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  #21  
Old 07-12-2011, 07:42 PM
Skipper
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Quote:
Originally Posted by jude09 View Post
Did you have to remoce the tank
You must at least disconnect the straps and pull it out to clear the sending unit. Really not that big of a job. Have to first remove the combing pads in the back corners. Then the carpeted back filler board. There are just clamps that lock onto the tank. Unscrew the clamps and the only thing left holding the tank in place is the filler hose.
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  #22  
Old 07-19-2011, 07:21 PM
monsoon monsoon is offline
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Join Date: Aug 2007
Boat: 1998 Prostar 190
Location: East Coaster
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Just did this repair on my '98 Prostar 190 a couple weeks ago after reading this thread. After disassembling the unit, I found only a single loose magnet inside the cylinder. I figured I had dropped the other one when taking it apart. Looked around nervously on the floor for a while, then inspected the float and saw only one end of the slot showed signs of old glue where only the single magnet would have been mounted. I carefully sanded the outside radius of the float to reduce its size and allow it to move freely up and down inside the cylinder, remounted the magnet with super glue, reassembled the unit, and it's been working fine for two weeks now.
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  #23  
Old 07-19-2011, 07:43 PM
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jeverett jeverett is offline
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Boat: Prostar,190,1994,351
Location: Pacific Northwest
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It was a heck of a lot easier just to buy a new one from Skidim.
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  #24  
Old 07-19-2011, 07:59 PM
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ricford ricford is offline
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Join Date: Feb 2011
Boat: 1996 Prostar190
Location: Muskoka, Canada
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But a heck of a lot cheaper and satisfying to do it yourself. Just completed this fix using this thread two weeks ago on my 96 prostar. Worked like a charm, and I borrowed the super glue so it didn't cost me a cent. Thanks very much!!!
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  #25  
Old 07-19-2011, 07:59 PM
monsoon monsoon is offline
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Join Date: Aug 2007
Boat: 1998 Prostar 190
Location: East Coaster
Posts: 16
"Easier to buy a new one"... Maybe... I'm not knocking Skidim here, I love the place and how helpful they are, but they haven't built a very good database on what model sending unit fits what year and make MasterCraft yet. After asking me if i had a 2 or 3 wire unit, and after having to get back to them the following week (boat and lake house is an hour away from where I live) they then asked me how deep my tank was. Seems there are 3 or 4 different length units to choose from. I told them I'd have to get back to them again the following week. I took a tube of super glue with me and while i had the unit out to see how long it was, I opened it up and did the repair.

If you're going to by a new unit, you'll need to know these two things.

Last edited by monsoon; 07-21-2011 at 08:04 AM.
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  #26  
Old 03-31-2013, 08:17 AM
725mastercraft 725mastercraft is offline
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Join Date: Mar 2013
Boat: 1993 MasterCraft Prostar 190
Location: East
Posts: 3
I have a 1993 PS190 and my fuel level sender did not look exactly like the one in the OP picture. In fact, the bottom of the unit was sealed with no way to disassemble it without tearing it apart. So, I ended up buying an brand new MasterCraft fuel level sending unit for 70$. The new one looks more sophisticated in the fact that it is a much narrower aluminum tube. Apparently there is no float inside the new one. Worked very well. Price for a brand new Mastercraft fuel sending unit, 70 bucks. Price for a brand new prostar190, 60 some K. Fixing a 20 year old boat myself, priceless!
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  #27  
Old 03-31-2013, 09:31 AM
mbeach mbeach is offline
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Join Date: Feb 2005
Boat: 1998 sportstar 19
Location: Iowa City, IA
Posts: 552
magnets must repel each other and are placed at ends of float. easy fix as long as the polarity of the magnets is oriented correctly.
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  #28  
Old 03-31-2013, 01:52 PM
FrankSchwab FrankSchwab is offline
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Join Date: Aug 2004
Boat: 1998 Maristar 200VRS
Location: Phoenix, AZ
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After seven years, mine broke again. Rather than take it apart and fix it again, I ordered a unit from Wema that seems nicer. Everything is protected inside the stainless steel tube, except the float (and presumably magnets), which have a bit more clearance on the shaft than the float on the last one did inside so should be less likely to hang up.

Worked fine so far on the one trip we've done.
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  #29  
Old 06-10-2013, 02:26 PM
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Jerseydave Jerseydave is offline
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Join Date: Jul 2004
Boat: 2005 X-STAR & 1993 Prostar 190 Limited
Location: Jersey
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So how is everyone's repair holding up? My '93 prostar sending unit needs repair or replacement, but I only use the boat 10-12 times a year and I want to fix it so it lasts for many years.

Just mostly wondering if the super glue (or epoxy) will last long since it's exposed to gas.
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  #30  
Old 06-10-2013, 03:34 PM
catamount catamount is offline
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Join Date: Feb 2012
Boat: 1987 ProStar 190
Location: Vermont
Posts: 413
I was going to attempt the repair but found my sender beyond repair. I ended up buying a brand new ISSPRO 10" unit from https://www.dieselperformanceparts.com/ for $44 + shipping.
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