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1994 Merc 7.4 Carb impeller Kit
- tonyiiiafl
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- Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
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1994 Merc 7.4 Carb impeller Kit
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- Vessel Info: 1989 Carver 3807 Aft Cabin
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Re: 1994 Merc 7.4 Carb impeller Kit
Don't forget that the oil in that pump assembly needs to be replaced periodically. Make it part of your regular maintenance by replacing it every time you replace the impeller.
- tonyiiiafl
- CYO Supporter
- Posts: 902
- Joined: November 19th, 2015, 4:00 am
- Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
- Location: Cape Cod, MA
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Re: 1994 Merc 7.4 Carb impeller Kit
EVERY year I remove the fuel pump and replace the gear lube in the boss part of the pump. I had a failure on one and saw it was all washed out and like water. So now it is part of the preseason maintenance. EVERYONE should heed your advice on this!
I believe I have pump 46-807151A8. Would I be looking for kit 46-807151A14?
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- CYO Supporter
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Re: 1994 Merc 7.4 Carb impeller Kit
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- CYO Supporter
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Re: 1994 Merc 7.4 Carb impeller Kit
Check the wear plate, if it's grooved get a new one or you can flip those over. Also check the bottom of the inside of the pump housing, that will indicate if you need a new housing or not.
- tonyiiiafl
- CYO Supporter
- Posts: 902
- Joined: November 19th, 2015, 4:00 am
- Vessel Info: 1994 Carver 39 Cockpit Motor Yacht
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Re: 1994 Merc 7.4 Carb impeller Kit
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- CYO Supporter
- Posts: 5952
- Joined: July 10th, 2015, 9:58 pm
- Vessel Info: 1989 Carver 3807 Aft Cabin
- Location: Ontario, Canada
- Has thanked: 453 times
- Been thanked: 1662 times
Re: 1994 Merc 7.4 Carb impeller Kit
- mjk1040
- Admiral
- Posts: 1518
- Joined: July 30th, 2015, 8:15 am
- Vessel Info: 1998 355 AC/MY "Deja Vu"
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Re: 1994 Merc 7.4 Carb impeller Kit
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
- bud37
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Re: 1994 Merc 7.4 Carb impeller Kit
tonyiiiafl wrote:Source of the post I just am leery of putting the pump in with a 2 year old impeller that probably has a "set" in it.
I agree, what I have done was take the new impeller out to be on the safe side and replace with a new one then keep that one as a spare, you can tell if it will be ok later if the "set" straightens itself out.
- mjk1040
- Admiral
- Posts: 1518
- Joined: July 30th, 2015, 8:15 am
- Vessel Info: 1998 355 AC/MY "Deja Vu"
- Location: Savannah, NY
- Has thanked: 9 times
- Been thanked: 242 times
Re: 1994 Merc 7.4 Carb impeller Kit
I'd Rather Be Boating!
1989 Sea Ray Seville
1986 Carver Mariner 32'
1990's Thompson 22' Cuddy Cabin
1990's 4Winns 245 Vista Cruiser
1980's Thompson 19' Open Bow
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