Mercury xr2 black max

Jul 31, 2009. Messages. 636. Sep 13, 2021. #1. My dad recently purchased a 1992 ProCraft 180V fiberglass fish and ski boat. It came with what I assume is the original matching outboard - a Mercury 150 Black Max. Serial number is 0D145256. Against my advice he bought it without doing a compression test nor an on the water test and they …

water pump (PAID LINK): https://bassproshops.vzck.net/c/2616027/603808/9453?prodsku=100250110-1259560&u=https%3A%2F%2Fwww.basspro.com%2Fshop%2Fen%2Fmercury-m... 1985 Mercury 150 HP. 150XR2. This 150 H.P. Mercury outboard motor was made for the saltwater environment. The piston displacement is 121.9. The bore and stroke are 3.12" and 2.62" respectively. This outboard has starter of the electric type and power steering as well. Your engine's RPM range is important in choosing the right propeller for a ...Revise Search: All Models > Mercury XR2 > 0B290314 - 0C276429 (USA) Find Your Engine. Drill down to the horsepower, serial number range and engine section to get an online inventory of original and aftermarket Mercury boat parts. We carry Mercury outboard motor parts for vintage and current model outboards.Nov 27, 2011 · Mercury XR2 Black Max 150: What year is it? Thread starter Dennybot; Start date Nov 27, 2011; D. Dennybot Cadet. Joined Nov 27, 2011 Messages 15. Nov 27, 2011 #1 If you own a Honda Black Max generator, you know how important it is to have a reliable source of power. Whether you use it for emergency backup during power outages or for outdoor...POPPET VALVE KIT | GLM Part Number: 13810; Mercury Part Number: 803062T1 : Amazon.com : Automotive. Hi, I am in need of a poppet valve for a 1985 Mercury Black Max 150 V6 I cant seem to find the kit I need. The one you listed on here dose not look like mine. Could use some help. My engine s/n is A138750.

Forum Rules. I have a 1985 Mercury 150 Black Max that is overheating as soon as you put the power to it. It will idle at 145 degrees all day but as soon as you raise the RPM's it gets hot and the alarm goes off. It does not cool down after it gets hot. It has a brand new water pump, thermostats and poppet.VALVE, Throttle (6 required per assembly) 1395-6023 - Throttle Valve, NLA [ More info ] $4.00. 10+ In Stock. Revise Search: All Models > V-150-XR-2 > 4868998 - 0A904645 > Carburetor Assembly. Next ». Mercury Marine v-150-xr-2 carburetor assembly parts. Buy a genuine Mercury Quicksilver or aftermarket part.Quicksilver 8M0100526 Water Pump Repair Kit for Mercury or Mariner Outboards and MerCruiser Stern Drives. 4.7 out of 5 stars. 1,352. 700+ bought in past month. $54.11 $ 54. 11. List: $64.25 $64.25. FREE delivery Fri, Apr 26 . Add to cart-Remove. ... mercury 150 black max water pumpMay 21, 2013 · Re: My Merc BlackMax 150 XR2 won't start. Why? If your fuel tank is permanent mounted in the boat, chances are it is 18 gal or more. Your adding 6 gal of fuel with a quart of oil made roughly a 25:1 mix. Add that fat mixture to another 12 gal of 50:1 might average out to about 37:1 total. Hello, It's an old boat so I thought someone could give me some imput on a prop. I bought a project 1987 Checkmate Eluder with a 1987 black max xr2 150. It came without a prop. I don't want to guess and spend a lot trying to get one right. Engine is stock except Boyesen reeds and a 8 inch jackplate. Not going to pull anything, looking for top …Hello i have a 87 mercury xr2 150hp black max. I need info on where to hook up the two wire voltage regulator i can find wiribg diagram for it anywhere. The voltage regulator has two brass bolts for a two wire lead to attach (red and a yellow) wire. Any help would be great thank. The engine charges but im not sure it should charge more then 14 ...

