Correct size of Shaft Packing for my stuffing box?

Jun 23, 2019
8
Hunter 41 DS DS Deale MD
Folks I own a Hunter 41 DS 2005. The shaft size is 1 1/4" - any idea what size shaft packing material I should use 3/8th or 1/4"??
 
Jul 7, 2004
8,481
Hunter 30T Cheney, KS
There's a good article on this project but I don't know if it says how to size the material.

 
Feb 10, 2004
4,102
Hunter 40.5 Warwick, RI
The most accurate method is to measure the inside diameter of the packing nut and subtract 1.25" shaft diameter and then divide by 2.

FWIW, I have a h40.5 with a 1.25" shaft and my packing is 3/16". I guessed once, bought 1/4" and after struggling for a while I bought some 3/16" that went in exactly like it should. Lesson learned- don't guess. Measure instead.
 
Feb 10, 2004
4,102
Hunter 40.5 Warwick, RI
Thanks Rich. very helpful.
I have the 4JH4E larger engine same for you?
No I have a Volvo MD22L-B. But it is 50hp and uses the same diameter shaft as you. Our boats are just inches different in length. But measure first to avoid a return trip to the shaft packing store.
 
Dec 25, 2000
5,916
Hunter Passage 42 Shelter Bay, WA
Our boat has a 1-1/4" prop shaft and a standard bronze stuffing box, which takes 3/16" packing material.
 
Feb 10, 2017
305
Hunter 41 Progreso
iceowood be careful if you do this in the water, taking out the old package is very hard and time consuming, you will have a lot of water coming in. i made only one warp around and i will wait for the next hail out to change the 3 strip that are very stuck inside.
 
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Jun 25, 2004
483
Hunter 306 Pasadena MD
Folks I own a Hunter 41 DS 2005. The shaft size is 1 1/4" - any idea what size shaft packing material I should use 3/8th or 1/4"??
I don't want this to sound like a smart-aleck comment, so please don't take it that way. We have a 2005 model year Hunter 306, and it came with a big manual in a 3-ring binder. The packing size is listed in the manual. Assuming the previous owner (if any) didn't toss out the manual, have you looked there? Many, many times, I've found myself asking a question here, only to later be looking through the rather voluminous contents of the blue canvas bag which came with our boat, which contains a pamphlet on just about every system on the boat, and where the answer could be found.

BTW: I seem to recall that ours was 3/16" for a 1" shaft.
 
Jun 23, 2019
8
Hunter 41 DS DS Deale MD
Thanks Jaysweet - please see in my earlier post (28 April) that I did eventually find the picture in my Owners Manual that I already had. Thanks friend.
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Jun 25, 2004
483
Hunter 306 Pasadena MD
Thanks Jaysweet - please see in my earlier post (28 April) that I did eventually find the picture in my Owners Manual that I already had. Thanks friend.
Yet another case of my not reading the whole thread carefully! Glad you found it, though.