Evinrude 175 Disassembly ???'s

[Blinkin]

Model: E175TRLCSA Year:1980 HP: 175

I am trying to take this motor apart to see if it is worth rebuilding. I need tips on removing the plate that covers the crank. It is on the front of the motor which the carbs bolt to. This is my first teardown and I wanted to see if it was worth anything before I bought a manual for it. Any help is appreciated.

 

[Dhadley]

Re: Evinrude 175 Disassembly ???'s

Is the powerhead off the mid section?

 

[Blinkin]

Re: Evinrude 175 Disassembly ???'s

No. I was just tearing it down piece by piece. Do I need to remove the powerhead from the mid-section to get the plate off?

 

[Dhadley]

Re: Evinrude 175 Disassembly ???'s

It's not just a plate, it's actually the front half of the block. Once you get the powerhead on the bench you can remove the ignition & electrical as (basically) one unit. I'll pull the starter seperately just because it's easier but pretty much everything else can come off as a unit.

Then the carbs, then the intake. The front half has bolts in the front, top and bottom. Then the rod caps, then the crank comes out. Then I pull the head if it's not off already and slide the pistons out. Then the other side. Once you get the exhaust plates and by-pass covers off it should be ready to go to the machine shop.

Nothing real difficult, nice project.

 

[Blinkin]

Re: Evinrude 175 Disassembly ???'s

Thanks a bunch. That sums it up nicely.

Do you know of any good sources of parts for this engine?

I am definitely going to need a crank because the one on it snapped smooth off right below the flywheel. This is the main reason for tearing it down. I am trying to figure out how in the world that happened. If nothing is really wrong inside then I am clueless.

 

[Dhadley]

Re: Evinrude 175 Disassembly ???'s

Must be a mid 90's motor. e saw some of that about that time. The official word from OMC was a harmonic imbalance around 6200. They said to go above that or stay below, just don't spend a lot of time at 6200. Make up your own mind if you buy into that or not.

Another scenario is that if the #1 rod journal has been repaired. Seemed to end up broken like that sometimes.

There are lots of good places for used parts like cranks - I trust the guys at Superior Marine (800-338-9281). For powerhead parts and machine work I'd suggest the Guys at Mar Fab or Flagship.

 

[Blinkin]

Re: Evinrude 175 Disassembly ???'s

It is actually a 1980 model year.

Thanks for the parts references.

 

[Blinkin]

Re: Evinrude 175 Disassembly ???'s

Does anyone know the procedure for removing the powerhead? I thought I had everything loose but it isn't coming off. Are there hidden bolts or pins or some kind of trick to it?

 

[Dhadley]

Re: Evinrude 175 Disassembly ???'s

Do you have the bolt & nut off under each side in the front (1 bolt, 1 stud w/nut)? Nuts off the rear? Shift disconnected? Is it moving at all?

 

[emdsapmgr]

Re: Evinrude 175 Disassembly ???'s

I've had good luck getting old crossflow parts from Boatrecyclers of Wilmington. Purchased a crossflow crank from them a few years ago. Good folks. They advertise a lot on ebay. I am sure you can google them on the web too.

 

[Blinkin]

Re: Evinrude 175 Disassembly ???'s

Thanks for the info. Managed to get it off yesterday and everything looks pretty good.

Now it is time to buy a manual. Any opinions on the best book to buy for a rebuild? I also need a good source for gaskets and all of that good stuff. The iboats store didn't have much in stock for my motor.

 

[Dhadley]

Re: Evinrude 175 Disassembly ???'s

OE manual. You can get everything you need from Pro Marine (800-621-7761).

 

[Blinkin]

Re: Evinrude 175 Disassembly ???'s

Thanks. You have been a big help.

There will probably be more questions popping up once I get all of the parts in. Just a warning.Nothing like a newb with a wrench!

 

[Fl_Richard]

Re: Evinrude 175 Disassembly ???'s

I've found new OEM parts from http://bestboatparts.com. They often have even the wierd little clips and oddball parts available. (Less than retail and often better pricing than ebay)

I also use iboats when I can for the more common parts. They usually have good parts and they host this board so I support them too.