Chrysler 70 Magnapower 70 707HE

Isa4325

Petty Officer 2nd Class
Joined
Oct 7, 2017
Messages
121
I know this outboard is a two stroke using a 50 to1 oil/gas mixture but isn't there still oil in the engine lower case? No filter, no drain plug, I can't find anything that I would consider lower engine case oil or filter.
Am I missing something here? Does this thing get lubricated from the oil/gas mixture?
 

Nordin

Commander
Joined
Jun 12, 2010
Messages
2,424
There is a drain/fill plug at the bottom of the LU and a level plug at the area just above the cavitation plate.

DO NOT LOOSE THE SCREW AT THE LU BULLET.
This holds the shift york/fork and if you do it you will have to disassemble the whole LU to put it back.

The LU shall have gearlube SAE 80-90 or equal. Not with EP additive, because it will affect the bronze bushings.
 

jerryjerry05

Supreme Mariner
Joined
May 7, 2008
Messages
17,923
Your 1972
The crank, bearings and the piston walls get lubed from the 50-1

NO other oil in the top of the engine.

​NO filter other than one in the fuel pump, unless someone has installed one in the fuel line???

​Like Nordin said the lower unit where the prop is has oil/gear oil.
It has a slotted screw on the side of the gear case.
DO NOT REMOVE!!

The drain is on the bottom.
​It could have a plastic washer to seal it??
Replace when changing oil.
Use Mercury seals.
80/90 gear oil.
 
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