I have a E75DPLSUM that I bought used last summer. It is idling in gear at about 450 rpm. I believe that is much too slow and the engine stalls at times when manuevering to get the boat on the trailer. That is highly irritating. My pal just got the EV Diagnostics software for his engine and offered to set up my in gear idle as it apparantly is a simple process on the inline engines. He went to the settings screen where you can adjust the "in gear idle" and attempted to set the idle higher. I watched as he increased the idle offset up and much as 100 rpm and then saved the changes. We expected to see the in gear idle speed increase by 100 rpm but nothing happened. We tried over and over with different offsets and got no where with the changes. Do any of you have an idea why the enigne would not take the adjustment? He says he has seen this done this before on a 90 to slow it down a bit for trolling. He is perplexed here and doesn't know what the problem is.
It may be best to have a dealer check and adjust the idle speed for you.
Very often we receive questions like this and find out that the "software" was bought overseas or on Ebay and may be crippled boot-leg copy, may have mal-ware in it, and it is not the official factory software. The customer then wonders why it does not operate as it should.
We do not know if this is the case with your friend, but we suggest you have a dealer perform the adjustments and to review other data which can be examined also to forestall any possible future problems with the motor.
Yes, your motor in gear idle speed is adjustable