1978 Evinrude 70HP- Trouble starting/idling/bogging under load

[evinrude2323]

If it is in fact the correct unit you will also have the transom bracket bolts that go through the transom to deal with. If your lucky they we have a bit of wiggle room but if not you will have to deal with that as well. With the tilt tube nuts lose and the transom bracket bolts removed you may gain enough space to get it in there. If it’s the correct unit.

It looks like the correct unit… in terms of the 3 bolt holes and the way the 2 arms line up and land on the outboard shaft. I’m building a motor stand so I’ll get that done and pull it and try to install from the top

 

[saltchuckmatt]

Not sure what you mean by a "motor stand" but it just needs to hang in the air right behind the boat from a picking eye on the fly wheel or something else just not the clamps.

At that point you can attack it. Not always an easy job.

You might want to service that trim unit though. Have you bench tested it to see if it runs?

 

[evinrude2323]

Not sure what you mean by a "motor stand" but it just needs to hang in the air right behind the boat from a picking eye on the fly wheel or something else just not the clamps.

At that point you can attack it. Not always an easy job.

You might want to service that trim unit though. Have you bench tested it to see if it runs?

So essentially an engine hoist to hold it. I am going to rebuild it before install. Repaint and test hydraulics. Installing a new motor in it. Can I bleed the hydraulics and put in new fluid?

 

[racerone]

Not sure if you have to remove motor from the boat.----Do you have the " thrust pads " that trim rams push on ?

 

[evinrude2323]

Not sure if you have to remove motor from the boat.----Do you have the " thrust pads " that trim rams push on ?

The two small metal rods? There are half circles on the notor that meet up with the position of these.

 

[evinrude2323]

 

[racerone]

Post pictures of the steel " thrust pads " that are bolted on your motor.

 

[evinrude2323]

Post pictures of the steel " thrust pads " that are bolted on your motor.

Not totally sure what those are but I’ll send a picture of underside of motor that faces transom

 

[saltchuckmatt]

Thrust pads.

Your T & T has three cylinders or rams. Big one in the middle tilts the outboard. The two twins are the trim rams. They are used to change the attitude of the boat. (Nose up or nose down). The engine has two little (nickel size) stainless pads that the two rams push on when the motor is tilted down to it's running position.

Look underneath....there either there or not. Someone could have painted them.

 

[evinrude2323]

Thrust pads.

Your T & T has three cylinders or rams. Big one in the middle tilts the outboard. The two twins are the trim rams. They are used to change the attitude of the boat. (Nose up or nose down). The engine has two little (nickel size) stainless pads that the two rams push on when the motor is tilted down to it's running position.

Look underneath....there either there or not. Someone could have painted them.

Copy. I see two small circles but no pads

 

[racerone]

You need to find the pads.-----That is why I mentioned it.----When you buy used from some suppliers you do not always get what you need.----Is this a 2 wire or a 3 wire motor ?----Do you have the proper wiring relays if 2 wire?----A solenoid if 3 wire ??

 

[evinrude2323]

You need to find the pads.-----That is why I mentioned it.----When you buy used from some suppliers you do not always get what you need.----Is this a 2 wire or a 3 wire motor ?----Do you have the proper wiring relays if 2 wire?----A solenoid if 3 wire ??

When you say I need to “find the pads” do you mean that my motor photos do not show pads? Like they are missing and I need to find replacements? Or my photos don’t show the ads? I’m confused a bit. And I don’t know about the wiring, I will have to do more digging and ask you guys another 45 questions and post 10 pictures to figure it out. I have never worked on a boat before so all the terminology is new to me. I have operated boats but the engines have been inboard and these are not my forte. I’m also not a mechanic so I’m just messing with this boat in my backyard and will either fix it myself or find someone who can. So please excuse me if my questions seem simple or stupid or they bother you. I do not really care and I am just trying to get this operating correctly without breaking the bank.

Explain to me:
how I’d find the wire number- 2 or 3
And
Do I HAVE spaces for my pads and they are MISSING? Or do I need to FIND the thrust pads and post pictures of them?

 

[saltchuckmatt]

I take your motor started out with no t & t? If so, yes you need other stuff.

 

[evinrude2323]

I take your motor started out with no t & t? If so, yes you need other stuff.

Alright I’ll look into it

 

[racerone]

???---The wires going into the trim motor , is there a blue and green ( 2 wire motor ) or a black , green and blue ( 3 wire motor ) ??---I believe my questions are very clear, read them twice if you must.--I can not see your motor.----When I read post #1 on this saga and now post #92 it makes me wonder ---Sorry.

 

[evinrude2323]

???---The wires going into the trim motor , is there a blue and green ( 2 wire motor ) or a black , green and blue ( 3 wire motor ) ??---I believe my questions are very clear, read them twice if you must.--I can not see your motor.----When I read post #1 on this saga and now post #92 it makes me wonder ---Sorry.

No worries. I will get this all sorted out. Just going to take some time. Thanks to all for the help