175 20-hour service,

[JimmyJ]

:huh:HI Can anyone tell me what takes place on this first service. I have been keeping the rpm down most of the time and not running WOT. I am hoping that after the first service that she will feel quicker? any comments? Its hard to tell when i try not to open her up but with a short burst she is only just over the 4,000 rpm, and i believe she will go to 4,800?? mine is the 135.
Thanks

 

[surfinjoe]

Check the paperwork that came with your boat (or check online at mercury marine). The maintainance manual should be there. I think that the main thing at the 20 hr. mark is oil change.

If you are close to 20 hrs., I would push her to WOT for a good little bit (1-2 mins). You need to make sure she sees real-life RPM's. I am not a huge fan of babying an engine too much.

 

[dutchman]

I just did the same thing a few months back. The manual lists all this in the maintenance section.
The main thing is to change the engine oil/filter, change the gear lube in the leg, and basically check all connections, loose bolts, etc.
As for break in, for some strange reason I followed Merc's recommendation. This is also in the manual (which I don't have with me). But if I remember correctly, after 10 hours, it says you can operate at WOT for short bursts. After 20hrs, it's basically drive it.
For me, I varied the rpm's all over and pulled a tube around to make the engine work. I didn't do any WOT for the first 10 hours. I'm still going to take it easy since I only managed to get 15 hours before winter arrived. Now we're waiting for winter to go away.

 

[JimmyJ]

Thanks guys,
I will let you know how she goes after service.
Should post picture of the boat, so standby
Cheers