The trim system on Johnson / Evinrude outboards, like most other engines, is a self bleeding, enclosed system. Run the unit through the complete cycle, all the way down, and then all the way up once or twice. As you open the fill plug, you should hear any trapped air escape through the fill hole. If fluid is present at the fill hole, the unit is full, if not, fill to level and replace the fill plug. Also, the air bubbles in the areated fluid will settle out by letting the unit rest for a while. Repeat this process until the system runs smoothly through the complete cycle, and the oil reservoir remains full.
1978
An Evinrude outboard, model number 35853R, would be a 1978 model, 35 hp.
50:1
1978
The 1978 model, 88 hp Evinrude outboard requires a 50:1 ratio, one pint of 2 cycle oil, to six gallons of fuel.
Young Bleed was born on 1978-03-25.
1978
A 15804b is a 1978 motor.
1978
No difference whatsoever .... zero ... nada ... zilch !
This part No. 304781 is only a cover found on 18-25 HP motors late 60's to about 1978 models. This is not a serial No. of your motor!
On the front brakes you will see the caliper on the backside of it it will have a small valve that looks like a grease fitting. Remember it is the one on the caliper it self. Get someone to bump the brakes up tight. Once they have them tight hold the brake pedal down. While the brake pedal is held down use a wrench to brake the bleedervalve lose. once you do look for bubbles in the fluid. repeat intill bubbles are gone. Same way on the backs.