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    89' Force 50HP low compression.

    Later Force engines had a tendency to brake piston rings cause the land for the top ring was to small. It could also be carbon build up at the rings. The rings could be stuck by carbon build up.
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    Startup procedure

    This sounds like a good start up procedure. Remember that OBs are different individuals, some engines need another start upp procedure. My youngest son has a 85Hp Force 1988 and he do the same procedure almost always. My rule of thumb is when warm do not use the choke at first. If it does not...
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    Force Chrysler 35 hp, pistons.

    Franz Marine is in Grandview Missouri, I think you mean Mastertech Marine, they are in Florida and has a lot of parts for older OBs.
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    55 hp Chrysler. Model 5551 has 3 piston rings

    As jerryjerry says the older 55Hp btw. also the 35Hp and 45Hp had 3 rings. I think about prior 1973-74 they had 3 rings. The head gasket was the same for a long time and you can not identify the year by what head gasket fits. To verify the year you need the model number, the serial number is...
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    Force Chrysler 35 hp, pistons.

    Vagelis try Franz Marine, he might have pistons and rings. Yes he is in the US so you have them shipped to Europe and I think he is the only solution for your engine.
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    '95 Force 120 - bottom cylinder not firing

    As you says it is a 1995 year model I think it has the Mercury Thunderbolt ignition system. Earlier engines had the Prestolite system (two blue or black CD boxes and four blue or black ignition coils). All these parts mounted on a plate at star side of the engine. The Mercury system has one...
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    '95 Force 120 - bottom cylinder not firing

    Start with checking compression and spark at all cylinders. Clean spark plug could be no spark issue, water intrusion in the cylinder etc. Compression should be 145-150 PSI but down to 120-125 PSI it will run decent. Most important is that the difference between the cylinders are not more the...
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    Force 125 lacking power

    Well as racerone says change the reed pedals, do not flip them over. BTW: I gave you the advise of checking the reeds i #29 post.
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    1971 Chrysler 20 HP Coil Wiring

    Impeller OEM partnr. is 436065 (new F436065 or F436065-2) and Mercury dealer will have it. Aftermarket Sierra 18-8903 and many website will have it.
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    Turn off engine, wiring diagram. Help!

    Vagelis I have send you the wiring diagram.
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    Street Fire Ignition controller instead of Magnapower II

    I have done some convert from Magna Power I ignition (the head of this thread is wrong. Magna Power II is a different system) to automotive typ ignition. It works great if you maintain the points regular cause the points is a part of the ignition in another way then in the Magna Power I CD...
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    Force 125 lacking power

    I have read through the whole thread and sometimes it is hard to understand what you have done cause every posts are a whole long sentence. Please use . and , in your post, much easier to read. Well back to your issue. You seams to have done most of the checking but have you looked at the reed...
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    1995 90HP Force Outboard Fuel Starvation

    Thank you pnwboat for the eminent explanation about the air/fuel idle speed settings impact at higher RPM and WOT. There are many folks that has questioned me about this theory and I have not been able to explain it. I asked Frank A about this a long time ago in this forum but he did not have...
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    Thanks to Jerry Jerry for all of his advice. Merry Christmas

    Jerryjerry I have bought pistons with rings from Franz Marine. Most of the pistons OEM and Wiseco brand. Seals are also available from Franz Marine and Sierra. For one of the blocks that I am going to restore in this winter/spring, I will try to use Vertex pistons. Have just order three pistons...
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    Thanks to Jerry Jerry for all of his advice. Merry Christmas

    Thanks all of you, I really appreciated to be mention on the list. I hope this pandemic will end up this year. I want to come back to ordinary life. Have use this Christmas and New Year leisure to put a 1975 75Hp Chrysler block together and put it in place. It has been bored, two holes 030 OD...
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    1971 Chrysler 20 HP Coil Wiring

    Stewart, I will take a look tonight under the flywheel of one of my 20Hp Chrysler an see where the grounding of the coil is situated. As I mentioned before both thin wires from the coil can not be attached to the points terminal. One should be and the other should be grounded. Otherwise you do...
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    1971 Chrysler 20 HP Coil Wiring

    There are four or five (I do not remember) screws that hold the magneto stator ring to the stator plate (timing plate). One of those has a wire for grounding the stator plate to the block at the fuel pump. Use one of those screws that hold the magneto stator ring to the stator plate or use the...
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    1971 Chrysler 20 HP Coil Wiring

    Stewart, the thin wires are the prime winding. One of them are the common wire for the prime and the secondary winding. The common wire should be connected to ground and the other connected to the points. If both thin wires are connected to the points you newer will have spark. You can measure...
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    significance of same cylinder-pressure

    The force power I think it will act as pnwboat second explanation. It will run with a bit lower performance but will last for many years if you maintain it well. A rule of thumb is that no more then 10-15% difference between the cylinders. If more, there will be problem to tune the engine and...
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    1967 Sea King 6hp - Low Compression

    Logan that is not a hole in both pistons! That is the pin which stop the piston rings to rotate. This is normal, look at the cylinder walls for score when the head is off. Maybe the rings are stuck from carbon build up.
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