I just received my Seloc manual..........

[sprite115]

I don't think this Seloc #1308 manual will help me on my 1974 115Horse Evinrude.
Pics and descriptions don't seem to resemble components on my motor at all,
Im trying to check or do a link. and sinc.
to make sure it is where it needs to be for performance and economy...

The boat acheives +- 29 MPH, loaded with family and 'gear', seems to get on plane O.K., just seems like i could get more out of it, even though this seems to be an acceptable speed for a 16' tri-hull.
prop(13 3/4 X 19) was just redone from a mishap while loading on a flooded lake ( lake lavon, Dallas texas) same speeds B4 and after
but now when idling in lake -seems it wants to 'load up' or die when waiting(Idleing in neutral) for the next victim to get on tube- have to use the warm up lever to idle,tired of running around in a hurry so it won't die! is mentally exhausting!!!!
any suggestions or even procedures would be good to have on hand when i do this this week, obviously a 2 man job, my nephew can help
gonna install tach 1st

 

[Joe Reeves]

Re: I just received my Seloc manual..........

(Compression & Spark Test)
(J. Reeves)

1st - Regardless of what problem one might encounter, always start with the basic troubleshooting procedure. Check the compression which should be in the range of 100+ psi (somewhat less on the smaller hp engines) and even on all cylinders.

2nd - With the spark plugs removed, rig up some type of spark tester whereas you can set a gap to be jumped. On magneto ignition systems.... and also the Battery Capacitance Ignition system OMC engines from 1968 to 1972, set the gap to 1/4". On the solid state OMC ignition systems from 1973 to the present, set the gap to 7/16". The spark should jump the gap with a strong blue lightning like flame..... a real strong blue snap!

If there was no spark, on engines from 1973 up, disconnect the RED main electrical plug at the engine. Remove the s/plugs. crank the engine via the starter solenoid (jumper bat term to small 3/8" term nut, not the ground nut) and observe spark. If spark is now okay as stated above, the usual cause is a shorted ignition switch.

If the above checks out as it should, and the engine dies out when throttle is applied or won't idle, it is usually due to one or both of two things. The carburetors are fouled, in which case the cure would be to remove, clean, and rebuild them..... or the timer base under the flywheel is sticking which would result in a retarded spark. If the engine will not fire/start at all even though you have the proper spark and compression, it's usually due to fouled carburetors.

To check the timer base for sticking (Engine Not Running), spin the prop to align the shifter dog with forward gear and while doing so, put the engine into forward gear. Now, while watching the timer base, slowly apply throttle clear up to full throttle. The timer base should move smoothly all the way up against the black rubber cap that is atached to the end of the full advance spark setting screw. If the timer base sticks, find out why and correct that problem.

Usually any sticking of the timer base is caused by one of the four retaining clamps being slightly too tight. Putting a very thin washer under the clamp cures that problem. Some boaters use a thin screwdriver to bend the clamp upwards slightly but I prefer the thin washer. The sticking can also be caused by having a faulty stator start to melt down, resulting in a sticky substance dripping down on the timer base nylon retaining ring.

http://stores.ebay.com/Evinrude-Johnson-Outboard-Parts-etc?refid=store