To check a Mercury gift card balance, first turn the card over, and identify the website address listed in the bottom right corner. Access the website, and enter the card number, w...Apr 16, 2009. #1. Mercury 150 V-6 Serial # 1B009. Mercury 150 V-6 Serial # 1B009782. I need to replace the poppet valve. Engine will not warm up at idle. New thermostats were installed. The manual diagram shows and describes the poppet as being located on the bottom starboard side of the powerhead. Could it actually be located on the top center ...The €3 billion ($3.5 billion) project will take seven years to enter in an orbit around the closest planet to the sun, where it will begin to unravel the mysteries of Mercury. A jo...34. Jan 18, 2014. #1. Last summer I bought a 1989 Mercury Blackmax to replace an early 80s Johnson. The Johnson overheated and I got a sweeper deal on the Blackmax which was incredibly clean and had great compression. I brought it home and ran it on a stand. The motor needed some maintenance done such as plugs, waterpump, carbs were …

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The 1950s Classic Mercury Cars Channel covers popular antique Mercurys from the decade. Take a look under the hood of different 1950s classic Mercury cars. Advertisement The 1950s ...Oct 1, 2001 · Fast shipping, and worked great for my 1992 Mercury 135 Black Max. As others have said, there is more parts than most will need. I assume because it accomodates a wide range of motors. Replaced my entire housing, gaskets, and impeller with this kit. Saved lots of $$$ instead of taking it to the marina. Re: 1985 Mercury Black Max 150 XR2. Faztbullet said: It is a combination low speed/high speed spark advance module. Take it off and throw it away as it can damage engine if defective. When you do, do a link n sync. Your WOT timing is probably at 19* now, and without the module should be at 23*. Other than that, the module advances the timing a ...Jul 3, 2010 · Re: 1986 Mercury 150 XR2 Mercury service manual 90-97658 page 1-4: Recommended spark plugs NGK-BU8H*. * = champion QL76V in countries other than USA. My serial number is B169328 model number 1150766 the correct manual for this model is 90-97658 (according to Mercury Marine) This is a 1986 model motor and the info above was taken straight from ...

The motor is a 1989 Mercury Black Max 150. serial - B313046 Here's what happens: First, the boat won't idle, and ... Its an 85 200HP Black max. It seems to have the xr2 advance on it. I had water in cylinder one which new gaskets have seem to have solved. It does not want to idle nor run well. I have only started it on the trailer in neutral.In this issue: Morpheus Space's big raise; Starlink comes to... Antarctica!; News from Firefly Aerospace, Spire and more Hello and welcome back to Max Q. In this issue: By the way…...Jan 8, 2011 · Jan 8, 2011. #1. XR2 Black Max fowls plugs. Our boat is a 1999 18 ft Triton 180 Premier. Our motor is an XR2 Black Max 150 HP. The Serial # is B176785. Our motor fowls the plugs and then it's of course hard to start and does not run really well for quite a long time of full throttle. The motor does clean the plugs or heat up enough to run well ... You have lots to choose from. Any 2.0, 2.4, or 2.5 V6 LU with the right length driveshaft will bolt up. Newer is better, of course, and if you replace a 4 inch lower with a 4.5, you'll need a different prop.Revise Search: All Models > Mercury XR2 > 0B290314 - 0C276429 (USA) Find Your Engine. Drill down to the horsepower, serial number range and engine section to get an online inventory of original and aftermarket Mercury boat parts. We carry Mercury outboard motor parts for vintage and current model outboards.Shop all Mercury Marine 150 hp XR2 Black Max parts now on NAPAonline from batteries, brakes, headlights and windshield wipers to engine, transmission, ignition and steering …Re: 1985 Mercury Black Max 150 XR2. Faztbullet said: It is a combination low speed/high speed spark advance module. Take it off and throw it away as it can damage engine if defective. When you do, do a link n sync. Your WOT timing is probably at 19* now, and without the module should be at 23*. Other than that, the module advances the timing a ...Netflix led the charge in FANG names. And why MRCY is now a hot stock in the defense sector....CNC You have see the Nasdaq 100? That index of Nasdaq-listed, largest-cap non-financi...7,474. Sep 2, 2009. #5. Re: 1985 Mercury Black Max 150 XR2. Faztbullet said: It is a combination low speed/high speed spark advance module. Take it off and throw it away as it can damage engine if defective. When you do, do a link n sync. Your WOT timing is probably at 19* now, and without the module should be at 23*.Drill down to the horsepower, serial number range and engine section to get an online inventory of original and aftermarket Mercury boat parts. We carry Mercury outboard …Shop all Mercury Marine 150 hp XR2 Black Max parts now on NAPAonline from batteries, brakes, headlights and windshield wipers to engine, transmission, ignition and steering parts! 20% Off $125+ Orders - Code: MAY20Hi, What is the factory ( normal ) cranking compression of a Mercury 150 Black Max? ... The XR2 was a 2.0 litre. The XR4 was a 2.4 litre. The XR6 is a 2.5 litre.

