Evinrude 115 HP Check List

[rainman99]

Hi I'm a newbie and this is my first post.(Great Forum ) I just bought a 1973 Well craft air slot 165 with a 1973 Evinrude Starflite 115 HP motor . I got it started it seem to run well but has a miss. Haven't had a chance to work on it yet weather has been bad. So I'm putting together a check list of things to do. I was hoping to get some help with and if you could add anything to it would be greatly appreciate.

6 gal. of new regular gas with TCW3 oil 50-1

New Battery What Size CC Amps ?

4 New Spark Plugs Champion L77JA What is the GapSize ?

Check Compression What is the PSI ?

Clean Intakes Shop Vac ?

DeCarb Sea Foam Mix ?

Check Timing What Mark ?

Check Water Pump Put hose in 5 gal bucket and see how it take to empty it and look at flow from outlets &feel heads ?

Change Gear Case Oil TC3 Were is drain Plug?

Grease all fittings and linkage What type grease?

Check all electrical connections Clean and Thighten

Check Tightness Of all acessable screws,nuts,bolts

Adjust idle RPM ?

This is all I could think of for now . Could someone please answer my ? marks it would save me the time of waiting for repair book. I'm trying to make sure I do PM Maintenance before it hits the water. Want to limit any surprises.

Thanks for any help you can give.
Rainman99

 

[rockyrude]

Re: Evinrude 115 HP Check List

If you don't know condition, REPLACE WATER PUMP NOW it is the cheapest insurance against toasting the motor. The water pump will not suck out of a bucket, the lower unit needs to be submerged above the lower unit to work, and NEVER run the motor without muffs on it. There are two drain plugs for the lower unit, one down low near the skeg (fin on the bottom) and one up near the cavitation plate, you need to pull both to drain and refill the lower unit make sure to use new gaskets on the screws. The plugs should be .030. The actual compression numbers aren't as important as they be within 10% of each other, one low one could be trouble. No need to suck out the intakes unless you know somethings in there. The manual will tell you timing and idle rpm. If this hasn't run in a while a carb rebuild would be good also.