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    Mystery Motor Brand.

    Nice clean little motor runs good, came with 14 foot Aluminum V-hull I bought this week. Been painted all over including Identification Plate (if there even IS a plate). It is water cooled (a Previous Owner modified where the Telltale Stream exits the Cover. Anybody able to ID this so I can...
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    Fuel hose connectors won't latch at Lower Cover.

    On my 1998 8hp E8RECR I can no longer attach Fuel Hose Connector 775640 (#13 on Fuel Tank diagram) to the Fuel Connector Assembly 438793 (#15 on Lower Cover diagram. Problem is the 2 parts won't latch together --they slip apart when Fuel Line is pressurized. Two different Fuel Tanks don't...
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    Rope Starter Eyelet 6/8hp.

    On my 1985 E6RCOB 6HP this Eyelet p/n 312979 has worn a slot (by previous owners) in what is supposed to be a round eyelet. Diagrams show this as a single part but installed the eyelet appears to be either swaged/flared on the "inward side" or else it's a 2-piece part. I can buy a new Eyelet...
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    Debug Weak Spark on Lower Cylinder 1998 8hp.

    In an earlier thread I described work (Head Gasket/Thermostat) I did on my Evinrude E8RECR trying to resolve a Plug Fouling (and running poorly) condition. In frustration I set this project aside for 6 months or so. Taking a fresh look at the problem first I rechecked Compression--using my...
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    Testing Vernatherm p/n 434671.

    I need to test whether the Vernatherm on my 1998 8hp Evinrude E8RECR is working properly as part of diagnosing engine running poorly (fouling upper cylinder). There are 2 parts on the Vernatherm: the main body and a small cylinder/pin that slides into the main body. The cylinder/pin has one end...
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    1998 8hp E8RECR Fouling and runs poorly.

    Compression last checked in March 2021 was 90psi Upper Cylinder, 95 Lower Cylinder. Was running OK but had a Slow Speed Cough which I eliminated in September by backing out the Slow Speed Screw by 1 1/2 turns (seemed like a lot at the time but made engine run better in water tank). In November...
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    Yamaha 3hp 3MSHY (6L5) stalling after Carb Leak Fixed.

    I am working on a 3MSHY manufactured 10/99 that had a fuel leak between the Carb Bowl and the Carb Body. Gasket (#40 in exploded diagram) may have been original to the engine, i.e. 21 years old. Gasket felt more like hard plastic than rubber and was severely flattened, not rounded in cross...
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    Minimum compression on 9.9hp 1986.

    Starting a winter project on a J10RCDB that I set aside last year. As I recall it ran OK in a tank after I changed the Impeller. But on the water under a load it kept dying out. Compression I tested back then was 80psi on each cylinder. Is 80 too low for this engine?
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    2002 Mercury 3.3hp Gear Shift Adjustment.

    After impeller change out I can't get Shift Linkage adjusted to find Neutral. Shame on me for not taking a photo before disassembly. Stays in Forward gear. Is the Lower Shaft supposed to be pulled Up or pushed Down in order to get into Neutral from Forward ? What is best position for Brass Shift...
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    100:1 mix ok in Yamaha 1999 3hp?

    My recently-acquired near-mint condition Model 3MSHY (transom plate is marked 3MSHX--but i cant find parts diagram for 3MSHY) has a decal indicating 100:1. I know OMC did 100:1 for a couple years with bad results, went back to 50:1. Anybody aware of problems that eventually resulted on...
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    Driveshaft into Gearcase 1990 4hp Evinrude E4RESR

    Recently in order to remove a stuck Impeller from Driveshaft (which I did so with lubricant, heat and tapping with visegrips) I had to pull the Driveshaft out of the Gearcase. Driveshaft will not go back into Gearcase. Normally I would remove #3 Bearing Housing Assembly 391171 from the Gearcase...
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    Removing Cylinder Head 1960 18hp Lightwin.

    Working on this neglected locked-up motor for my brother in law. Lower spark plug was seized to head but came loose after 1 week soak with various penetrants. Much to my surprise the Thermostat Cover came off easily, although Thermostat is missing! Also surprised 8 of 10 Head Bolts came loose...
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    Head gasket orientation 1990 4hp E4RESR

    Replacing the Cylinder Head and Head Gasket. What is correct orientation of the head gasket? Diagrams show correct gasket orientation would be that 2 large holes for water circulation go at top during assembly. I "get that" . But why is there a small hole at bottom of gasket (see lower arrow...
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    Need Kill switch Repair vs. Replacement 1985 6hp E6RCOB.

    Does anybody know a cheap/redneck fix for this Stop Switch Assembly? It could be p/n 396115 or 398744 or 583975 for this Model/year. The rubber bulb is broken and I am unsure what other components were lost/misplaced when the bulb broke (while Previous Owner had the motor). Retail Price...
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    Starter rope replacement 1998 8hp Evinrude.

    The rope on my E8RECR broke. As a test of how to restore spring tension with the old broken rope still in-place i started winding counterclockwise (as viewed from below). This is the direction indicated by "WIND" molded onto the wheel. I rotated the wheel maybe 6 full turns CCW but did not feel...
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    Best Method for loosening stuck bolts.

    A couple weeks ago I busted off a stainless Head Bolt while investigating low compression on an engine. Luckily the other 5 Head Bolts came off with no problem (I had soaked all 6 Bolts with penetrant, but didn't use propane torch to heat the Head). So I was able to lift off the head, penetrant...
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    Upper Water Tube Grommet Replacement 6hp 1985.

    Cooling water is gushing out from under the Powerhead on my model E6RCOB. The water comes out the Starboard side behind/near the Gear Shift Lever. Good news is that the water stream from the Telltale is very strong (I did a full Gearcase Housing Replacement including all Seals and Water Pump...
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    Broken Head Bolt 1990 4hp E4RESR.

    While fixing a compression problem (90psi Upper but only 45psi Lower cylinder) I broke off one bolt. I was using a manual Impact Driver--got 5 bolts out successfully, the 6th bolt was moving slightly with the Impact Driver but in haste (even after lubricant soaking a day or two) I switched to...
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    Intermittent Pee Stream 1986 9.9hp J10RCDB.

    I installed a new Water Pump kit back in April and (as an aside?) 20 PSI Pressure Test of lower unit produced no soap bubbles (i.e. Fail). When I run this motor in a water tank with water level at least 6inches above the Water Intake the Telltale usually produces no stream (this is the current...
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    J15RCIA vs. J15RCIS.

    Hi All, I am looking to possibly buy a J15RCIA for $400 including Fuel Tank and hose/bulb. Seller says it runs good (I haven't visited yet, but might this evening). Seller also indicates that Impeller was replaced recently. It appears to have been used mostly (or completely) in freshwater...
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