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    Gas - Oil Mixture on old Evinrudes outboards

    As Chris1956 says, engines with bronze bearings in the connecting rods to the crank shaft need 24:1 mixture, engines with roller bearings go for 50:1. I think but might be wrong, when OMC used dual line fuel hose for the fuel tank (pressurised tank) the mixture has to be 24:1. I think they...
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    1990 Force 120HP carbs mix adjustment help

    Have not looked at the wideo cause I can not and will not login to drop box. Pulling the plugs and put the drives in forward gear and then compare how hard it is to turn the flywheels may give you some clue. But you are turning the impeller too and depending how flexible the impellers are it...
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    1990 Force 120HP carbs mix adjustment help

    Hard to say when not have the engine to look at. But I think you problem are in the LU. The pinion gear have to have right play/back lash. Too tight the pinion gear will press at the forward and reverse gear. But as it idles in neutral at 800 RPM and the press are at the F and R gear even in...
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    1990 Force 120HP carbs mix adjustment help

    The prop shaft endplay and the backlash for the pinion gear and forward/reverse gear are important. Too tight or too loose will damage the gears eventually. Is the engine idling well in neutral (700-800 rpm) and not stay in idle in gear at 700-800 rpm?
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    1990 Force 120HP carbs mix adjustment help

    I have never change a rectifier/regulator but I think you can used both if both can manage the charging amperage from the stator. If your stator output amperage is 16A use one that manage at least 16A or more, if the output amperage is 7A choose one of them. I am a senior...
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    1990 Force 120HP carbs mix adjustment help

    I would say every adjustment more than 1 turn out of seated are acceptable. But of course not to much as too rich adjustment will foul the plugs. Leaner adjustment... better idle, BUT too lean the respons when doing a "hole shot" will end up with it hesitate or die. Some Chrysler/Force engines...
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    Milky fuel in carb intake force 85hp

    Follow the Master Tech information about breaking in period. I run 3-4% (33:1-25:1) oil mixture when breaking in a rebuilt engine. Has worked out well all the time. Use good quality TCW3 two stroke oil. Then I have always mention in this forum and it applies to a newly rebuilt or a not rebuilt...
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    Low compression Suzuki OB: 105...105.... and 65

    As Faztbullet says, maybe a Suzuki. BUT why does the thread call for a Johnson if isn`t a Johnson!!! The only two stroker OB with white color power head are Johnson or Suzuki. BTW This engine needs a major restore, that bottom cylinder and piston is toasted.
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    Remove throttle and shift cable from Force 85 hp outboard

    As mention above, offset screwdriver, a smal welding pliers or some other typ of pliers that will reach down to the screw.
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    Starting an 57 Evinrude 7.5 fleet win after many many years of storage.

    Do as racerone says, check for spark and if it jumps at least 1/4 in in atmosphere. Pull the flywheel and check the coils, it is common on old OMC with magneto ignition that the coils are cracked and roten. Clean the points and set the gap at 020.
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    1990 Force 120HP B model cannot seem to find the issue with sporadic no start

    Yes you can test the coils on the engine. The coils should jump a gap of 3/8 in or more in atmosphere. Spec. OEM stator 680-800 Ohm, output voltage 180V DVA or more. CDI stator 300-400 Ohm, output voltage 180V DVA. Triggers 48-50 Ohm , output voltage 0,5V DVA or more. CDI-box output voltage to...
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    Looking for some help

    I would use it, but oils are a HOT subjects at forums. I use gear oil for car gear boxes if it is EP SAE 80W-90 in my OBs. But if the gear case in the OB has red metals in it such as brass/bronze bushings you should be careful not to use EP gear lube. They "eat" up the red metals.
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    Mercury 85HP Thunderbolt Ignition Series??? Whats missing??

    "Blue ribbons" Mercury started in 1972 and your engine is a 80Hp with 85Hp decals. In 1973 they were rated as 85Hp up until 1977, then i 1978 80Hp again. 1972-1975 had battery feed thunderbolt ignition system with a distributor, in 1976 and up they were equipped with ADI ignition. Master Tech...
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    Exuast backfires 1976 25hp evinrude

    Have you checked the cam ring? The flywheel key orientate the cam ring, if the cam ring and flywheel not lining up right it can back fire and would not run. Have to ask too, are the HT wires at right spark plug?
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    1999 Force/Merc 75HP 3 Cylinder 2-Stoke Rough Running Issues

    Seams odd to me why the carbs not can be cleaned. OEM there is a WB-135A Walbro carb for top cylinder and WB-139A for middle and bottom cylinder. You can pull main jet, main nozzle, idle mixture screw and welsh plug from the carbs and the welsh plug is stock at various websites. Put the carbs in...
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    1976 25hp evinrude flywheel problem

    Different flywheels cause different ignition system. 76 has the low tension system with points and a drive coil under the flywheel. 78 has CDI ignition with a power pack. Sensor coil and a charge coil under the wheel.
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    4hp Extension Gasket

    As racerone says no gasket. That gasket #30 is shown as #38 in diagram exhaust housing as you pointed out. It is for the exhaust housing mounting to the lower pan.
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    Mystery engine

    Yes, agree but the 2 cylinder 40 and 50Hp had VRO. I have converted some 40 and 50Hp with that kind of fuel pump. You are able to put that pump at a 35Hp too.
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    Mystery engine

    I think those fuel pumps with a hose fitting to the pressure port is a retro fit pump if you convert from VRO to regular premix system. The VRO pump take pulses from the crank case with a hose connected to a fitting at crank case.
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    Looking for some help

    Have all pedals at each V-block a gap of 0,010 in or just some of them? The pedals should close completely to the mounting V-blocks, some can have a slight gap. 0,010 in gap sounds to much in my opinion, 0,003-0,005 in (0,07-0,10 millimeter) would be acceptable and at some of them. I use a flash...
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