Lower Unit --Gear Selection

[Dellonn]

Hey guys please help. Today I attempted to locate a manual for my 88'ish 48HSP Johnson motor. When I was unable to do so, I proceeded to change the impeller assembly on my own. However, I screwed up the shift linkage. I think today i'm aware that I should have dissassembled the linkage up top in the cowl rather than below in the lower unit. But the damage is done. I'm not sure how to get the linkage re-attached in such a small space, and i'm certainly not sure what position the linkage should be at, I accidentally (due to stupidity) changed the height adjustment (i'm guess that's what the threaded dealy thing is) on the linkage. Is there any hope? or throw it all away and buy a new engine?<br /><br />Thanks for any help you can offer<br /><br /><br />--Dellonn

 

[OBJ]

Re: Lower Unit --Gear Selection

Hi Dellonn and welcome to iboats.....<br /><br />I keep wanting to ask how you got the shift rod out without taking the screw pin out up inder the lower carb???????<br /><br />Anyways.....Puts lube on the threaded end of the shift rod and gently work it back into the hole going into the lower unit. It has to pass through an oring so becareful. Once you have it in, all you need to do is thread it back in to the shfiter. You will feel the hit the shifter...may have to poke around a bit to get the rod in the shfiter hole. There is a certain height for the shift rod but I don't know it right off the top of my head. It's measured frm the top of the gear case to the center of the hole in the end of the shift rod. The shift rod must be in neutral. Maybe one of the other guys will know what the measurement is.

 

[Goldfish]

Re: Lower Unit --Gear Selection

The dimensions is:<br /><br />Short shaft<br />15 29/32 +- 1/32in.<br /><br />Long Shaft<br />20 29/32 +- 1/32in.<br /><br />And this mesurement is from the center of the shift rod to the top of the gear case. Make sure the engine is in NEUTRAL when you do this measurement (not fully down and not fully up, just in the middle) <br /><br />To make this measurement, i used a wood yardstick and a pin, stuck the pin in the yardstick at the appropriate height and turned the rod to make the pin stick in the middle of the shift rod hole.<br /><br />(Yes i played with the rod on mine even tho people told me not to )<br /><br />PS. Buy a Clymer manual, all that info i just told u is on page 419, including anything else you would ever want to know about that motor .

 

[Dellonn]

Re: Lower Unit --Gear Selection

Thanks guys, i'm an outboard idiot. I hope I can pull this off.

 

[Goldfish]

Re: Lower Unit --Gear Selection

Dont worry, just buy a manual and you will look like a pro :-D.

 

[Dellonn]

Re: Lower Unit --Gear Selection

Okay, trying to understand you guys correctly. I am disconnecting the linkage from underneath the carbs now, on the starboard side of the engine. I need to scew the linking into that threaded coupling and get my correct measurement that you provided me with. Then gently force (haha) the linkage down into the bottom of the lower unit to connect to shifter? Is this correct? Is there a retaining clip or bolt or anything that I could have undone?<br /><br />Yes, I will get a manual online. But, at the moment I have a dissassembled boat in the garage where my wife parks her car and the marina's here are kinda lacking in older stock.

 

[Goldfish]

Re: Lower Unit --Gear Selection

The linkage should be one long rod with a hole on one end (which is attached below the carbarator), and threaded on the other. Screw the threaded end into your gearcase (where prop is). Screw it in untill the shaft is at the proper length, apply some never seize to the bolts if you wish, then torque em down. There really isnt any bolts/clips to remove unless you really went crazy with disassembling things <br /><br /> http://www.ishopmarine.com/ishop/js...~A0000022~M0015604~M0015671~M0015674~C0299659 <br /><br />That is a link to a breakdown of your lower unit(or a general idea), all you should have to do is screw number 52 down into 48.

 

[angus63]

Re: Lower Unit --Gear Selection

Manual can be had at www.theoutboardwizard.com<br />Good luck

 

[Dellonn]

Re: Lower Unit --Gear Selection

Mine doesn't look like that. Mine basically looks like a miniature throw-out bearing like you'd find on the clutch of the car. I have that in my hand at the moment. Not sure how it attaches inside. Looks like it has a pivot point on it. See the two peices just below 28. That's what mine looks like.<br /><br /> http://www.sterndrive.info/outboardmotor/id13.html

 

[OBJ]

Re: Lower Unit --Gear Selection

Your engine is an 89' or later 48SPL.<br /><br />Is the shift cradle still on the end of the drive prop shaft? The next two pieces, shift lever and connector are held together with a pin. Attach the shift rod to the connector and lower the assembly into the lower unit. Put the forks of the shift lever into the shift cradle. Slide the shift lever pin into the gear case and into the notch in the shift lever and secure. The shift lever pin gives the shift lever a pivot point.

 

[Goldfish]

Re: Lower Unit --Gear Selection

If it is an 89'+ then the measurements i gave you are incorrect, when you get your correct manual make sure to look em up, but im pretty sure they are as follows:<br />short shaft: 16 15/16<br />long shaft: 21 15/16<br />That is for 89+; if I am incorrect, I am sure that someone will correct me

 

[Dellonn]

Re: Lower Unit --Gear Selection

OBJ:<br /><br />I showed my local marine mechanics the bits i pulled out of the lower unit and they said i should have never pulled the pivot screw out, no doubt. lol. They also say that it will next to impossible to get this stuffs back together without pulling the prop shaft and inner workings of the lower unit together. 300.00 bucks and most peeps here will do it. <br /><br />My 20.00 impeller turned into a 300.00 fix, wondering if i should just admit defeat and cough up the dough and avoid escalading the problem further.