Yanmar 1GM 10 raw water impeller

MILLMAR

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Why is such a small impeller so expensive! Is anybody selling them at a reasonable cost!! /forums/images/graemlins/confused.gif
 
how much are you being asked for?

How are we supposed to know..

Well yes, you are paying over the odds, or no that's quite reasonable <span class="small">(delete as applicable)</span>

yes/no/maybe/never
 
Johnson make alternative impellers (they actually make the pump) which work out at 20-25% of the Yanmar price. (That's been my experience in the Med).

The pump on the latest (YSM) range of Yanmar now unashamedly proclaims itself a Johnson and impeller prices, even Yanmar badged, have dropped accordingly.

When I got a spare for the 3YSM the difference between the Yanmar badged one and the Johnson were only about 5%. However, the lower price Johnson was boxed and also included O-ring/gasket and lubricant, where the Yanmar you got an unboxed impeller and pay extra for the sealing.

You no doubt know that the Mazda 323 oil filter fits the Yanmar, though I'm not certain about the 1GM - it certainly substitutes for the 2GM and 3YSM.

Try this internet link - they're much more reasonable then their other Yanmar colleagues on consumables (not so on spare parts)

http://www.marine-power.co.uk/catalog/
 
I keep posting this message - USA prices for Yamnar parts are about the same in dollars as we pay in Sterling.

The only difference must be in the mark-up in the UK.

Keep complaining and finding alternative sources until they get the message! If you pay the inflated prices - they have no incentive to change their ways!
 
How to fix a Yanmar impellor so that it will last say 600-800 hours+++

The neoprene impellor is stuck to the collet with some type of glue that seems to sense when you have forgotten to switch the water on so that when the 'no water' alarm goes off you know that ~five to ten engine hours later the impellor is guaranteed to fail.

Many years ago,in PBO, there was a very short article with a photo that showed a Yanmar OEM impellor with a DIY small s/s screw bolting the impellor to the collet. It was in the days when a new Yanmar impellor failed even before you had installed it!!!! (True!)

Neoprene compounds loose their elasticity over a period. To visually see the rate of degradation take a smallbore pipe (say 1 to 1.5mm dia) from the top of the vented loop U-bend feeding the exhaust knuckle and poke the small bore pipe through someplace so that you can see it trickling onto the deck at 2/3rd full power whilst you are helming. When it stops trickling you know that (firstly) the entire raw water loop needs to be de-scaling and (secondly) if a proper de-scaling doesn't work (and that includes descaling the temperature sensor) that it's time for a new OEM (Johnson?/Jabsco?) impellor ..... Mine with a DIY s/s screw averaging 160 engine hours a year is still pumping loadsa water after 6 years /forums/images/graemlins/smile.gif
 
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