Help identifying Johnson Outboard

[molch]

Hi, I am trying to identify this motor. i have just bought the boat and was told it was an 87 model 115 v4 with the vro removed.<br /><br />I have since found the model# J115TLCSA and serial# 670263 on the mount and it is 1980. <br /><br />I also checked the starboard side of the powerhead and could only really find 325596<br /><br />Here is 2 pictures more can be supplied if these can help aswell.<br /><br />any help identifying if it is a 1980 or the tilt is off something else and the motor is newer.<br /><br />

<br /><br />

<br /><br />and this is an Aussie motor also.

 

[lark2004]

Re: Help identifying Johnson Outboard

On the back of the engine, between the heads, there should be an aluminium welch plug, what the Yanks refer to as a freeze plug.<br /><br />It will look something like this<br />

<br />That should have at least the serial number of the engine on it. Hopefully it will also have the model number. <br /><br />If it matches the numbers on the transom bracket, then yes, it is a 1980 model, and no, no-one has swapped the powerhead.<br /><br />The model number wasn't always stamped onto this plug on the Aussie made engines.

 

[molch]

Re: Help identifying Johnson Outboard

ok thanks i will check it out when i get a chance. so it is between the heads, from memory it was just a single plate on the back of the motor.

 

[Chinewalker]

Re: Help identifying Johnson Outboard

It is a 1980 with a later hood on it. OMC started painting their motor blocks black about 1985 or 1986. Also your motor looks to have the older style coils and powerpack set-up. They had modular coils by 1987 along with (I think) a single powerpack instead of two....<br />- Scott

 

[molch]

Re: Help identifying Johnson Outboard

thanks alot . atleast i have something to go by now. Is there anything I should look out for in particular on these motors? <br /><br />Compression showed up at 120-125psi on all 4 cyclinders.

 

[lark2004]

Re: Help identifying Johnson Outboard

those are good numbers.<br /><br />Do you know when the motor was last serviced?<br /><br />If not, then the water pump impeller is a good idea to replace. <br /><br />Since the motor is 25 years young, it would be a good idea to check over all the fuel hoses and make sure they aren't getting hard and brittle or cracking. Same goes for the wiring.<br /><br />Check the anode (the little fin behind the prop) under the cavitation plate to see if it still serviceable. It should have a white calcified appearance, but still have a good shape to it. If it has worn to a point where it looks very thin and pointed at the tip, then it is time to re-place it.

 

[molch]

Re: Help identifying Johnson Outboard

I have no idea when the motor was last serviced. First thing is there is a minor leak from the seals of the tilt. i was going to do this myself as it looks easy enough. also what else is required for a general service? it has new plugs should i replace Gearbox oil aswell? anything else?

 

[Solittle]

Re: Help identifying Johnson Outboard

Water pump, thermostats & gear oil. <br /><br />I would start out with a compression check. That will give you an idea of the overall health of the internals.

 

[Dhadley]

Re: Help identifying Johnson Outboard

BTW -- just to avoid confusion, the torque tab (little fin behind the prop) is not an anode on that motor.

 

[lark2004]

Re: Help identifying Johnson Outboard

my bad