WME 95 carburetor settings

tboydva

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Mar 29, 2008
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I was unable to search for this issue (but "95" is a tough thing to search - when you want a carb number). I have a 2004 Mercury 40 Jet. I purchased my service manual in 2010. Decided to rebuild the carbs this winter. I was looking through the manual in preparation and the specs (jet and idle screw preset) are not listed for my carb model (95-1, 95-2, and 95-3). The service manual caps out with the 1998 model year! I called mercury manuals from my purchase receipt and after speaking with the technical specialist, my manual is the only one produced for my 2004 motor (even though it was published in 2002). The technician said my carbs should be compatible with the 58 number carbs. I asked if the jets and screw adjustments are the same and he said, "yes." Can anyone confirm this? The jet should be 0.060 in and the initial preset screw 1-1/8 turns for a 58 model carb. Is this correct for a 95 model carb? Any help would be greatly appreciated.

Thanks!
 

Laddies

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Sep 10, 2004
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12,218
Re: WME 95 carburetor settings

I can not tell you what the basic setting for you carbs are but anytime you clean a carb always screw the idle needles in and count the turns so after cleaning they can be reset to the same spot. This will usually be closer than the base setting if some one has not tinkered with the setting first.
 

tboydva

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Mar 29, 2008
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Re: WME 95 carburetor settings

Laddies - I'm embarrassed to admit that I never thought of your solution! This is the first Merc I've owned since the mid 80s (a '66 model year which was the worst mechanical device I ever worked on - I almost think they designed it so no bolt was able to be reached by a wrench without taking the entire motor apart!). My OMC manuals are explicit for each step in rebuilding carbs, so I've gotten used to disassembling, then following the manual for reassembly and adjustment(s). I'll just record the number of turns for each carb before disassembly... Brilliant.

Gerry, my serial number is: 0T840803. It's a 2004 model year. The carbs are stamped 95-1, 95-2, and 95-3. The manual doesn't cover that model, but as I said, the technician said it's just like a 58 model...

Thanks to both for replies!

Tom
 

carholme

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Sep 4, 2010
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4,845
Re: WME 95 carburetor settings

That's why I was confused as your first post says it is a Merc 40 Jet.

That s/n comes up as:

MERCURY - ( 60 H.P. (2004 ))
Serial No: 0T840803 Model No: 1060372CD

Is it a 60 hp and what is the number of the manual you are using? Is it 90-852572R1?

Gerry
 

tboydva

Petty Officer 2nd Class
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Mar 29, 2008
Messages
167
Re: WME 95 carburetor settings

Gerry, sorry. I made it more confusing than necessary. It's a "60/40" jet. It's a 60 HP powerhead. Due to efficiency, it's 40 HP at the jet pump (vice 60 for a prop engine).

The manual is: 90-852572R02. According to Mercury, that's the only service manual for this motor. It has a jet pump section in the manual, so in that respect it fits. Just doesn't cover the newer carbs...
 

carholme

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4,845
Re: WME 95 carburetor settings

The -58 carbs are the T7/T8 and T9 (top/mid/lower) which have been supreceded to the -95 carbs, T22/T23 and T24 (top/mid/lower).

Therefore the settings for the -58 carbs listed on page 3B-1:

60 Electric 1998 58-1,-2,-3 0.060 in. 1-1/8 are correct for the -95 carbs

If you need qualification of the T7/T8 and T9 carbs as -58, send me a PM with an email address as the parts list which still contains these numbers is not allowed to be talked about on this site.

Gerry
 

tboydva

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Mar 29, 2008
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Re: WME 95 carburetor settings

Understood on posting info from manuals - copyrights and all. When you pay $60 for a service manual, you should be able to expect accurate information. I'm sure most corporations would rather pay for copyright lawyers than technical folks to push service manual addenda to their customers. OK, venting over. PM on the way...
 

Silvertip

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Sep 22, 2003
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Re: WME 95 carburetor settings

Think about this. The manual was probably accurate the day it was printed. Over the years any manufacturer (auto, truck, bus, airplane, and yes, outboard) makes changes to their products. Since they have no idea where their manuals end up (except for factory service shops) updates are provided only to them since they know who they are. Besides, it is the feeling of most manufacturers that retail buyers don't service their products anyway. Those of you who do your own work need to know the ways to get this updated information if it is available. As for idle mixture adjustment, other than an initial setting to get the engine started, there is no "fixed" setting since each engine will be slightly different. The engine should start at one turn our, two turns out or 1-1/2 turn out. You fine tune each carb in sequence from that point.
 

tboydva

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Mar 29, 2008
Messages
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Re: WME 95 carburetor settings

Silvertip, I understand what you're saying. I purchased my manual from Mercury. The manual date is 2002. I have a 2004 outboard. The manual has never been superseded (yet they still make jet outboards). I would just expect them to bundle applicable updates when you order a manual in 2010 for a 2004 engine (when they're selling you a 2002 manual). If they offer manuals to consumers, shouldn't we get the updates they send factory service shops? My OMC manual (sold by BRP) came with several updates - and they package updates for their manuals with parts orders. Mercury did send a manual addendum for my 1998 Mariner when I ordered a water pump kit - so perhaps the carb kits will come with update(s).

Again, I do understand what you're saying. I'm just making the point that Mercury, BRP, etc ought to be getting this information out as widely as possible. There are plenty of folks who like doing routine maintenance on their equipment. The executives probably see their company making more money if people are "forced" to go to factory service shops to have their work done. But someone like me, who uses 1 1/2 turns instead of 1 1/8 because the manual isn't clear - then complains and rants on public forums how crappy Mercury engines are -this perhaps isn't the best example for the reason you point out - but I'm just saying the company stands to loose a customer when they could be gaining customers by actively supporting end-users. Several companies make their owners manuals available as pdf. That's part of the reason I got a Tohatsu kicker last year. I was able to look over maintenance requirements and get to know the equipment before purchasing. Had to spend $20 to get a Mercury owner's manual...
 

cheapster

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Mar 22, 2009
Messages
8
Re: WME 95 carburetor settings

I have a 94 40 horse the mechanic I talked to said start at 1-1/8 but dont go over 2. I would check what their set at and install the new ones the same. I had to open mine 1-1/2 turns due to hard starting after it was warmed up. That fixed it right up.
 
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