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5.0 Volvo penta outdrive

Old 06-09-2021, 09:14 AM
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Default 5.0 Volvo penta outdrive

Ok let me first start off with yes Iím a dumbass. I recently bought a 95 hurricane deck boat with the Volvo penta sx in it at what I thought was gonna be a good deal $2,000. Wasnít able to put it in water to test drive it first but the guy did put the muffs on it to fire it up and show that it starts an runs. The problem Iím having with it is that on land I can start it up and it runs prop is spinning but when I put it in the water last weekend it went nowhere. I can put it in gear with it not running and the prop will spin freely one direction and it doesnít spin in the opposite direction as it should. But why will it not go anywhere in water. Iím completely lost Iíve checked linkage and everything seems to be working correctly. Any ideas? Because at this point the wifey is ready to kill me for buying it
Old 06-09-2021, 09:22 AM
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ohh boy....head over to the Volvo I/O forum at iboats.com and ask. Hope its something simple like the shift linkage.
Old 06-09-2021, 09:35 AM
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I was hoping that’s what it was also but when I took cover off to check everything seems to be engaging and disengaging like it should. I’ll definitely check the forum you mentioned hopefully someone there can help before my wife kills me. Thanks
Old 06-09-2021, 10:02 AM
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Can’t tell you how many threads I’ve read over the years that all started the same…engine ran great in the guy’s driveway.
Old 06-09-2021, 10:27 AM
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Yeah I think we all have and think to ourselves that will never be me but yet here I am. Sad part is Iím a retired diesel mechanic and thought to myself itís gotta inboard motor so anything that goes wrong I can fix lol. Boy was I wrong. I just donít understand how the prop can spin while running on land but does nothing in water just doesnít make sense to me at all. I mean engine revs like it should throttle cables are working correctly but yet nothing
Old 06-09-2021, 10:27 AM
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pull the gearbox drain plug and check for debris on the magnet .

guessing you have something bad going on in the outdrive.

keep us posted on what you find ,and ignore the "" you should have got survey , water test , 7 mechanical reports , and your dog pissing on the trailer tire stamp of approval , its an old boat with old running gear , you will learn fixing it and best of all you will own it . ..
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Old 06-09-2021, 10:51 AM
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Thanks for the info Iím gonna pull plug when I get home this evening and Iíll let you know what I find. I was hoping it would be something simple but the way my luck has been lately Iím guessing itís gonna be a pain in my ass lol. I did talk with guy I bought it from and told him what itís doing. He claims that the choke button for cranking it up must of stuck but I not holding my breath on it.
Old 06-09-2021, 11:57 AM
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Ok, someone educate me…
I’ve read many threads over the years about a “spun prop” and this sure sounds like it. Or, are Volvo drives immune to this issue?
Old 06-09-2021, 12:43 PM
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They arenít immune- they have a rubber hub. It can happen, but would think youíd see evidence of what caused it to spin up.

OP - did you check your shift connection at the throttle and make sure your shift cable is moving freely?
Old 06-09-2021, 01:12 PM
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Okay lets verify a couple things here. Out of the water, engine running, you put it in gear and you hear it go clunk and the prop is spinning in the desired direction- yes or no? By what you wrote it goes into gear on land? Then when you go to water the boat dosent move?? Is the prop spinning at all when in water? Or its not spinning at all when in the water? Do you hear it clunk when shifting?
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Old 06-09-2021, 01:37 PM
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This works for 99.99% of all drives
pull the cover off the outdrive to expose the shift mechanism
pull off the cable
shift it by hand ... if you can't turn the prop in gear "No worries Mate ... I'm betting your shift cable maybe Kaput"

visually ... where ever i could see my cable it looked in GREAT condition
but it would shift into gear sometimes ... sometimes not
There was a explanation somewhere online why it is worse while boat is in water

pulled the cable it was like spagetti
new cable... never had issues since



Old 06-09-2021, 02:10 PM
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The shift cable is working like it should. The mechanism fully engages and everything is moving freely. When I crank it on land the prop spins I was told not to throttle up on it without it being in water that it would break shaft so I’m scared to try. But while on land without it running I can push throttle all the way forward and the prop isn’t spinning so I’m assuming that it’s engaged. When I put it in water to go out after choking it with button on center of throttle it fired up I let it run for a while to warm up when I tried to leave dock it made a clunk noise and prop wasn’t spinning. I tried forward and reverse but got nothing. But my theory is if it’s engaged when not running it should also engage when it’s running unless there’s a clutch like on a car or truck that could be slipping under the load of motor running not allowing it to spin. But I don’t no where to start looking for problems on boat I’m just a old worn out diesel mechanic 🤣🤣
Old 06-09-2021, 02:23 PM
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Rather then try to explain it to you.
Watch this.



Remember that if it's spinning out of the water and the hub is spun there isn't any resistance until it's in the water
Old 06-09-2021, 02:31 PM
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Volvo-penta? Duo prop? Different animal I'm thinking but sure sounds like a spun prop to me also.
Old 06-09-2021, 02:36 PM
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Originally Posted by Sparky75 View Post
Volvo-penta? Duo prop? Different animal I'm thinking but sure sounds like a spun prop to me also.

