Outboar expert? mariner 48

[aztec]

Gents, another plea.....

Gearbox is shot on my mariner 48.

Anyone know what to look for as a replacement?

I've been told about yamaha and maybe mercury being the same.

Any one know definitively what to search for?

Even consider buying a whole outboard to strip.

Thanks in advance.

steve.

 

[Kawasaki]

What year is the engine?

 

[aztec]

not sure, but i'm guessing it's old.

twin cylinder pull start.

very basic but well looked after and runs like a dream...

untill i hit a rock and killed the gearbox!

i've no idea if there's a plate of number on it, any idea of where to look?

 

[aztec]

Just had another look...

no plate on the engine, but there's what's left of it in a sort of oxidezed "i used to live here" sort of way.

I don't know enough about these things to even hazard a guess on age or even different changes over the years.

stuck again.

 

[Tremlett 15]

Think its a Yamaha based o/b, 2 cyl built 1975?? > 1980 ??

 

[aztec]

That would certainly fit with what i thinking.

Someone told me that the mercury engines were also made by yamaha.

that said, i'm hoping that i could source a gearbox from one of these "other" models, but not sure which (if any) are the same... some share the same water pump impeller, which seems to be a few of these only.

i'm told the 48/50/55 and 60 are simmilar, but the 70 is not.

i was wondering if a blue band merc/brown band???? would also be the same. some of the pics look similar, but before i start bothering people with taking photos of the fixings, i wanted a rough idea of what to search for.... Ebay/google/B & O's etc.

so still a bit stuck at the moment.

 

[Tremlett 15]

That would certainly fit with what i thinking.

Someone told me that the mercury engines were also made by yamaha.

that said, i'm hoping that i could source a gearbox from one of these "other" models, but not sure which (if any) are the same... some share the same water pump impeller, which seems to be a few of these only.

i'm told the 48/50/55 and 60 are simmilar, but the 70 is not.

i was wondering if a blue band merc/brown band???? would also be the same. some of the pics look similar, but before i start bothering people with taking photos of the fixings, i wanted a rough idea of what to search for.... Ebay/google/B & O's etc.

so still a bit stuck at the moment.

I think your engine may be "almost totally" a Yamaha, but not too sure re the gearbox ??

if you can post a photo of your gearbox, I will take a pic of my 1976/7 Merc 500 50hp blueband gearbox tomorrow & post the pic,

 

[aztec]

ok, have a look...

does yours look like this?

 

[Tremlett 15]

found a pic from 24/08/09, if I remember correctly the Merc gear ratio is 2:1, will check thro me manuals,

if you need any info from the MERCURY service manual re the gearbox, just let me know

 

[aztec]

looks identical except for the front fixings. mine are all from below, with the last holding the anode... i can see why some people say it's the same engine.

Thanks for going to all the trouble to help.

i'm possibly looking a buying another engine to use untill the parts eventually turn up on an auction site or B&O.

Thanks again.

steve

 

[Tremlett 15]

Think its a Yamaha based o/b, 2 cyl built 1975?? > 1980 ??

on checking another engine Serial No. list, it has the Mariner 48 engines built from 1980 > 1983

1980 48M: 670-003336
1980 48ML: 670-314836

48 work M: 1980= 670-004066; 1981= 670-005006; 1982= 670-006936; 1983= 670-007576
48 work ML:1980= 670-322656; 1981=670-322656; 1982= 670-332226; 1983= 670-337411

hope this is correct.

 

[aztec]

on checking another engine Serial No. list, it has the Mariner 48 engines built from 1980 > 1983

1980 48M: 670-003336
1980 48ML: 670-314836

48 work M: 1980= 670-004066; 1981= 670-005006; 1982= 670-006936; 1983= 670-007576
48 work ML:1980= 670-322656; 1981=670-322656; 1982= 670-332226; 1983= 670-337411

hope this is correct.

It may well be..

But no idea fo what that means to me unless you can cross reference a yamaha 60 hp gearbox??

I'm at a loss now, and am considering buying a newer engine, which is a shame as this one runs a treat and SWMBO is putting the blame firmly at my feet for buggering it up in the first place!