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20.04.2021 22:34:28
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See full version: How to rebuild a mercury outboard motor
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If your old Johnson, Evinrude, Mercury, Mariner, or Yamaha is giving you trouble, it might just need a little love.
If your motor has a manual rope-start (the so-called Armstrong System), it will likely benefit from a rebuild. Mounted on top of the powerhead, the recoil is exposed to a lot of engine heat, and also gets baked in the hot sun, especially under a black cowl. The lubricating grease gets old and waxy, and the entire mechanism can become polluted with dirt and minerals from the water. The rope itself will age and get stiff and become prone to breaking, usually at its end where it’s crimped around the spool or pulley. [links]
This fuel line is only about 10 years old, but feels stiff. Cut it open and it’s easy to see the inner liner is falling apart, probably from excessive ethanol exposure. This was a problem with the silver-colored fuel line used by Mercury and Yamaha a few years ago. The deteriorating liner will restrict fuel flow and particles can break loose and contaminate the fuel filter or the carburetor. more
I will most definately look at these things before having a rebuild done. So if the head does not sit completely flat on a sheet of glass, it's bad? here
I torqued the head bolts in the pattern shown on the owner's manual and to the manual's spec on torque. here
Then you will have an idea about whether or not you're game for the powerhead. It's not too bad with the right tools and a shop manual, which is quite complete. The first step after a powerhead teardown (keep the parts organized, as bearings, connecting rods, etc. need to go back exactly where they came from) is too assess the nature of the damage and why it occurred (or it will surely happen again, and not in 31 years). A decarb will often help a slightly low cylinder, but not a badly worn or scored one. The next step after teardown is to assess what's reusable and what's junk, then take the block to a MARINE machine shop for them to determine what oversize to bore to, then buy the parts and tell the shop what pistons you will use. Since you don't have any experience, you will need help in determining what to reuse.
If you can follow directions carefully, the process isn't that tough. An alternate is to buy a rebuilt block from a reputable rebuilder, where they do the most challenging steps for you.
Re: Just how difficult is it to rebuild an outboard?
IF YOU ARE ORDERING FROM OUTSIDE THE U.S., PLEASE CONTACT US FIRST so that we may send an invoice that includes shipping. here
For motors not listed, and motors under 20 HP contact us for the specific application. It is possible that we can provide the components you need. Feel free to ask us about your motor or purchasing any components of these kits. here
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We at East Coast OutBoard
would like to hope you want the best outboard rebuild for your motor so
Call East Coast OutBoard For your OutBoard Rebuild!
Some Motors may take longer if you have sleeve or block damage
Always ask first. [links]
EAST COAST OUTBOARD.COM LLC. more