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How do you change lower end oil in a 20 hp 4 stroke Honda outboard

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If you mean engine oil in the sump, remove the sump plug at the base of the sump.

Posted on May 20, 2017

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Posted on Jan 02, 2017

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I have a 20 hp mercury outboard serial#06082001.I want to know what year it is and if it's 2 or 4 stroke


If you drop the first zero it would put it at 1981.

http://www.themarinedoctor.com/msn.pdf

this site gives a different answer, as 1980- 81, so close. It SUGGESTS it is a 4 stroke engine.

http://www.boats.net/parts/search/Merc2/Mercury/25%20%282%20CYL.%29%282-STROKE%29%28International%29/parts.html

It is likely a 4 stroke, but I won't give you a definitive answer, due to the damage it can cause with a guess!

A four stroke running with two stroke oil will just smoke, but a two stroke with no oil will seize and leave you stranded on the water with a seized engine!

A four stroke engine has valves operated by push rods or a pulley and a chain, a two stroke just has a head. Take a look at the engine and it should be obvious.

For your first service, I would suggest you go to a marine engineer. Ask all the questions, and get the right answers. When I had my 1986 Evinrude serviced, i typed a list of questions and left the list with him. i asked him when I picked up the boat and wrote the answers down. The first one was 'petrol to oil ratio and which is the best oil'. A basic service will cost you a hundred bucks and you will have some comfort that you are unlikely to break down, 6 miles offshore with only a paddle :)

https://www.google.ca/search?q=20+hp+mercury+outboard+serial%2306082001&ie=utf-8&oe=utf-8&gws_rd=cr&ei=uwm-WKjHK6SUjwSApJLQBw#q=mercury+outboard+serial+number+lookup&*

Mar 07, 2017 | Mercury Boating

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Where is the oil filter located on a 2004 Yamaha outboard two stroke motor


Some links including a video of how to change the filter. In such questions horsepower is useful along with year :>) Oil filters would only be on a 4 stroke though to protect the engine oil. Your two stoke doesn't have filters in the lower unit. There may be a strainer in the two stroke oil tank.

check page 31 here
http://www.yamaha-motor.com/assets/service/manuals/1/LIT-18626-07-03_1415.pdf

Google
year make HP manual

http://www.bing.com/search?q=oil+filter+located+on+a+2004+Yamaha+outboard+two+stroke+motor&form=PRHPR1&src=IE11TR&pc=EUPP_HRTS

Jul 04, 2016 | Yamaha Yamalube Outboard Oil Change Kit...

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Do I use reg gas or a gas mix?


Matt, If engine is two stroke and not oil injected then yes you must mix 2 stroke oil and fuel. 4 stroke engine have a crank case which is filled to proper level with 4 stroke engine oil. Check the attached links,instruction and guides, Good luck
"I hope this helped you out, if so let me know by pressing the helpful button. Check out some of my other posts if you need more tips and info."
How to Decide Between Two or Four Stroke Outboard Boat Engine

4 Stroke Outboard Motor vs 2 Stroke Outboards

2 stroke outboard Vrs 4 stroke outboard

http://www.cottagetips.com/tips/boat-motor-gas-to-oil-ratios

Apr 15, 2016 | Boating

1 Answer

Mercury 1989 60 HP Outboard Motor manual to find gas to oil ratio


50:1 But if your doing mostly low rpm cruising (trolling) then you could reduce that a bit to 75:1 to help reduce smoke. If you do mostly mid to higher rpm cruising, then 50:1 (1 pint to 6 gallons. )
Or 200mls in 20 liters if your Canadian.

Feb 26, 2016 | Seloc Mercury Outboard Repair Manual, 1965...

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Water got into the engine oil of my 8 hp 4 stroke when on the boat only as troller


Water gets in your engine through the exhaust with the boat speed! Lift that engine when not in use!

Oct 16, 2014 | Mercury Marine 8hp & 9.9hp 4 Stroke...

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How do I set the timing on my Honda 7.5 hp 4 stroke outboard


if you havent moved the ignition plate etc then remove cam belt and put top piston to tdc and the cam pully to tdc ( mark on head ) refit belt and rotate engine by hand to check nothing catching then try !

Mar 07, 2014 | Boating

2 Answers

90hp 4 stroke suzuki outboard how do i reset the oil alarm?


TO RESET:
1. TURN IGNITION KEY ON
2. PULL OUT THE EMERGENCY STOP BUTTON 3 TIMES IN TEN SECONDS, A SHORT BEEP WILL BE HEARD IF CANCELATION WAS SUCCESSFUL. TURN KEY OFF AND PUT EMERGENCY STOP LANYARD BACK ON ITS BUTTON

Apr 11, 2009 | Sport & Outdoor - Others

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