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Mercury in CFLs and fish are the best known sources of mercury exposure. Learn about mercury in CFLs and fish and find out which should cause more concern. Advertisement With all t...Aug 14, 2018. #1. gday from down under, OK i have a 150 black max 1989 model with starting issues procedure is as follows had fuel pump rebuilt sweet but just as i thought still wont start when cold it will just keep on winding over till i flatten battery ,choke wont make a difference so i found that if i pull spark plugs squirt a bit of fuel ...Drill down to the horsepower, serial number range and engine section to get an online inventory of original and aftermarket Mercury boat parts. We carry Mercury outboard motor parts for vintage and current model outboards.Sep 25, 2021. #1. I recently bought a bass boat (1987 Procraft 1780) with a Mercury Black Max 150 XR2. After doing a bit of work adjusting the timing, we finally took it out on the water yesterday. At first it was running great, and we were cruising around getting to know the boat as well as the lake. (First time boaters aside from a jon boat ...Sep 13, 2004 · 5,964. Sep 16, 2004. #5. Re: mercury 150hp black max oil injection warning. I would guess the crankshaft drive gear (made of black plastic) is probably failing and the rotational sensor is not seeing the right oil pump rpm's. Pull the pump (no need to disconnect the oil lines) and pull the driven shaft. If it has black shards on it, the drive ... Messages. 27,169. May 26, 2011. #6. Re: 1985 Mercury Black Max - Reed Valves. Reed valves are stainless steel. It would be surprizing to their remains in the airbox. Reed valves are just under the intake manifold. I recommend you look around for the real cause of the powdered aluminum in the airbox.Mercury Tech: Carb to EFI conversion; If this is your first visit, ... Example problem that I personally ran into was.....I ported a 2.5 175 to 225 Pro max specs and ran a 5 pedal front with a laser system with a 225 PM ECU, along with alot of other mods. It ran good, but was rich on top and would have been worse if I didn't have high ...Re: Mercury Alarm Codes, 89 150 Hp Black Max. The oil alarm gets several signals. 1. If the connection to the oil resevoir is closed, it alarms. Test by disconnecting one of the 2 wires. 2. It gets a pulse tranin from one of the switchboxes. I think it is cylinder #2, but it makes no difference.Mechanic's Assistant: I understand your concern about the temperature gauge on your 1986 Mercury XR2 150hp Black Max, and the Marine Mechanic will be able to help you diagnose the issue and determine if the gauge is faulty or if there is an actual overheating problem with your motor. Have you checked the temperature of the engine …

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The only 3 things that would do that is. 1. the stop circuit, which you ruled out by disconnecting the black/yellow wire. 2. the stator, which you will go test. 3 The switchboxes, which are not testable. When trying to figure out a no spark on all situation it is a process of elimination. You start with the stop circuit, move on to the stator.Re: 1986 Mercury 150 XR2 Mercury service manual 90-97658 page 1-4: Recommended spark plugs NGK-BU8H*. * = champion QL76V in countries other than USA. My serial number is B169328 model number 1150766 the correct manual for this model is 90-97658 (according to Mercury Marine) This is a 1986 model motor and the info above was taken straight from ...Look at the engine as a big air pump. If is it not efficient it will show most at low speeds. Your engine has a idle stabilizer, a black box on the front top of the engine. Disconnect it and set the timing in the water where it will idle at about 750 rpm in gear. Which will equal about 1000 rpm in neutral.Feb 21, 2010. Messages. 93. Feb 23, 2012. #1. the way im reading everything so far is my pole setting should be set on 6p,correct? i have a 1986 150 xr2 with a 23 pitch prop and my tach reaads between 5400 -6000 rpms , depending on the trim adjustment. there is several adjustments on the back , but want to make sure its set right.Available to Order: Usually ships within 10 days. 414-2770 - Mercury Wiring Harness, Replaces Many Original Numbers [ More info ] $238.70. 10+ In Stock. #1. 