!995 SX not a duo prop
Old 06-09-2021, 02:36 PM
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At 2k, the fact that it even runs means you got a steal. Even a 5-10k boat is going to need some work, what were you expecting? Take it to a shop and you will still be ahead.
Old 06-09-2021, 03:28 PM
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Originally Posted by Weasel79 View Post
The shift cable is working like it should. The mechanism fully engages and everything is moving freely. When I crank it on land the prop spins I was told not to throttle up on it without it being in water that it would break shaft so Iím scared to try. But while on land without it running I can push throttle all the way forward and the prop isnít spinning so Iím assuming that itís engaged. When I put it in water to go out after choking it with button on center of throttle it fired up I let it run for a while to warm up when I tried to leave dock it made a clunk noise and prop wasnít spinning. I tried forward and reverse but got nothing. But my theory is if itís engaged when not running it should also engage when itís running unless thereís a clutch like on a car or truck that could be slipping under the load of motor running not allowing it to spin. But I donít no where to start looking for problems on boat Iím just a old worn out diesel mechanic 🤣🤣
if it is in gear and you can't turn it the likelihood of a spun prop is small. It should move the boat at low rpm ...then spin at higher rpm

Been fixing cars / bikes and boats for 40 +yrs years and had the same mindset as you Dang....It should work ??

you are describing exactly what happened to me
works great on land shifts into gear etc
in water Nope ... but then sometimes it would work

I searched online for a couple weeks cause I assumed the cable looks good and it shifts on the trailer
tried a bunch of adjustments , wasted a lot of time putting boat in and out of the water ... got real FRUSTRATED

the added pressure of the prop in water DOES makes a difference in shifting and sometimes it pops out of gear cause the cable no longer has the strength to hold mechanism position.

only the last foot of cable was bad .... it plastic coating all but gone,,, the metal casing had totally rusted ...ewwwwwww
you can't see this until you pull the cable it is hidden inside the rubber TUBE at the transom
when you change it you will understand why it rusts etc the tube gets muck inside holds water longer than it should nobody ever flushes/cleans out the tube until there is a problem
I put some Dawn dishsoap in there flush it out then add more detergent to lubricate shoving in the new cable through it

shift cable is a item you should look at replacing anyways as part of the process of getting a new to you boat seaworthy and as trouble free as humanly possible...
they are not expensive and only took me an hour the first time I tried to change one.
the size and length is printed on the cable close to the throttle/ shift lever

tuneup change oil in motor and out-drive
and yes do as other said look for chunks of metal ... don't get alarmed if you see a tiny bit of very fine stuff (just keep regular checks on it)
coolant level (if it has heat exchanger)

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Old 06-09-2021, 04:18 PM
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OK these have a cone clutch engagement system and when they develop a glaze on the friction surface they can slip or the engagement will be slow like a slipping auto trans. Not like a dog clutch drive where itís in, or out no in between. You might try first changing the gear oil to Volvoís spec oil to see if that improves it.
Old 06-09-2021, 04:34 PM
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Only a couple months ago I sold a 17í Conroy (Glastron) bowrider fish N ski... with dual battery-installation, MinnKota ďtip-offĒ bow trolling motor, bimini, 2 anchors, skiis and tow-rope, and a SS-Prop on a Volvo AQ125 outdrive, hummingbird depth/fish-finder on a single-axle trailer that had never been in salt-water and only 600 hours on it. I advertised it for $2K because it was a 1986 boat and no batteries installed and ďat this price first person with Cash pulls it awayĒ.... but absolutely NOTHING wrong with it other than 30 years of responsible ownership by myself. I put the Ad on C/L and had 20 calls first day, sold it at 8 AM next day for Cash to a husband/wife who put new batteries in it....and immediately called me to ask where to get that LeRhone marine alternator repaired since heíd admitted he stupidly put the battery in backwards and let the smoke out.
I told him, and the next day they put it in the water and called to Thank Me while they pulled their adult kids up on skiis.
I included the maintenance records Iíd kept on that boat since Day-1 and included all the Volvo and Conroy manuals and original Bill of Sale.
Considering todays prices on boats....Did I sell it cheap? Sure! But it had sat in my garage for 5 years without being started and he had to pump out the old gas. LOL.
(They called again the next week and expressed-again how Thankful they were for a good running boat.... They admitted they were pretty suspicious when they read the Ad... but were reassured when they showed up and saw the Maintenance Records Iíd kept in Aircraft Logbooks. (retired pilot)

Glad to see someone enjoy it.... and made room for MY NEW Hole-in-the-Water!
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Old 06-09-2021, 08:32 PM
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listen and do what Lou says , he has been around these things .

the old Volvo outdrives are pretty solid and not much goes wrong if maintained , they do slowly deteriorate if maintenance is not done regular.

that said, pull that plug, check for debris and go from there , no point in speculating until you have info as to the condition of the drive.

as above the cable being broken internally due to rust can cause all sorts of issues ( i don't think this is yours) but both throttle and shift cables should be replaced every now and then just as maintenance.

old boats have old boat problems , give it a good going over ,learn how shit works , spend a few bucks on it now before you start using it , this will save you lots of head fvcks later down the track..

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