HELP! newbe with a 1972 evinrude 85hp

[ssmtyper]

Hello all! So I am super new to boating, I just bought my first boat< 1972 larson with an 85hp evinrude. I would love some of you guys input and guideance... I am a pretty decient auto mechanic (i think so, lol) HOWEVER, I have NO experience with 2 strokes or boats in any way! So I have some questions, and If you dont mind please answer them as though I am completely stupid... I am kinda partcular and love to know all the tiny details

A little about the boat: It has sat, as far as I know for about 2 years, I was told by the guy I bought it from it ran great the last time he took it out a couple summers ago. (pretty reliable source, he is a friends uncle)

I just picked it up and being that I am an auto mechanic I want to make sure this thing is ready to start the first time I turn on the key...

I will be buying a new battery tomarrow as there isnt one in it now... on to my questions...

1. fuel/oil mix is 50:1 right?
2. what exactly is 50:1? 50 gal of gas to one quart oil? or what?
3. is there engine oil to change? if so where is fill/drain?
4. what and where should I lube/grease
5. I live in NM (desert) small town, will O;reilly have proper fliuds/grease
6. should the engine be "down" when I run it(trailer has support holding up)
7. what is the compression ratio?
8. what is the compression test "good" range?
9. should I wd40 the throttle cable and steering, or bad idea(if bad idea why?)
10. ANYTHING elses you think I should know... please

P.S.> I orderd an original manuel (waiting on it to come in).... ALSO I ordered the "ear muff" waterhose thing to run on the trailer, (waiting for that too)....and I did search "awakening a sleeping engine" couldnt find much...


I really appreciate any help and info...

not trying to be a pain but I dont like to be sorry I didnt DO/Know something after something breaks...

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

THANK YOU!!! thanks for making such a detailed and lengthy reply your time is apperciated and your knowlege is well recieved and will be put to use...

Thanks again!

any other comments/suggestions are welcome, like I said, I am very new to this whole "world" of boating, If you assume I know it already, your probly wrong please inform me... lol

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

"WD40 cleans bicycle chains!" LOL, True!!! hahaha

 

[eavega]

Re: HELP! newbe with a 1972 evinrude 85hp

Welcome!

Make great haste to orileys for some GL-5 lube. Plug her into the drain hole and squeeze till it comes out the vent hole. Plug vent hole, pull out (worst birth control ever!) lube, hurry like he!! and put the drain screw in.

1972, is it the electric shift? If so, you should only be using Type-C lube for the lower unit.

Hydro Electric Shift)
(J. Reeves)

The shifting setup of the lower unit is what's called a "Hydro Electric Shift", which is quite complex consisting of voltage being applied to solenoids in the lower unit which in turn change oil passages via a oil pump that supplies various pressure on a spring loaded shifter dog. The wires leading to the lower unit (at the powerhead) are "Green" and "Blue". The engine must be running or cranking over in order to shift out of forward gear.

You CAN NOT use HI VIS lube in that lower unit. You MUST USE what OMC calls "Premium Blend" lube, commonly called "Type C". (A thinner lube)

In neutral, you need 12v to the "Green" wire.
In reverse, you need 12v to both wires, the "Green" one and the "Blue" one.
In forward, there should be no voltage to either wire. (The spring loaded shifter dog forces the unit into forward gear)

To check the lower unit for proper shifting to make sure you have no trouble there, remove the spark plugs to avoid problems and to allow a higher cranking speed.

This next step eliminates the actual shift switch in case problems may exist there.... Disconnect the blue & green wires at the knife connectors (the rubber insulated boots) leading to the lower unit at the powerhead, then using jumpers, take voltage direct from the starter solenoid to apply voltage to the "Green" wire for neutral, then both wires 'Green" & "Blue" for reverse (Remember the engine must be cranking over in order to shift).
With no voltage applied, the unit should be in forward. No need for a ground jumper... the lower unit's already grounded. You may crank the engine with the key switch or by energizing the starter solenoid with a jumper wire.

 

[ezmobee]

Re: HELP! newbe with a 1972 evinrude 85hp

A '72 should be an electric shift so as mentioned above, use to correct lower unit lube.

 

[garzilla]

Re: HELP! newbe with a 1972 evinrude 85hp

I'm a rookie too, one thing I've heard a lot of is when using the muffs....careful not to over trev the motor.

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

ok so I need to ditch the GL-5 and get type-C, but same drain/fill procedures.... (I already bought GL-5, but didnt use, should I return for type-c, or keep the GL-5 for a diffrent part of the boat and buy type-c in addition?)

change impeller... difficulty level of changing impeller?

and take it easy on revs whether muffs or tub...

thanks everybody, keep 'em comming....

 

[eavega]

Re: HELP! newbe with a 1972 evinrude 85hp

With regards to filling the crankcase with oil, my suggestion to you would be to get yourself a pump. They are fairly cheap and available at your local Wal-Mart (or right here on iBoats)since it really cuts down on the mess and effort to change out oil.