84-69236. WIRING HARNESS, INTERNAL (1 required per assembly) UNITED STATES 4121435 AND UP AUSTRALIA 8028040 AND UP CANADA 7048783 AND UP. #3.1985 mercury Xr2 150. Great will buy from Crowley marine again. Jul, 01 2019 by Gary. 1 5 5 ... 1982 Mercury 150 Black Max. Repair Difficulty Easy Repair Time 30 to 60 mins ... mercury 150 max. Jul, 08 2016 by daniel. 1 5 5. May, 02 2016 by Alan. 1 5 5. Great shopping experience and excellent customer service!! ...4,530. Apr 16, 2012. #2. Re: 150 Black Max idle too high...how to adjust? The idle is set by adjusting the intial timing. 750 RPM in gear means in the water and under normal load. On the hose out of the water an idle of 850 is recommended. The intial timing adjustment is done using the single screw located just below and to the right of the ...Apr 3, 2010. #3. Re: Black Max 150 XR2 Stalls. Compression in all cylinders is 120+. 2 were 122. Spark appears to be at all cylinders. Limited testing ability there. Fuel is new. I emptied all old gas before initial crankup. I put some Mercury Quikleen in the tank before adding new gas.Carburetor Part List: Carburetor GSKT 18-7005, Float 18-36956, Needle/Seat 1395-7824 #champion #blackmax #mercury black max 150hp #mercuryoutboards #outboa...If you've found that your MacBook Air's SSD is just too darn small, the folks over at Other World Computing have a kit to help you replace it with a larger one—and then turn the ol...Sep 4, 2010. Messages. 4,845. May 19, 2011. #2. Re: What was the stock spark plug for the 150 hp mercury xr-2 black max? Nate; I got the s/n (B176785) from …Cdi Switch Box for Mercury Marine Power Pack V-135 / V-150 /V-150 XR2 /XR4 /V-150 XR6 / V-175 / V-200/V-220 ; Cdi Switch Box for 322-7778 mercury 3 cylinder /6cyl /blackmax 175hp power pack ; Compatible with many models, please see the detailed description ; The CDI Switch box for Mercury Outboard Come w/Ground Wire Attached ….

MODEL YEAR CHART. Mercury did not publish model year information for 1997 & newer outboards. The year is now normally noted on the serial number sticker. NOTE: Mercury DOES NOT Use Model Years For Parts Lookup. This Chart Is For. Mercury's software. So if your serial number is "01234567" you would use only.Carburetor Part List: Carburetor GSKT 18-7005, Float 18-36956, Needle/Seat 1395-7824 #champion #blackmax #mercury black max 150hp #mercuryoutboards #outboa...This Mercury Head Gasket will fit all V 150 5866777 - 6042945, V 150 XR2 5866777 - 6042945 Early Style WSM 505-39. Please note: Gaskets are sold each, 2 required for this model. Please check OEM#"s below for correct application of the item Replaces OEM# 27-79583-1 At Pwc Engine, Inc. we offer top name brands including …Nov 26, 2010 · You have lots to choose from. Any 2.0, 2.4, or 2.5 V6 LU with the right length driveshaft will bolt up. Newer is better, of course, and if you replace a 4 inch lower with a 4.5, you'll need a different prop. Find many great new & used options and get the best deals for Mercury Xr2 Black Max 150 HP OUTBOARD Lower Unit at the best online prices at eBay! Free shipping for …Yes the XR2 would rev between 5500 to 6000 compared to 5000-5500 of the standard blackmax. It is slightly ported, 200hp exhaust and jetted carbs. It will give you a slightly better performance then the black …Messages. 101. Jul 17, 2015. #1. I just purchased a 1984 Mercury black max 150hp outboard from a person I knew that had mainly spent most of its life in the garage , runs great and has even good compression on all cylinders ! My question are my boat is rated for a 200hp I have a 1997 Ranger 518svs Comanche I'm installing it on and I would like ...The 1940s Classic Mercury Cars Channel covers popular antique Mercurys from the decade. Take a look under the hood of 1940s classic Mercury cars. Advertisement The 1940s Classic Me...VO2 max is the amount of oxygen your body can use, per kilogram of body weight, per minute. Learn about determining VO2 max. Advertisement It is fairly well-known that with regular...Which online-only banking solution is better for you? Read our review to compare Mercury and Novo’s features, use cases, and fees. Banking | Versus REVIEWED BY: Tricia Tetreault Tr... Mercury xr2 black max, Jul 11, 2013. #5. Re: Mercury 150hp Black Max Serial Number 5204056 what year? This motor has a enricher valve on top carb that has a fuel line feeding into bottom of bowl no choke flaps so whats that mean? A) Someone updated motor with newer carbs to get it to start B) Midsection has a later model powerhead