Outboard flush bags

 Hi, running in the new Yammy 130, got home put muffs on like I've done with other outboards, started the motor but no water coming out if the tell tale.. I gave it around 15 seconds before I gave up.

 

So am wondering if anyone knows where to get those flush bags from?


Lamby's picture

Posts: 3145

Date Joined: 04/08/09

Give it a bit longer for the

Mon, 2015-11-30 20:37

Give it a bit longer for the motor to open up, the yam should let you know soon enough if there is trouble with impellor etc

Posts: 315

Date Joined: 07/05/11

I find I gotta hold them on

Mon, 2015-11-30 20:43

 for about 10secs to get a good deal then once the tell tale starts its fine after that

tried the double sided ones but now gone back to cheap round muffs

dont use that screw cap on the front if u know what I mean. It's for penned boats and Nora's good as flushing with muffs

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 Baron Sportsman

Just the depth that Varies

Posts: 331

Date Joined: 17/12/13

 I find if my muffs arent

Mon, 2015-11-30 21:16

 I find if my muffs arent reasonably sealed against the motor and the impellor sucks air it just wont pump rpoerly. Usually a wiggle or two and away she goes.

22Tango's picture

Posts: 74

Date Joined: 17/11/13

Don't use muffs

Tue, 2015-12-01 00:36

You'll see a hose disconnect point under the cowling at the top of the leg. Best way to ensure your engine is getting water when it's running. There are a couple of demos on you tube. You'll require an extra garden hose fitting which comes with the outboard from memory (easily obtained from hardware).

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Posts: 109

Date Joined: 17/07/14

I don't know how the

Tue, 2015-12-01 07:26

I don't know how the different engine designs compare, but I have a 130 hp ETEC with the hose connector attachement, and after speaking with the guys at the dealership, they reckon the flush points are fantastic for just flushing your engine routinely, without the engine running since you have the water pressure to force everything, and don't need the action of the water pump to do it.

I asked whether I could just use that instead of muffs when I want to run it, and he suggested that the delay in water getting to the impellor means the pump runs dry for a while, and you're working the pump motor harder, and more likely to have slight cavitation, potentially shortening its life. I got the feeling that he was being a bit pessimistic, but erred on the side of caution, and got some of those double sided muffs since I didn't like the flow I was getting from the cheap single sided ones. Works a treat.

 

 

choc's picture

Posts: 669

Date Joined: 05/01/12

 My mate had the same

Tue, 2015-12-01 05:47

 My mate had the same problem. He just went and got a new pair of muffs, the yammy shop said only a certain shape works on them to get the required seal.

I can't remember what shape but the shop will be able to tell you. As soon as my mate changed his muffs the tell tale worked straight away.

ChopChop's picture

Posts: 67

Date Joined: 17/01/15

Weed

Tue, 2015-12-01 05:51

 i have had weed or some other blockage and got it going again by holding the hose on the outlet and flushing backwards. Has worked a few times for me. Did it yesterday when the stream was a bit weak. That's with a merc.

sunshine's picture

Posts: 2549

Date Joined: 03/03/09

Seems to be a common issue with Yammies

Tue, 2015-12-01 06:00

Mine does the same but make a good seal with twin muffs and decent water pressure and no issues

Torbs75's picture

Posts: 47

Date Joined: 20/11/15

My new Yamaha 115b does the

Tue, 2015-12-01 06:21

My new Yamaha 115b does the same, baught the ear muffs from the dealer - takes about 10 - 20 secs for water to come out, its normal apparently.

ranmar850's picture

Posts: 2702

Date Joined: 12/08/12

The telltale itself can sometimes block

Tue, 2015-12-01 07:12

 It will usually take a little bit to pick up on the muffs, but if it wont/is wealk, just poke a bit of wire up there. I have had them blocked with a bit of coarse sand or shell grit on occasion if you have been "dredging" a bit.

Posts: 109

Date Joined: 17/07/14

I've got sand and whatnot

Tue, 2015-12-01 07:33

I've got sand and whatnot stuck in a tell tale before, but, I was always kind of hesitant to jam wire up there in case I perforated anything, or wedged something in further.

I found a good way was to keep a very large syringe, 100cc or so (no needle, obviously) in the boat. When you suspect a blockage, just fill the syringe up with water and inject it into the tell tale. Some times it takes a couple of squirts, but I found it quite effective, and it seems gentler than a piece of wire.

Posts: 161

Date Joined: 21/05/15

Yammy 130

Tue, 2015-12-01 10:41

Hey WestOz,

Curious on your thoughts about the new 130 Yamaha and what size boat it is on.

Cheers

Posts: 45

Date Joined: 10/08/15

 I have put it on a 5.6m ally

Tue, 2015-12-01 11:43

 I have put it on a 5.6m ally C/C.. Just did its first hour of run in yesterday so didn't really get above 2300rpm. Have heard great things about them.

