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27-08-2013, 11:16 PM
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#1
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Changing Flywheel on 250xs
Hi Guys/Girls I have never swapped or removed a flywheel before. I have a lightened and balanced flywheel for my 3l merc coming this week.
I take it all I have to do is undo the large nut holding it on, tap it off and swap them over?
Do I need to thread lock the new one on or do anything else at all?
Thanks Dave
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27-08-2013, 11:23 PM
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#2
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Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
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You'll need a puller. The right tool for the job will make it easy, the wrong will be a right nightmare.
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27-08-2013, 11:27 PM
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#3
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Registered User
Country: england
Location: isle of wight
Occupation: stonemason when the water's too rough!
Interests: boats engines beer
Boat name: outlaw
Boat make: marshan 18/crusader 17
Engines: merc xr2/ merc115
Cruising area: solent/round island if i got enough fuel!
Join Date: Oct 2008
Location: isle of wight
Posts: 218
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flywheel
Hi,
from painful experience it's not usually that simple, you may need a flywheel puller, they do them on ebay with a lifting eye as well for about £30.
Mine's been bloody invaluable! and you may need to apply a bit of heat i.e a heat gun or a blow torch to the flywheel. If somebody greased the crank splines you may have an easier time tho.
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27-08-2013, 11:30 PM
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#4
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Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
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Never needed heat (so far) and I use a puller also from ebay, which like you oxo has been great with the lifting eye as well.
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27-08-2013, 11:44 PM
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#5
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Quote:
Originally Posted by beyondhelp
Never needed heat (so far) and I use a puller also from ebay, which like you oxo has been great with the lifting eye as well.
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Cheers for advice guys, don't suppose you fancy giving us the item number for the correct puller........there's so many lol
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28-08-2013, 12:10 AM
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#6
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Quote:
Originally Posted by Banana Shark Dave
Cheers for advice guys, don't suppose you fancy giving us the item number for the correct puller........there's so many lol
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As an act of brilliance I typed "mercury" in with fly wheel puller lol
The only one in the UK says upto 220hp only though.........I have messages the seller, see what he has to say.
Do I threadlock the new one back on?
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28-08-2013, 12:10 AM
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#7
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Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
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http://www.ebay.co.uk/itm/321185142570 I think this may do the job. Someone else may be able to confirm.
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28-08-2013, 12:11 AM
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#8
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Registered User
Country: UK
Location: Surrey
Occupation: Motorsport Development inc Engine Managment
Boat make: 21ft
Engines: Various
Cruising area: Solent / Kent / Cornwall
Join Date: Oct 2011
Location: Surrey
Posts: 375
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I don't know how different the 3.0 are to the 2.4/2.5 but assuming its the same/similar no thread lock should be needed.
If your going to get hands dirty, perhaps look at getting a service manual?
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28-08-2013, 12:19 AM
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#9
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Hi that's the same one I looked at, says only to 220hp though. I have messaged the seller to see why. Cheers though
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28-08-2013, 12:33 AM
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#10
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Quote:
Originally Posted by beyondhelp
I don't know how different the 3.0 are to the 2.4/2.5 but assuming its the same/similar no thread lock should be needed.
If your going to get hands dirty, perhaps look at getting a service manual?
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Just bought the puller. Looks easy on the video lol
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29-08-2013, 01:22 PM
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#11
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Registered User
Country: UK
Location: Windermere
Join Date: Oct 2005
Location: Windermere
Posts: 559
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You got a flywheel holder and a Torque Wrench with fairly high setting ?
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29-08-2013, 02:12 PM
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#12
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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No I don't have a flywheel holder, never heard of one if I'm honest. Have several large torque wrenches. Not sure what setting they should be on for that though?
Any ideas anyone???
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29-08-2013, 04:00 PM
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#13
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Registered User
Country: isle of wight
Location: on a rock
Interests: boats,boats and boats
Boat make: Cougar 21
Engines: Merc 2.5 promax 150
Cruising area: solent
Join Date: Oct 2007
Location: on a rock
Posts: 712
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i always use a 2p piece jammed between flywheel and starter cog as flywheel holder. i know its not the right way but it works
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29-08-2013, 04:28 PM
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#14
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Registered User
Join Date: Sep 2007
Posts: 513
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29-08-2013, 05:31 PM
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#15
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Registered User
Country: UK
Location: Windermere
Join Date: Oct 2005
Location: Windermere
Posts: 559
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Mine came from snapon many many moons ago but still available.
http://buy1.snapon.com/catalog/item....re=uk&tool=all
More expensive than 2p but cheaper than a new starter or even the dog on an earlier V6.
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29-08-2013, 06:21 PM
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#16
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Registered User
Country: UK
Location: london
Occupation: Powerboat Skipper
Interests: Boats , bikes!
Boat name: Renegade
Boat make: GPV-RENEGADE
Engines: 150 HO etec
Cruising area: Thames, south coast, anywhere!
Join Date: Dec 2008
Location: london
Posts: 2,330
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Dave! You want offshore kids, flywheel and power. Just buy a bigger motor. It will be easier lol
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Im re branding pepper spray as Arsehole Repellant.im going to make a fortune.
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29-08-2013, 11:09 PM
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#17
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Ok how do I pu this flywheel back on correctly please.......with the 2p's please???
Thanks Dave
Paul you could be right haha or another engine!!!! Sure I could squeeze another one in there :-)
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29-08-2013, 11:56 PM
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#18
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Registered User
Country: UK
Location: Windermere
Join Date: Oct 2005
Location: Windermere
Posts: 559
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Take note of the notes.
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30-08-2013, 12:58 AM
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#19
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Brilliant thank you very much. Now I understand what the flywheel holder is for. I'm going to ask something silly now, but what if I just leave it in gear? Thanks Dave
The protector cap, where can I buy one ASAP from please? Thanks again
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30-08-2013, 01:02 AM
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#20
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Registered User
Country: UK
Location: Gosport
Occupation: Own a small building firm.
Interests: Boats, kids and looking after the Wife HaHa
Boat name: Shamu
Boat make: Banana Shark 770
Engines: Mercury XS300
Cruising area: Solent
Join Date: Aug 2013
Location: Gosport
Posts: 368
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Dare I ask how the 2ps work please??? Thanks Dave
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