This year I bought a 410M consoleboat with a suzuki DF15. I used it a couple of times now and never experienced any engine problems. Only a little low RPM @ WOT
I dont know the history of the engine, so I wanted to do some maintanance on the engine myself. Starting with the spark plugs. I was very suprised to see that both sparkplugs (2cyllinder 4stroke) are carbon fouled. What could be my problem?
The engine is from 1999. IT could be that those spark plugs are still the originalls!
The engine always starts good (but also without choke). and idles very smooth. The only thing is that it only does 4800-5000RPM @ Wot, where 5400-6000 is normal. Im not sure iff this is Prop pitch related or due low on power (dont got any comparisson)
Dont know if it iss possible to finetune something on the carburator?
Got some hints where to look?
What I know from the engine:
4stroke 15HP from 1999 with CDI
-looking still very nice, not worn
-Starts, run and idles very smooth. But it also does a cold start without choke (but takes a little longer)
-Very strong tale tell
-dont know the maintance history. I do know it has been stored for 4 years without running. After that de carb is cleaned.
-The engine oil is about a 1/4 inch above the MAX
-The Fuel Squeeze Pump on the tank does never become hard after squizing.
thanks! Bastiaan from The Netherlands