installed., TechCrunch's weekly newsletter dedicated to all things space, including launch, satellites, space stations and more. Hello and welcome back to Max Q! In this issue: Relativity Spac..., Buy JETUNIT Stator For Mercury 174-5456 Outboard 150 Black Max XR2,90,115,175,200 HP 398-5454A2 5454A6 9-Amp 6 Cylinder 2 Stroke 1976-1989: Stators - Amazon.com FREE DELIVERY possible on eligible purchases, Mercury in CFLs and fish are the best known sources of mercury exposure. Learn about mercury in CFLs and fish and find out which should cause more concern. Advertisement With all t..., 1,557. Feb 8, 2014. #2. Re: 1986 mercury 150 xr2 blackmax charging upgrades. Sure. You just need a 40 amp stator, a 40 amp flywheel , a coil mounting bracket, two 20 amp voltage regulators, and a different exhaust divider plate and a flywheel cover. Pretty much an entire 2.5 liter charging system. Buy it piece by piece new and you'd spend a ..., Drill down to the horsepower, serial number range and engine section to get an online inventory of original and aftermarket Mercury boat parts. We carry Mercury outboard motor parts for vintage and current model outboards., Hello i have a 87 mercury xr2 150hp black max. I need info on where to hook up the two wire voltage regulator i can find wiribg diagram for it anywhere. The voltage regulator has two brass bolts for a two wire lead to attach (red and a yellow) wire. Any help would be great thank. The engine charges but im not sure it should charge more then 14 ..., Search Black History: by Month/ Day / or Keyword : First African American Mayor of Washington D.C. enters office. Walter Washington (April 15, 1915 – October 27, 2003) …, Nov 26, 2010 · You have lots to choose from. Any 2.0, 2.4, or 2.5 V6 LU with the right length driveshaft will bolt up. Newer is better, of course, and if you replace a 4 inch lower with a 4.5, you'll need a different prop. , Black Max 3-Blade Aluminum, 15.5" Dia. X 18" Pitch, Right Hand Rotation. Part number: 11324A45. Pitch: Description. For good overall performance and value, the Black Max is …, Last week, we wrote about one way to get perspective on your problems by comparing them to, well, the size of entire planets and galaxies. Last week, we wrote about one way to get ..., mercury 150 hp black max, xr2, no prop, good motor , been in storage !, make offer !!!!! CALLS ONLY!! , 863 712-2O67 NO E-MAILS PLEASE !!!! MERCURY 150 HP BLACK MAX XR2 - general for sale - by owner - craigslist, Apr 16, 2009. #1. Mercury 150 V-6 Serial # 1B009. Mercury 150 V-6 Serial # 1B009782. I need to replace the poppet valve. Engine will not warm up at idle. New thermostats were installed. The manual diagram shows and describes the poppet as being located on the bottom starboard side of the powerhead. Could it actually be located on the top center ..., 150 Mercury Black Max XR2 Acceleration On a 1988 Procraft Fish And Ski (Our first boat) - YouTube. Ronny Dieck. 106 subscribers. Subscribed. 149. 118K views 14 years ago. Here is our boat..., What is the factory ( normal ) cranking compression of a Mercury 150 Black Max? My engine has 149 to 151 on all cylinders. I have no history on the engine, except that it is said to have come off of a pickle fork boat. ... It is a 2.5 XR2 Black Max. I don't know what year it was made. There is no data plate on it, with engine number. For some ..., Jun 8, 2010 · I bought the boat/motor two weeks ago and had it out a few times already. 1987 Four Winns Horizon 190 (18.5' open bow runabout) 1987 Merc. Black Max 150hp XR2 (14" x 19pitch Prop) When I first started the boat during the water test I noticed that the tell tale stream wasn't as steady as it was on my 1994 50hp Evinrude. , Mercury black max xr2 150 hp 1984. Not likely, but it doesn't hurt to get it out of the way for testing. First disconnect the advance module and try for spark. Then disconnect the black/yellow trace wires that goes to each switchbox. (That's what the cdi spark coil drivers are called.) and try again., 1986 1987 MERCURY 150 hp XR2 Black max oil injected decal set made for a Mercury Outboard cowling 150hp, DECAL SET BLACK 150 1986 1987 MERCURY 150 hp L: 1150412BD L, 7150412ND L. 1986 1987 MERCURY 150 hp XL: 7150422ND XL, 1150422BD XL. 1986 1987 MERCURY 150 hp EXLPTO: 1150746 EXLPTO, 7150746 EXLPTO. 