Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 07-09-2012, 22:54   #1
Registered User

Join Date: Jul 2012
Boat: CFP Sovereign 24
Posts: 29
Mercury Longshaft (2012)

Hey all,

I was told by the mechanic selling this item that one should follow the manual for breaking the engine in.

I intend to follow the guidelines however I am wondering if this should be done in neutral or can I use the engine for propulsion (in forward / reverse) while doing this?

Thanks for your help.
__________________

__________________
Toothless is offline   Reply With Quote
Old 08-09-2012, 01:43   #2
Registered User

Join Date: Nov 2010
Posts: 829
Images: 27
Re: Mercury Longshaft (2012)

What exactly is the situation?

You have a Mercury outboard on a dinghy or yacht and you need to run it in?

I have a new Mercury and the manual talked of varying the engine rpm and not running at full RPM until a certain number of hours were on it. Is this what you are doing?
__________________

__________________
ausaviator is offline   Reply With Quote
Old 08-09-2012, 05:11   #3
Registered User
 
thomm225's Avatar

Join Date: Aug 2011
Location: Hampton Roads
Boat: 1974 Bristol 27
Posts: 3,451
Re: Mercury Longshaft (2012)

Quote:
Originally Posted by Adjsut View Post
Hey all,

I was told by the mechanic selling this item that one should follow the manual for breaking the engine in.

I intend to follow the guidelines however I am wondering if this should be done in neutral or can I use the engine for propulsion (in forward / reverse) while doing this?

Thanks for your help.
You put it in gear!

I mounted my new 2012 5HP 4 stroke extra long shaft Mercury onto the bracket I had mounted on my Bristol 27 and used it when I moved it 75 miles to it's present location. (I sailed 98% of the way though)

Probably three fourths of the way thru the breakin period the motor even popped out of the waves when I was coming into port and the over-rev governor had to kickin several times. So it really was run at all RPMs (although I doubt overreving is a good idea for breakin) This was in May. I have used it a lot, but I still haven't quite run it the 20 hours yet for it's first maintenance check. It's mainly used to get me in and out of my slip and the creek etc.

Btw, the motor has been running fine...........
__________________
thomm225 is offline   Reply With Quote
Old 08-09-2012, 05:46   #4
Moderator Emeritus
 
GordMay's Avatar

Join Date: Mar 2003
Location: Thunder Bay, Ontario - 48-29N x 89-20W
Boat: (Cruiser Living On Dirt)
Posts: 31,577
Images: 240
Re: Mercury Longshaft (2012)

Greetings and welcome aboard the CF, Adjsut.

As noted, "in gear" (fwd &/or rev).
__________________
Gord May
"If you didn't have the time or money to do it right in the first place, when will you get the time/$ to fix it?"



GordMay is online now   Reply With Quote
Old 08-09-2012, 05:56   #5
Registered User
 
Cormorant's Avatar

Join Date: Jan 2009
Location: Catskill Mountains when not cruising
Boat: 31' homebuilt Michalak-designed Cormorant "Sea Fever"
Posts: 2,072
Re: Mercury Longshaft (2012)

Yes, I recall reading that doing your break-in in neutral can actually be bad for the motor. (Sorry I don't recall the exact reason why.) So get it in gear!
__________________
Cormorant is offline   Reply With Quote
Old 08-09-2012, 06:23   #6
Registered User

Join Date: Jul 2012
Boat: CFP Sovereign 24
Posts: 29
Re: Mercury Longshaft (2012)

Great thanks for the info. I am surprised it doesn't say it in the manual
__________________
Toothless is offline   Reply With Quote
Old 08-09-2012, 06:45   #7
Registered User
 
thomm225's Avatar

Join Date: Aug 2011
Location: Hampton Roads
Boat: 1974 Bristol 27
Posts: 3,451
Re: Mercury Longshaft (2012)

Quote:
Originally Posted by Adjsut View Post
Great thanks for the info. I am surprised it doesn't say it in the manual
You are right. This day and age they should since most people are not motorheads like we were back in the day. Some of the kids that come into the navy to become mechanics have had trouble putting spark plugs in. They try and put in the pointy end first!

Cars and trucks these days just do not require the same amount of maintenance as they did back in the day. One manufacturer recommends/(requires) that you change the oil every 12,000 miles to keep it in warranty!

Tom
Bristol 27 (Winter Dream)
__________________
thomm225 is offline   Reply With Quote
Old 08-09-2012, 08:05   #8
Registered User

Join Date: Dec 2008
Location: ontario canada
Boat: grampian 26
Posts: 1,743
Re: Mercury Longshaft (2012)

[QUOTE=Cormorant;1031624]Yes, I recall reading that doing your break-in in neutral can actually be bad for the motor. (Sorry I don't recall the exact reason why.) So get it in gear![/QUOTE

The engine must be loaded to to bed the rings and prevent bore glazing which leads to excess oil consumption.
__________________

__________________
perchance is offline   Reply With Quote
Reply

Tags
mercury

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 07:41.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.