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Old 21 September 2016, 05:59   #1
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Flushing tohatsu 9.8 2 stroke

Hi all

When flushing my tohatsu 9.8 is it just a case of attaching the flush plug, connecting up a hose and running the engine for 5 minutes?

I'm reading about muffs and blocking the intakes and so on. Do I need muffs if I have the flush plug adaptor ?

Thanks
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Old 21 September 2016, 08:23   #2
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Stick it in a tub, I think it does a better job and a lot less faff.
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Old 21 September 2016, 09:57   #3
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Yeah probably right paddlers, just thought it would be easier with one of these flush plugs if doing it regularly
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Old 21 September 2016, 11:36   #4
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Quote:
Originally Posted by duggie12 View Post
Hi all

When flushing my tohatsu 9.8 is it just a case of attaching the flush plug, connecting up a hose and running the engine for 5 minutes?

I'm reading about muffs and blocking the intakes and so on. Do I need muffs if I have the flush plug adaptor ?

Thanks
I assume you're talking about a connector for a garden hose coming off the head somewhere? If so, then no you do not need muffs, and you do not need to run the motor (most mfr's say specifically *not* to run the motor when flushing this way, though Suzuki's website had an instructional video showing them running, even with the text saying not to - go figure.) Connect up the hose, and let the water flow through for 5 to 10 minutes (or however long your patience allows.)

If you run the hose to a set of muffs, you *may* need to block off any water intake inlets that are not covered by the muffs (I used duct tape.) Some motors only have a pair of intakes on the side of the leg (which means you're good to go); my Honda 40 had those plus an intake on the bottom of the anti-ventilation plate (which needed to be blocked.)

Hope this helps;

jky
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Old 21 September 2016, 13:46   #5
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Hi jky, not sure what you mean about the head? There is a flush adaptor you can screw in at the bottom, see photo. I connected the hose earlier, turned it on and water just poured out of the intakes, I was expecting it to come out of the tell tale, the same as when running it normally. I'll tape the intakes up and give it another shot tomorrow.

I've read on line elsewhere to run the engine when flushing - so I'm glad I asked.

Thanks
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Old 21 September 2016, 13:46   #6
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The wee gold thing is the flush adaptor
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Old 21 September 2016, 13:56   #7
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I don't like muffs mainly low water pressure were we are so I use a tub the water warms up so shifts salt better my Suzuki has a plug further up on the leg don't run the engine when using it because manual says not and I don't think the pump impeller gets lubricated when you do.

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Old 21 September 2016, 14:20   #8
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Personally find it easier/better to flush in a bucket both my 9.8 Tohatsu and Suzuki even though both have flushing plugs.
Pop them in a tub, fill with water, fire up and run up to temp to open stat. Have a cuppa while all this going on. Flushes whole system and quieter to boot too.
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Old 21 September 2016, 14:40   #9
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On this subject I also tipped in a couple of litres of cheap white vinegar (eBay) and noticed an immediate increase in the flow from the tell tale.
Might have been a complete co-incidence but when I pulled the the covers of the thermostats they were spotless.
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Old 22 September 2016, 01:44   #10
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You can run it on the flush adapter but nothing more than tick over, but a large wheely but for me
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