Re: Mariner 135hp chasing info please
That would be really good if it was a kit
As you can see on the boat its planned for we really need a standard long leg not a xxl one.
As for the pump well it did fail and the guy said it did damage to pistons or something, but he spent many $$$ fixing it and assured us it's working 100%. He said he had receipts for AU$2500 worth of work but I forgot to grab or see them.
I bought it just the other day for AU$500 with forward controls and guages. I haven't started it or anything yet. My dad has worked on the old blue band mercs before but never anything this new. He isnt a marine mech or anything he just knows stuff about stuff
We plan to mount it, then try to start it.
Can you suggest anything I should do before attemping to start it? Aparently its been sitting for a while.
There are several excellent posts on here about how to bring a dormant motor back to life.
Essentially, you don't want to try to start it to begin with. Because I really work hard for my money I tend to go a tad further than most would. Mind you this is probably a lot more than may be minimally necessary but it will ensure you don't damage an otherwise good engine.
I would first pull the heads and spray the cylinders with what is known as fogging oil. You can buy it at most good marine stores. I'd then gently rotate the engine and re fog as necessary to get a good coating on all the cylinders. If the engine turns easily and the cylinders all look good then I'd put new head gaskets on it and put the heads back on. I'd then pull the carbs and fuel pump and rebuild them.
At the same time I'd do exactly as was mentioned before. I'd replace all the filters and fuel lines and I'd test the bleeder check valves replacing any that were not working properly. I would get rid of the advance module or idle stabilizer (which ever yours has) if they haven't already been removed. These have been known to be deadly to these engines and Merc no longer sells them. Check all the other electricals paying special attention to the wiring that runs over the top of #1 cylinder. This is a failure point if #1 gets hot the wiring coverings have been known to melt through and can short out several components.
If all that is good then run a compression test to determine if your cylinders rings are in good shape. Compression on this engine should be around 110 lbs. These engines have compression relief ports in the cylinders and the heads are pretty fat so they don't make very high compression. Put new NGK BU8H spark plugs in it. And do a link and sync procedure according to the manual. Set the inital timing to about 4 deg ATDC and the max WOT timing to 19 degrees. You can bump it to 20 after it's running well.
If it all looks good, mix up 2 gals of high octane fuel at 35-40:1 (about 3.2 oz of oil to 1 gal of fuel) and add 4 to 6 oz. of Sea Foam. Put the fuel hose in the gas can and pump the primer bulb until its hard. Trim the motor all the way down and if your not at the water, connect a hose to the engines water intakes in the lower unit using a set of ear muffs that you can buy at your local marine shop. Turn the water on and adjust to a medium pressure.
Make sure your saftey lanyard is in place, turn the key to run and push in for 5 seconds to prime/choke the engine. Position the throttle in the neutral run position just slightly open and start the engine.
The engine will run fuel lean on this mixture so don't rev it over 1500 rpms during this phase. Run the engine for 15 minutes, then let it sit for 15 minutes and then run it again for 15 minutes. It will smoke a lot and probably idle rough but that's is to be expected.
If it feels like its ready, run the engine on a proper 50:1 fuel mixture (2.6 oz of TCW3 rated 2 cycle outboard motor oil per gal of fuel).
Like I said in the beggining, this is probably excessive by many folks thoughts but it will ensure that your engine is ready to be run after a long snooze.
Don't forget that water pump...
Hope this gets your going.. I know it's summer there and your itching to get that boat out on the water but take your time and you won't find your boat powered by a paddle.
Steve
