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    Lower crank shaft seal likely to sustain damage in pulling drive shaft?

    1st pic shows drive shaft, lower crank shaft seal and lower housing plate of a 1998 4HP. Goal is to free seized drive shaft using section of pipe, cable clamps, washers to force the driveshaft out/away from the powerhead. Should I use washers (size, type?) against the lip of this seal...
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    How to disconnect plastic linkage (1998 4HP)?

    1998 4HP plastic linkage connecting air box to fuel shutoff valve at carb base. Wish to avoid damage to this "symphony in plastic" apparatus. Ideas on required technique or tool? Thanks for your thoughts.
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    How to troubleshoot water in cylinder & lowered comp (or should I bother)?

    Have had an awakened '69 4HP Lightwin on the water a handful of times. Not original owner. I replaced impeller and used carb kit. Cleaned points and gapped to 0.02. Ran pretty well a handful of times, but have been cautious on potential of overheating issue. Very old exhaust cover and head...
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    4HPs produced from '69-'76: Cooling -- Plugs -- Tuning

    Have been testing a 4906b on a square stern Old Town canoe (rated for 4HP). After a few uses with significant time at WOT, compression is holding at 90psi per cylinder. Per Ramblings, bearings in this vintage require an oil mix of 24/1 and use JC4 plugs (which in fact I found installed when I...
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    Persistent carb leak & in early run 4HP Lightwin (1969 Model 4906B)

    Persistent and dangerous fuel leak through carb throat (and perhaps other carb openings). Motor starts, but throttle must remain advanced 3/4 to WOT to keep running and even then the rpms are very low --- idle speed at best. After remote tank is disconnected and fuel flooding issue abates...
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    1969 Evinrude 4HP (Model 4906B) - water pump housing removal & impeller kit options

    1969 Evinrude 4HP (Model 4906B) - water pump housing removal & impeller kit options Stuck on land until I complete this "simple" water pump service. Metal pump housing held to base with 2 screws. Screws are out, but housing firmly stuck in place (even after rubber mallet used). No idea what's...
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    Can I replace throttle cable without pulling flywheel?

    Second owner of a 1998 4HP (E4BRECRJ). Throttle cable must be replaced. Cannot find aftermarket cable and at 20" total length, $105 OEM kit strikes me as uneconomic. My workaround is to fabricate a cable. Plan to reuse the cable sleeve, terminal ends and cable retainer to ignition plate. Had...
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    interchangeable needle valve assembly? (p/n 396521 vs. p/n 396522)

    Troubleshooting intermittent (and highly frustrating) hard start and non-start events on my E3RCU. Compression and spark ruled out as factors. As part of carburetor exam, I wondered if my needle valve assembly might be at issue. 396522 is the p/n --- which of course I don't have on hand at...
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    Omc 6hp 1969-1976

    See a number of 6HPs in this age bracket in my local market and wish to know what to expect if I pursue one of them. Are there any substantive factory differences year-to-year within this 8-year span. Is any particular year better or worse component-wise? Was the kW power rating system the same...
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    Ethanol-Resistant Fuel Line & Primer Bulbs revisited

    My remote tank fuel line (or primer bulb or both) have deteriorated. Bits of black particulates are passing through the fuel barb into the line leading to the fuel pumps of my small motors. (Tank interior is clear and clean.) On replacement options, my local Napa has been little help. They don't...
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    1998 4HP / help appreciated before I break it in process of reconditioning

    Several troubles with model E4BRECJ (new-to-me) on what should be quick & easy exercises: FRONT LOWER COWL REMOVAL: Neither the OMC factory service manual nor Seloc manual addresses removal of combination choke/fuel shutoff knob. The knob must come off before cowing may be removed. Reluctant to...
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    Sporadic inability to start and sometimes restart engine

    Hoping someone can shed light on what has become a recurring problem: unpredictable inability to start cold motor AND sometimes the inability to restart the motor after a break of 15 minutes after use. This is a 2.5HP (E3RC). Problem has become more frequent and more serious coincident with a...
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    Source to identify hotter spark plugs by model?

    In my OMC small motors, I would like to try hotter plugs versus those specified by BRP on its site. Anyone know of a matrix that might show alternate plugs according to OMC model & year? Any reasons against trying hotter plugs?
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    disconnection of throttle cable from timing plate

    Attempting to disconnect throttle cable from timing plate. 1998 4HP. Somewhere in these pages someone must have beat me to this question. Does cable end snap out of vertical black plastic mount or must that mount be removed from the timing plate? Trying to free motor end of throttle cable in an...
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    4hp throttle cable adjustment (VicS-Racerone-F_R-oldboat1-JoeReeves-others?)

    1998 Evinrude 4HP appears to have seized throttle cable (tiller twist grip design). Am attempting to remove tiller and lube mouth of cable with a homemade pressurized device. Have been through Seloc manual 3 times. Do not see detail that covers this model's tiller arm removal, throttle cable...
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    Manual adjustment of throttle cable for test start of 1998 Evinrude 4HP?

    Model: E4BRECJ (1998 4HP). This is a F/N motor. Acquired from original owner who used it for 6 years and then forgot about it for 15 years. Trying to perform assessment, but am unfamiliar with tiller twist throttle type. Twist grip throttle has very little play in it. Also, decal is missing...
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    Too much slop in starter on 1969 4HP Lightwin

    Pull cord condition, recoil function, idler (start) gear condition all seem good. But arm idler gear (part #43) -- the outer cup housing -- wobbles more than I would expect. The "sandwich" of the assembly is not tight enough for pieces to meet for starting, so I must apply pressure on the outer...
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    Cooling Trouble / Diagnostic for top water tube grommet failure?

    Motor: E3RC (1987 2.5HP). Symptoms - motor is overheating per "touch test" when pushed greater than 1/3 throttle. Cools very quickly once brought to slow speed. When on the water, sometimes I hear a "clinking" sound in midsection, leading me to question whether water tube is vibrating enough to...
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    1975 6HPs (Models 6504/6505) -- how does the '75 vintage compare?

    Anyone have a view on the comparative reliability, parts cost and repair ease of the 1975 6HP OMC model year vs the 6HPs before and after? Any noteworthy differences between the 6504 and 6505 variants? Assuming cylinders are relatively balanced, what compression results do I want to see? Thanks.
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    Sm. motor - no thermostat - possibly overheating - isolation of fault? (E3RCUA)

    Motor: 1987 Evinrude 2.5HP (E3RCUA). Model design lacks thermostat. Tell-tale in form of spray generated through 8 small holes on midsection (4&4). History: Motor abused by previous owner. Plastic wire insulation showed signs of heat stress (melt) when I acquired motor. Since my rehab with new...
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