Need to know how to change lower unit on 1971 johnson 25 hp motor

I found a mixture of sites for the information
one owner of a 1998 25 hp evinrude says that it is a 2 stroke with a fuel mix ratio of 50:1 as 25:1 is a bit smokey
another site says that the recommended octane fuel rating is 87 although it might run better on 91
best advice is to find an evinrude service dealer and get the right information as the later 25 hp units are etec engine which will be 4 strokes

Oct 23, 2015 • Clymer Evinrude/Johnson 5-70 Hp...

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Why is my 1975 johnson 25 hp shifter getting stuck?

Be the first to answer May 20, 2014 • Boating

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1answer

I have a 1998 Johnson 130 hp outboard motor. Have already taken lower unit off but can't get it apart. Is there a secret to taking the lower unit apart? I would like to have a diagram.

Here is a site where you can purchase the service manual to repair your outboard motor:
http://www.tradebit.com/G/manuals/-/0-0-johnson+130+hp

Jul 13, 2011 • Computers & Internet

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I have a 1971 85 hp joahnson outboard that is getting fuel but no spark from the plugs it cranks over but no spark... any ideas???

What you have is a bunch of parts that you need. There are very few repair shops that would consider the repair. Being an employee many years ago of such parts....Try googling, Antique motor parts/ johnson. or elaborate as OMC / Evinrude/Johnson. You can still find a parts guy that can help you (very rare) search the web and hope it turnes out Okay! BeeCee

Feb 15, 2011 • Boating

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Where does the water exit a 1971 25 hp evinrude? how do I know it's pumping water?

I do believe the water jets are down on the lower unit by the prop. There should be a white swirl of white bubbles shooting out.

Apr 16, 2010 • Light Outboard Motor Boat Bass Fishing...

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1971 125els71c johnson stuck in forward

Try taking the shift cable off and just work with the engine. Right now you don't know if the shifter on the boat is stuck. I would then pull on the motor lever to the neutral side and grab the prop(take wires off sparkplugs) and try to turn the prop backwards. If that fails see if the shift rod is jammed under the cover. You may have to pull the lower unit, but you want to know if the shift rod is the culprit or the internal gearbox.

Jun 06, 2009 • Boating

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Ian Summerfield

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Posted on Jul 01, 2010

Ian Summerfield

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Put into nuetral,undo the five bolts around lower unit,take off sideplate halfway down leg casing,loosen the two bolts clamping the gear rods together,then lower unit should slide down[if driveshaft isnt stuck in the crankshaft spline].assembly is reverse,but take care putting water tube back into rubber grommet,and tighten gear rod clamp only after making sure that g/box is in nuetral,when gear lever also in nuetral,or matched together

Testimonial: "thank you so much for you help on the johnson 25hp lower unit . without your help we never could have done it. it is put back together and works great!!! keep up the great work. mamawhughes"

Ian Summerfield Jul 05, 2010

Thank you so much for being happy and responding with praise.its nice to know some people appreciate help,or advice.I dont get paid for this,just like helping appreciative people.hope you have no more problems,and a good life

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Need to know how to change lower unit on 1971 johnson 25 hp motor

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Ian Summerfield

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Why is my 1975 johnson 25 hp shifter getting stuck?

I have a 1998 Johnson 130 hp outboard motor. Have already taken lower unit off but can't get it apart. Is there a secret to taking the lower unit apart? I would like to have a diagram.

I have a 1971 85 hp joahnson outboard that is getting fuel but no spark from the plugs it cranks over but no spark... any ideas???

Where does the water exit a 1971 25 hp evinrude? how do I know it's pumping water?

1971 125els71c johnson stuck in forward

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Outboard Motor Boat Bass Fishing Saltwater Base

Is their a Manual for a Johnson 1987 25 HP outboard motor?

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Related Topics:

Need to know how to change lower unit on 1971 johnson 25 hp motor

1 Answer

Ian Summerfield

Add Your Answer

Attachments: Added items

Related Questions:

Is their a Manual for a Johnson 1987 25 HP outboard motor?

Wher can I down load Evinrude light twin 4HP boat motor service & repair manual

I have 1988 48spl evinrude boat motor and I need lower gear case does anyone know what years and horsepower will work I know that Johnson motors are the same mine has small housing 20in driveshaft

My starter motor got stolen and I'm having trouble finding a starter , or a part # , , , can you help? The motor is a 1971 Evenrude 18 hp , model# 18103S

I have a 1998 model E25RMECA I NEED TO KNOW WHAT TYPE GAS TO USE IN IT. AND IF IT IS 2 CYCLE OR 4CYCLE.

Why is my 1975 johnson 25 hp shifter getting stuck?

I have a 1998 Johnson 130 hp outboard motor. Have already taken lower unit off but can't get it apart. Is there a secret to taking the lower unit apart? I would like to have a diagram.

I have a 1971 85 hp joahnson outboard that is getting fuel but no spark from the plugs it cranks over but no spark... any ideas???

Where does the water exit a 1971 25 hp evinrude? how do I know it's pumping water?

1971 125els71c johnson stuck in forward

Not finding what you are looking for?

Outboard Motor Boat Bass Fishing Saltwater Base

Is their a Manual for a Johnson 1987 25 HP outboard motor?

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