conditions. You can gradually tighten the tooth by …

Jun 11, 2004 · I am trying to determine the correct tension for the small belt that drives the Sea Water pump on a Yanmar 3YM30. I can find references in the "Handy" manual for the V Belt …

Apr 3, 2006 · Autopilot drive has begun to occasionally disengage.\u000BRaymarine website suggests belt tension needs adjustment\u000Band to take it to your local Raymarine service …

Oct 30, 2020 · Trying to determine if alternator belt is too loose? I just installed new one, my first time, with this result: 1984 Yanmar 3GMD. Thanks in advance.

Dec 18, 2016 · A month ago, my Raymarine ST4000 autopilot stopped auto piloting. It was obvious the belt was the problem as bits of yellow belt teeth were falling out. Although I'm the …

Oct 7, 2023 · It relays on a couple of plastic eccentric gears to tension and un-tension the belt. These two gears depend on the friction between the plastic and the inside of the belt to operate.

Apr 18, 2023 · I read that Perkins recommends changing the timing belt every 3 years but the general consensus amongst some owners is 6 years. I have owned my boat for 5 years and …

Nov 14, 2025 · The saddle sizes for Yanmar diesels is 3.5". I'd encourage you to not use a dual belt and instead use a serpentine belt. It is very difficult to properly tension the 2 belts as belts …

Dec 22, 2004 · The alternator/water pump belt on my 4JH3E Yanmar diesel has failed 3 times this year. The belt is either stretching (unlikely I would guess) or the alternator is loosening up …