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Old 18 February 2012, 11:35   #1
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Mariner 10hp year & Primer question

After a 400 mile cruise to Essex and back I now have avery nice 10hp Mariner. Serial number is OP025566 , but as my main PC 'wont start' I cant get to find the year yet or the impellor number

Other question is about the primer......seem slike when you pull the knob it should press down on a small blue 'button' on the side of the carb to ( I assume ) pump fuel in for starting ..but the blue bit is stuck. There are 4 screws to take out to ( I assume) get to a diaphram under the cover which may be the culprit - not a biggy but just after some knowledgable guidance.

A squirt of petrol in the carb and it fired up fine 1st pull !!!

PIcs to follow.
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Old 18 February 2012, 12:11   #2
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yes there is a repair kit available be carefull as there is a small ball bearing in the bottom of that small pump, if that is left out or lost it will run very rich,i would also recomend that you put a SMALL dab of grease on the screws when you are ready to re-fit them,team tip it is an easy job and clean the carb as well at the same time.
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Old 18 February 2012, 12:19   #3
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Got a pic? I may have a pdf manual for you.
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Old 18 February 2012, 12:21   #4
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its also a 1999/2000 model year when or if it was registered i cannot see on the factory web site
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Old 18 February 2012, 13:39   #5
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Cheers guys .A few pics attached of the offending primer & engine .. currently on Avon rover ona little trailer ....a bit of fun ...

NO sign of any bearing in there...primer has come off with no drama . got the spring to hold the diaphram up ....but just wont move at all !

Is it bad if I just get the hammer out....
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Old 18 February 2012, 13:50   #6
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Quote:
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yes there is a repair kit available be carefull as there is a small ball bearing in the bottom of that small pump, if that is left out or lost it will run very rich,i would also recomend that you put a SMALL dab of grease on the screws when you are ready to re-fit them,team tip it is an easy job and clean the carb as well at the same time.
Cheers Al - seems like this is part 1395-8237072.... not cheap ! but at least I can see it now the PC is working (ish) .

What on earth has caused it to seize ? Any milage in trying to free it ? The gasket seems fine just blue plastic locked into the top housing....
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Old 19 February 2012, 05:58   #7
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free it of as it is there to help with removing the flat spot on acceleration and to inject extra fuel when using the choke and there should be a small ball bearing inside,the reason for siezing is usually water in the fuel
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Old 19 February 2012, 06:35   #8
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Where did you get the serial number from as the transom bracket is not from the same leg - or has the leg been re-sprayed.

What does the core plug read ?
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Old 19 February 2012, 07:46   #9
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Pete

Where did you get the serial number from as the transom bracket is not from the same leg - or has the leg been re-sprayed.

What does the core plug read ?
Serial number is from the core plug.....Its defo had the bracket replaced at some point . I have 'been told' the engine & boat is an ex ' beach rescue' boat from somewhere (maybe Essex way) and engine & boat show signs of that .

But will keep me off the streets for a few weeks fixing things ...
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Old 19 February 2012, 07:48   #10
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free it of as it is there to help with removing the flat spot on acceleration and to inject extra fuel when using the choke and there should be a small ball bearing inside,the reason for siezing is usually water in the fuel

Cheers Al , have tried all the 'soft' methods for freeing it .....do I resort to harder taps with a hammer now ?
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Old 19 February 2012, 09:29   #11
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it is a delicate go gently with it , gentle and patient, and the ball bearing should be on top of the spring when you remove the brass plug on the bottom
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Old 19 February 2012, 11:02   #12
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it is a delicate go gently with it , gentle and patient, and the ball bearing should be on top of the spring when you remove the brass plug on the bottom
Hmm - am thinking we have wires crossed...

I undid the four screw on the corners of the cover , this then lifted off leaving the spring in the housing ( on the carb) . The blue plastic 'bit' that is supposed to move, but isn't - was stuck fast in the cover.

Blue plastic bit ( plunger ? ) has a needle on the bottom that clearly drops into a 'hole' when priming and it also holds the diaphram between two plastic washers - which force the deiaphram up/down and suck fuel ...

Some gentle (ish) tapping removed it and freed it . Starts first time now .. just need to get the impellor , find some water and off we go !
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