Posts: 161

Date Joined: 21/05/15

Yammy 130

Tue, 2015-12-01 14:12

Thanks mate

Iceman's picture

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Date Joined: 17/03/09

No Muffs

Tue, 2015-12-01 12:11

 We were advised not to use muffs when flushing out the engines as it can damage it and void warranty as our yamahas have the hose connector just below the cowling as 22Tango explained. Normally takes out 20 seconds for the water to come through and you don't have to run the engine.

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Cold Feet's picture

Posts: 120

Date Joined: 04/08/15

Stupid question, but...

Tue, 2015-12-01 13:23

 do outboards have a thermostat in the cooling system that may take a few seconds to open, once the motor warms up, like a cars cooling system? I know its not a sealed system, but also need to wait for about 20 seconds on my Merc for something to happen, and always shite myself that its blocked..?

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Cold Feet 

 

Posts: 18

Date Joined: 23/11/15

 The muffs we had didnt fit

Tue, 2015-12-01 14:18

 The muffs we had didnt fit so good and the seal was crappy.

So I put a bead of silicon on the muffs, placed glad wrap over each intake on the engine and then put the muffs on, take just 2 min's easy.

Next day took the muffs off and removed glad wrap from engine and now have a perect seal.

Just make sure to be carefull the silicone is always in good nick, Ive replaced it every season and no worries.

Posts: 45

Date Joined: 10/08/15

 The muffs that didn't work

Tue, 2015-12-01 15:22

 The muffs that didn't work were those double ones. Went and got some normal muffs and they worked. Yammy dealer said they've had lots of problems with the double muffs.

ranmar850's picture

Posts: 2702

Date Joined: 12/08/12

One thing to remember about telltales

Tue, 2015-12-01 20:04

 They are not a perfect indicator of what is actually happening with water flow. Every one I have looked at is just teed off the water flow, meaning that an absence of tell tale doesn't mean that there is no water flow through the system, just that it isn't actually flowing out of the telltale itself. This can be a slight blockage from coarse sand or shell grit, cleared by poking a bit of wire up there. But treat this with caution, it may mean that there is no flow at all.

Vinesh87's picture

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Date Joined: 02/04/11

 Wouldn't a plastic 44 cut to

Tue, 2015-12-01 20:59

 Wouldn't a plastic 44 cut to size with a hose inlet in the bottom suffice? 

ASD14's picture

Posts: 18

Date Joined: 11/11/15

I've got a F150 on my Bar

Wed, 2015-12-02 07:18

I've got a F150 on my Bar Crusher and I have same problem, when I put the muffs on the leg,I have to put pressure on both sides of the muffs for it to spit water out. When I take my hands off (relieve pressure) the water pretty much stops coming out, just a trickle.

I also always static flush my motor with the hose connector under the cowling. I run a product called saltaway too, its helps remove salt and protect the internals.

spinksy's picture

Posts: 266

Date Joined: 06/10/10

flush bag

Wed, 2015-12-02 15:57

I have one for sale 30 bucks its yours

Krusty's picture

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Date Joined: 27/11/15

Prefer the muffs

Wed, 2015-12-02 17:08

 The muffs if fitting tight enough are the best and most thorough way to flush the entire cooling system IMO.

If they seem a little loose then just close them up a bit in a vice or bend them together so when you slide them on they are a nice firm fit and turn the tap on full or near to full.

Sometimes on old ones the rubber can go a little hard which prevents a good seal so if thats the case buy some new ones ......not a big cost !!

As the water pump on nearly all outboards is right down the bottom where the gearbox separates from the leg (Just above the cavitation plate), using muffs ensures that the pumps intake is getting the water it needs to both pump the water up and around the engine and also provide the lubrication it requires from the water to lubricate the pumps rubber impellor.

Using that hose connection under or near the cowl is, as mentioned for static flushing only and the engine should not be run using that method. (My Yamaha manual says that) and gives instructions for both methods so whichever method you use.....if you follow the instructions there should be no warranty issues. That fitting Pretty much by-passes the pump so the pump won't be getting that much needed cooling and lubrication which will dramatically shorten the life of the impellor.

With the muffs you are flushing the system with fresh water right from the start (Intake on the leg) all the way through til the end (exhaust out of the centre of the prop)

The tell tale should flow within say 30 seconds or so. Because the cooling system is empty of water when you start to flush the water pump has to pump enough water up to fill the passage ways around the block, exhaust, intake and hoses so this can take a little time. Your outboard will take a lot longer to overheat at idle than 30 seconds....way longer.

Run it for a fair while as well so the thermostat has time to open, that way you know that everywhere water flows inside your motor is being flushed by the good fresh water. 

I have been using this method for many years on differnt brand outboards and never had any issues with the cooling systems. Just replace the impellor at regular intivals and happy days are had by all.

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