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The Best of The Outboard Wizard's Technical Help & Tips
Outboard Engine Service, Repair and Maintenance Help and Tips. OMC - Bombardier Evinrude, Johnson, Cobra and more.

The Best of...Outboard Owners' Questions with Answers
By The Outboard Wizard - Lindenhurst Outboard Inc.

(Page updated frequently. Come back soon for more new and interesting outboard engine information).

Advanced Technical Help - Johnson Evinrude OMC Outboard Engines.
Milky Gear Case Oil - October 2006
Question: I have a 1956 Evinrude Fleetwin 7.5 hp outboard that is in good condition and runs fine but the gear case oil is milky. The owners manual does not address this.
Is this a problem? Is a repair necessary? Are the parts available? Also how much and what kind of oil should I add to the gas?
Thanks, AD
Answer:

Hello milky oil is usually water mixed with oil. The ultra hpf or xr gear lube is designed to compensate for water in oil and is what I use. The seals can be checked by pressure test or vacuum test to 15 lbs. If oil is left to sit water will separate and go to bottom of gearcase. On small leaks check drain plug seals or propshaft seals for fishing line. Ralph, Certified OMC Bombardier Mechanic and Dealer.

? If Motor in Slow Mode, RPM's Drop, Motor Shakes - October 2006
Question:Hi there I have a Johnson 91 VJ200sleid When I first start out the boat will climb out of the hole very fast and plane nicely after a short time the RPM's drop and the motor shakes and wont power up over I will say over 2300 RPM's, I have replaced power head fuel pump power pack timing base plug es Primer bulb. and primer check valves and hoses.after it sits for ten or fifteen minutes shut off . I can start it up and jump on the gas and it will climb out of the hole and go like crazy for a few minutes and do the same thing over again.
Is this motor going into slow mode and why?
Thanks D.R.

Answer:
Hello sounds like engine is in slow mode. try disconnecting tan leads at cylinder heads to see if engine runs over 2500. You will also need to verify if warning horn works as it should sound when engine activates slow mode. 10/2/06 Ralph, The Outboard Wizard

10/6/06 Follow-up from Member D.R...I would like to say Thank you Outboardwizard for the lead in the direction of the temp sensor that was my problem the whole time. I replaced both sensors yesterday. I took the boat out today and it run like a dream, Climbing out of the hole like a shot. I've had this boat in the shop three times and the mechanic told me he fixed my problem each time. 1500.00 bucks later i fixed it myself for 110.00 dollars. Boy did they see me coming. Monday Im gonna have a long talk with that guy. I am sure he don't know what he's doing. For sure. What a great Forum you guys have going. Thank You very much. D.R. 10/6/06

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