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Johnson 6hp model 6R710 need details

Bought this motor with 12 ft boat need to know how to check its ok

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  • ray gallant Apr 23, 2014

    fix a small barrel for a test aut t run slow then possibly you can get by without .king the prop off band try it out . some require

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Basic check for any outboard: check compression in each cylinder, should all be within 10% of the lowest reading. With an air gap spark tester check spark. Your 6 HP spark should jump a 3/8" gap, blue crisp spark is good, yellow weak. Check gear lube with the motor in a verticle position, prop end down, unscrew the drain plug at the bottom of the gear case. Let a couple of drops out. Should be clean gear oil. If old it might be black and have a strong odor. There should be no water or metal filings. If it is milky there is water mixed in with the oil. If all checks ok run the motor. It should run smooth, no knocking and the cylinder head should be about 120 degrees. That is uncomfortable to keep your finger on but not so hot you cannot touch it. If it is too hot or too cold it can cause problems if run. Too hot will cause problems very soon, too cold will cause problems over time by building up carbon in cylinders and causing piston rings to stick.

Hope this helps.

Posted on May 08, 2014

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SOURCE: tryng to drop gear box off 6hp johnson how to?

If you are talkinh about unhooking the shifting rod from the lower unit, it might be behind a small plat held on with 2 screws on the side of the motor towards the bottom (casing that the lower unit dropped out of) or look uo in the housing , you should see how it is connected, usually a small bolt

Posted on May 03, 2009

oldfishead
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SOURCE: Shifter jumps out of forward gear on 64 9 1/2 hp Johnson motor

sound like the shift fork, or fwd gear is damaged in the lower unit.....special tools are required for this repair .....if you got them cool, if not seek a shop for further assistance.......hope this helped...GL

Posted on Jul 06, 2009

Editor925
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SOURCE: oil mixture for a 70 hp Johnson boat motor?

If it is a 2-stroke motor than gas:oil ratio should be 50:1

Posted on Sep 04, 2009

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SOURCE: 6hp Johnson outboard stalls & quits

go to an auto parts store and get a can of gasoline additive called seafoam. Read the label so you know how much to add to your 6 gallon tank. This stuff works wonders on outboard motors.

Posted on Sep 16, 2009

  • 45441 Answers

SOURCE: i need to change a water pump on a johnson 6hp

unbolt lower unit and you will be right there . shift rods vary so check where it is and how to unhook.

Posted on Apr 25, 2010

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