You can put the motor on muffs, and you can put it in gear, but I wouldn't run it past a fast idle (1000 RPMs) with no load. In a barrel is better, but make sure you have a way to keep water flowing into the barrel if you put it in gear. The motor will push all the water out of the barrel in short order. Make sure your lower is in the water deep enough so it is able to pick up water.

As to basic checks of the motor, there is a "Top Secret File" at the head of Repair and Maintenance" section that will walk you through awakening a sleeping outboard ( http://forums.iboats.com/showthread.php?t=158086 ) . Basically you check for compression (even and within 10% on all three cylinders), spark (Using a spark tester, jump a 3/8" gap with strong spark), and fuel (from tank, through fuel pump, and filling carb bowls). You might also want to drop the lower and check the impeller or better yet, just order a new one and replace it. Its something you should be doing every few years anyway so you might as well start the clock now.

Once it starts and runs, you will need to verify that the push-button shift is working correctly (motor has to be spinning to actually change the direction), otherwise the troubleshooting for the gear shift mechanism is posted above. You also want to verify that the overheat horn is working, and that the motor is not overheating (if it is, you need to check the thermostat). Lastly you may want to verify that the charging system is working on the motor by noting the voltage at the battery with the motor running (should be in the 13 V to 15 V range). If you have the OEM manual on the way, that should contain enough information to troubleshoot and remedy any deficiencies you may find by doing these basic checks.

My personal last step would be to do a decarb (another procedure found in the FAQ's) and get it out on the water for a real test.

Good luck.

-E

 

[patrick4266]

Re: HELP! newbe with a 1972 evinrude 85hp

I have changed the impeller several times on that motor. It's a little tricky due to the electric cable. I did it by myself but it's best to have a helper. If you do it send me a private message and I will give you my number and tell you how to make it easier.

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

Can someone tell me where the heck to get "type C" lube from.... I have gone to a few local parts supplyers asking for type c and they look at me like im nuts>>>> does this stuff go by a different shelf name?

and I would love to know any "tricks" to make changing the impeller easyer, I will order the mpeller tonigh and once it and my original manule get here I will be tackling that....

THANKS!!!!!!!!

 

[eavega]

Re: HELP! newbe with a 1972 evinrude 85hp

Can someone tell me where the heck to get "type C" lube from.... I have gone to a few local parts supplyers asking for type c and they look at me like im nuts>>>> does this stuff go by a different shelf name?

Its also called "Premium Blend Gearcase Oil". Its thinner than the high viscosity (90W) oil you use in mechanical shift gearcases.

You should be able to order it right here on iBoats. Search for "Type C Gear Oil"

-Rgds

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

i was hoping to find it locally but I suppose I will order here along with the impeller... next question is how much type c will i need to fill the case?

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

also "sierra" or "mallory"?

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

here are some more "dumb" questions i thought of:

1. is there engine oil that needs to be changed? if not why not? (like i said I know nothing about 2 strokes and beeing acustomed to automotive engines not having engine oil seem scary)

2. how would I know if the engine were overheating, or had low oil presure *** there are no gauges on the "dash" for these sorts of things? I heard there is a buzzer? if so is there a way to make sure its working?


thanks very much in advance.....

PS.. you people on this site are awesome!!

 

[bonzoscott]

Re: HELP! newbe with a 1972 evinrude 85hp

There is "NO" engine oil in the crankcase on a 2 cycle motor. The engine is lubricated by the oil you mix with the fuel. As far as changing impeller and other things, Google "Shop2evinrude". There you can get exploded views of all parts (with your engine model#). That may help you.

 

[eavega]

Re: HELP! newbe with a 1972 evinrude 85hp

2. how would I know if the engine were overheating, or had low oil presure *** there are no gauges on the "dash" for these sorts of things? I heard there is a buzzer? if so is there a way to make sure its working?

There should be an overheat alarm inside the remote control. It attaches back to a temperature sensor inside the power head. To test, find the brown wire with the knife connector going into the cylinder head. pull back the insulator sleeve and disconnect the knife connector. With the motor running (I am not sure if this works with just the key in the ACC position), ground the wire going to the remote control. You should get a buzz in the remote control.

Now, that doesn't guarantee that the temperature sensor works, but it does guarantee that the horn works.

Rgds

 

[ssmtyper]

Re: HELP! newbe with a 1972 evinrude 85hp

OK so I got it fired up, seems to run really great.... only let her run for bout 10-20 seconds as I havent installed the new impeller yet(wanted to make sure it at leased fired up before i went throgh the trouble). I did check forward and reverse and both seem to operate correctly.

So its on to change the impeller, and get it out on the lake to see how she does on the water, then winterize and wait till next summer lol thats what I get for buying a boat right before winter I guess... I will be redoing the upolstery and carpet over the winter though