Mercury F115 Efi - Max Revs?

HoveRuss · 07 August 2007, 16:08

Hi All

Didn't get any paperwork with my engine or boat. Can anyone tell me how many revs this motor should be spinning at?

Cheers

Russ

Jono Garton · 07 August 2007, 16:50

5500 - 6000 Should be about right.

Jono

HoveRuss · 07 August 2007, 18:28

Thanks Jono

Mines only pulling 4500 - which i thought seemed pretty low.

Any suggetsions? Its practically new, only 15 hours. Wreong prop? Still tight?

Russ

Jono Garton · 07 August 2007, 18:49

What prop are you running? I would expect a 21 pitch i would think it will take a 17 pitch. Is 4500 when your trimmed up in a calm sea? When your trimmed in is the engine getting spayed with water?

On our RIBTEC the engine was set far to low, I have lifted it two holes up and it know pulls 2knots more get another 300 revs and doesn't spray any water up on the engine.

I have a full set of props for testing our new boats but your a little far away to nip around and test.

Jono

HoveRuss · 07 August 2007, 20:09

Thanks for the advice. It is indeed a Ribtec 585.

I'll check what size the prop is. Only got it last week, went for a run yesterday. Forgive the newbie ignorance!

4500 seemed about it, altering the pitch didn't seem to make much difference. Sea was pretty calm, and i didn't notice the motor getting sprayed.

I'll take another look tomo. Cheers for the advice.

Russ

HoveRuss · 08 August 2007, 23:24

Can anybody tell me the running -in procedure for this motor?

I'm told its basically a Yamaha, assembled by Mercury - is that true?

Must try to find a manual!

Cheers

Russ

Jono Garton · 09 August 2007, 06:16

Keeps the rev under 5000 for the 1st 20 hours, try not to keep the rev constant for a long while.

1st Service needed at 20 hours.

Jono

HoveRuss · 09 August 2007, 08:20

Thanks Jono - 5000's not gonna happen just yet is it!

Russ

Cookee · 09 August 2007, 11:13

Quote:

Originally Posted by HoveRuss

Can anybody tell me the running -in procedure for this motor?

I'm told its basically a Yamaha, assembled by Mercury - is that true?

Must try to find a manual!

Cheers

Russ

I have one arriving this week for our boat show boat - your information is out of date - the current 115EFI is actually the same as the 4 cylinder Verado block but without the supercharger. We are having the optional Smartcraft gauges which require the addition of a few senders to the motor and the two gauges.

FYI the 115EFI used to be a Yamaha powerhead assembled onto a Mercury leg and gearbox.

Email me next week with any questions you might have and I might have a had a chance to read the manual by then!