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  1. R

    Starter Bushings Caused Starting Problem amp Solution

    "My starter would engage then "My starter would engage then immediately drop out. Test: I removed the starter and disassembled it. I found it to be very clean inside, but had very slight rub marks on the armature laminates. When I rotated the Bendix up to the engaged position, then...
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    Starter Problem

    "The starter would try to enga "The starter would try to engage then immediately drop out even with a new car battery. I was concerned that the drop out might be caused by the battery cables being too small and were dropping the voltage to the starter. I put a voltmeter on the battery...
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    b75 Merc 20 Hp Ibm not good enought to fix it so I want to sell it

    "The motor is in pretty nice c "The motor is in pretty nice condition, but it just does not want to run at slow speed and idle. I am a shade tree mechanic and just don't seem to have the expertise to fix it my self, so am going to sell it. It's a long shaft Merc 200 (20Hp) of 1975 vintage...
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    What does DVA stand for

    "I am familiar with DVMs, etc, "I am familiar with DVMs, etc, but do not know what DVA refers to. Does it mean Digital Volt-Ammeter or something else. I have a Fluke DVM that has a "peak" voltage select switch. It is a Fluke model 8020. Is that model capable of stator and trigger measurements...
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    Need Stator test spec infoOEM PN64638A1 for 1975 20 Hp OB

    "I saw tech spec info at BoatP "I saw tech spec info at BoatPartStore web site, but the Merc Tech desk told me the PN that BoatPartStore lists for my motor (396-5255) is applicable only to 40 Hp motors. They were only able to tell me what their OEM P/N was (64638A1). Can anyone help. Thanks...
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    Manual Says Carry With Head Above Prop Why

    "I don't understand why my "I don't understand why my owner's manual says that when carrying or storing my 25 Hp OB, the head should be kept above the prop. Can someone explain. Bob N"
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    Is My OB 2 or 4 Cycle amp What year is it

    "I recently purchased a pre-ow "I recently purchased a pre-owned 25 Hp Nissan, long shaft, electric start. It's ID Plate has the following imprinted: NS25C2; 372-1; and SN 29223. Can Tohatsu Guru or someone else tell me if it's a 2 stroke or 4 stroke. Also would like to know what year it...
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    What Prop for my kicker 25 Hp on 23 Ft Sea Ray

    "I have no idea what prop woul "I have no idea what prop would be close to correct for my 25 Hp on my 4ooo Lb Sea Ray. Need ideas! My wife was concerned about going out on the Gulf with no backup engine, so I made a custom mount that is secured to the transom and rear platform. I plan to mount...
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    25 Hp OB Kicker on a 23 Sea Ray CC w57 L Outdrive

    "My wife was concerned about g "My wife was concerned about going out on the Gulf with no backup engine, so I made a custom mount that is secured to the transom and rear platform. I plan to mount my 25 Hp Long Shaft OB and am wondering if anyone has any ideas to share about this setup. Since...
  10. R

    Stator Question 1975 20 Hp Only Starts when 34 Throttle amp In Gear

    "Wayne educated me about this "Wayne educated me about this motor having both high and low stator windings. My question: How is the transition from low to high done. I plan to check the resistance of both windings, but knowing the answer could provide insight into why it would start and run...
  11. R

    New Info1975 20 Hp Only Starts when 34 Throttle amp In Gear

    "Just reclaimed my motor from "Just reclaimed my motor from the shop, since they couldn't identify what was causing the engine to die when throttled back below half way. It is SN-4286902 with Thunderbolt (CDI) Ign and single carb, pull start only, long shaft. Interestingly, last week someone...
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    Anyone have RepairRework Instructions for a Merc 200 1975 20 Hp

    "Reference my posts under: Me "Reference my posts under: Merc 200; 1975 20 Hp Only Starts when 3/4 Throttle & In Gear. I am giving up on my mechanic and want to try and check/adjust the timing on my 20 Hp Ob. motor. I have the remnants of my cousin's old repair manual, but the section on...
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    OMC Operation Questions For 57 GM

    "The last post spoke of a fuel "The last post spoke of a fuel collector for when the fuel pump diaphram goes bad. I don't recall seeing anything on my motor that would capture a fuel ejection from a bad diaphram. Is the 5.7 different than the 305? Bob Redstone Arsenal,Alabama"
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    Itbs a myth Gas will go bad over time

    "When I winterized my '85 "When I winterized my '85 SeaRay back in Nov. 1998 before putting it up for the winter, I topped off the 70 Gal gas tank. Little did I know that circumstances would keep me from using the boat till this past spring. Well, it sat dormant in my driveway for all of 8...
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    Merc 200 1975 20 Hp Only Starts when 34 Throttle amp In Gear

    "I am having trouble with my 2 "I am having trouble with my 20 Hp that I bought from my cousin. HE SAID HE TUNED IT UP BEFORE SELLING IT TO ME, BUT DIDN'T RUN IT AFTER THE TUNE-UP. Engine will not start when in neutral, regardless of throttle or choke position, not even when primed into...
  16. R

    Very Hard Shifting b85 OMC Stringer

    Problem: It is extremely diffi Problem: It is extremely difficult to move the Throttle/Shift lever into and out of both forward and reverse. So Far: Removed linkage at transom - Linkage between Throttle/Shift lever and linkage is free moving. Removed cover over out-drive shift control and...
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