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1981 EVINRUDE OUTBOARD PROBLEMS 2EA

D

DOSS3M

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PLEASE HELP'
I HAVE A 1

PLEASE HELP'
I HAVE A 1981 EVINRUDE 70 HP 3 CYLINDER THAT LEAKS WATER FROM AROUND THE LOWER UNIT ATTACHED TO THE UPPER UNIT; HOW CAN I FIX THIS BEFORE SOMETHING BLOWS OR IS THIS PROBLEM NORMAL?..

(2ND) THE MOTOR IDLE GREAT BUT WHEN 1ST TAKE OFF THE MOTOR HESITATE FOR ABOUT 3 SECOND AND THEN IT RUN GREAT. I CHANGED THE SPARK PLUGS NO HELP.

THANKS IN ADVANCED
 
"Doss.... The water leak creat

"Doss.... The water leak creates no problem. That's a metal to metal seating surface that uses no gasket, and in time it will seal due to salt etc. However, in place of a gasket, we use a substance called "Marpox 1000". Note that Marpox makes other sealers... use only the #1000.

Lossen the lower unit bolts just enough to drop the unit about 1/2" (you don't need much room for this). Make sure the surfaces are dry. Now, simply apply a bead of the Marpox 1000 sealer all the way around the unit. Let it sit for a few minutes, then bolt it back up. That substance will cure in about a hour and should cure that problem.

The hesitation would be due to either a sticking timer base (under the flywheel), or a slightly clogged carburetor. Be sure to spin the prop if you put the engine in gear when doing this..... ENGINE NOT RUNNING.... take the hood off. watch the timer base while you have someone apply throttle. The timer base is attached to the vertical throttle arm located on the starboard (right) side of the engine. If the timer base sticks slightly, it is probably due to one of the four (4) clamps being too tight that retain the nylon ring which secures the timer base.

If the above is okay, I would then suspect a clogged carb. Let us know if this was of any help to you.

Joe
"
 
" Joe:

I have a '74 50H

" Joe:

I have a '74 50HP Evinrude Larker twin, with a similar problem, it idles OK but when accelerating it hesitates, and usually takes a several seconds to rev up at all. Should I also suspect dirty carbs and/or sticking timer base?? "
 
"Astrong..... Yes, I would giv

"Astrong..... Yes, I would give you the same advice pertaining to the timer base. On the carbs, remove the face plate, at the bottom front of the float chambers you will see a 7/16" hex head bolt that also has a screwdriver slot in it. Disconnect the fuel line first, then remove those screws to look at the back of them. If their're coated with a gum like substance, discolored bad, etc... the carbs are no doubt fouled. However, before dismantling them, using a straight piece of single strand wire, insert it into that opening and try to clean out the fixed brass high speed jet that is in there near the center of the carb. That may cure your problem, but if not (and the carbs are indeed fouled) you have no choice but to remove, dismantle, and clean them.

Joe
"
 
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