79' 85hp lower unit phillips screw?

[JDHNWFL]

I am changing my lower unit fluid through slot sbrews and was wanting to know what the phillips screw is for. Cant find in my manual.

 

[jriegle04]

Re: 79' 85hp lower unit phillips screw?

http://www.crowleymarine.com/brp_parts/diagrams/33327.cfm it looks like a retaining screw from this part breakdown.

 

[JDHNWFL]

Re: 79' 85hp lower unit phillips screw?

Thanks.

 

[Vic.S]

Re: 79' 85hp lower unit phillips screw?

The drain and level screws are #53 and #45 in the parts diagram.

The philip's screw is the retaining screw for the pinion bearing. Do not remove it.

use new washers on the drain and level screws when you refit them.

If there is any water in there or if the old oil is milky then you have adefective seal somewhere which requires investigation and replacement

 

[kenmyfam]

Re: 79' 85hp lower unit phillips screw?

Do not mess around with the phillips screw !!!
Leave it alone.

 

[tashasdaddy]

Re: 79' 85hp lower unit phillips screw?

leave the Phillips alone, it holds the shift yoke.


Changing lower unit oil

There are 2 straight slot screw on the starboard side of the lower unit. Top is vent plug, bottom, drain and fill plug. ( do not touch Phillips head screw).

Remove the bottom plug, put container under lower unit, now remove the vent plug, while the oil is draining, replace the seals on the plugs part # 311598, buy several of these, ( they are a one time use item)

Walmart and many places sell a little hand pump. To use to fill the unit, you insert the tube into the bottom hole, and pump till oil reaches the vent hole. Install the vent screw, then remove hose, install the drain-fill screw, clean up mess.

The screws can be hard to get out, do not mess up the head. You may need to employ an impact screw driver to break them loose.

 

[Vic.S]

Re: 79' 85hp lower unit phillips screw?

leave the Phillips alone, it holds the shift yoke.

That is true with some models and replacing it if removed may mean a lot of work or good luck. In this instance the screw located at the bottom of the water intakes is, I think you will find , the pinion bearing retaining screw.