1986 …, Jun 10, 2013 · I hunted all over the block and everywhere I could to find the serial number on my Mercury Black Max 150 XR2. I finally found this. "Every Mercury outboard has a serial number label located on the transom bracket area of the engine." So, I looked for a label and sure enough I found a metal label on the port side of the transom bracket with the ... , Drill down to the horsepower, serial number range and engine section to get an online inventory of original and aftermarket Mercury boat parts. We carry Mercury outboard …, Re: Mercury Black Max 150 xr2 wont get on plane or get over 2000rpm The stator has low speed and high speed windings for both switchboxes plus a set of charge coils for battery charging. Your symptoms are those of a failing high speed winding, not making enough voltage/current to fire the ignition at higher speeds., Mar 1, 2014. #1. I have a mercury 150 black max xr2 2.0. I bought the motor used and when I got it rigged and wired went to pump primer bulb and gas was pouring out carbs (middle and top worse than bottom) so I took them off and checked them really good no trash and needles and floats were perfect. So I set the float adjustment at 1/8 of an ..., 150 black max 2.0 xr2 (not a mercury racing motor - late 80s) 150 xr2 2.0 race motor (sleeved down 2.4 block? - late 80s to early/mid 90s) this is the one with the bucket cowl with 2 air inlet vents per side 200 xr2 2.0 race motor (sleeved down 2.5 block, mid 90s on). 200 at the prop shaft according to merc and good for 7k. This was the 3 vent ..., Sep 25, 2021. #1. I recently bought a bass boat (1987 Procraft 1780) with a Mercury Black Max 150 XR2. After doing a bit of work adjusting the timing, we finally took it out on the water yesterday. At first it was running great, and we were cruising around getting to know the boat as well as the lake. (First time boaters aside from a jon boat ..., i have 1986 mercury black max xr2 150 on my fishing boat. when the motor is cold i have fire on 1,2, but no fire on 3,4,5,6.take a blow dryer and warm motor up some and u will get fire on 3,4,5,6 and motor will start,and as long as u keep the motor warm by starting every so often the motor will start and run great.if u let motor get cold and no fire …, I hunted all over the block and everywhere I could to find the serial number on my Mercury Black Max 150 XR2. I finally found this. "Every Mercury outboard has a serial number label located on the transom bracket area of the engine." So, I looked for a label and sure enough I found a metal label on the port side of the transom bracket with the ..., recently the power trim system on this older boat (1987 Mercury 150 XR2 Black Max) has started to leak and the fluid is a milky red indicating water in the system. Since the water is brackish I want to drain the system asap and get the water out. The leak is at the top seal of the reservoir on the right side where the two metal pieces come ..., 6. Mar 11, 2004. #1. My mercury 150 XR2 Black Max had sit for about 6 months, when I cranked it I had no stream coming from the little tell-tail port. I replaced the impeller and it seemed ok. Well it sat for about another 6 months, so really maybe an hour of running during that time, and now I started it a couple of days ago, it was running ..., The Other Two returns May 4, just in time to send HBO Max into streaming oblivion. I regret to inform you that this is the last time I’ll be able to let you know what new shows and..., Mercury Black Max XR2 150HP won’t rev out. Thread starter Brindal; Start date Jan 20, 2021; B. Brindal New member. Jan 20, 2021 #1 Hi, wondering if any one can help me out with my motor issue. I have a Mercury Back Max XR-2 150hp. Serial No 0A166611. When I purchased it the gent said the it ran fine one season then wouldn’t run …, I have a 1984 mercury black max 150. from idle when you go toMercury 150 max power load under boat replied ago years We have a 1986 mercury xr2 black max 150, and its running hot, and weMercury 150 outboard wiring diagram » wiring core., What is the factory ( normal ) cranking compression of a Mercury 150 Black Max? My engine has 149 to 151 on all cylinders. I have no history on the engine, except that it is said to have come off of a pickle fork boat. ... It is a 2.5 XR2 Black Max. I don't know what year it was made. There is no data plate on it, with engine number. For some ..., 34. Jan 18, 2014. #1. Last summer I bought a 1989 Mercury Blackmax to replace an early 80s Johnson. The Johnson overheated and I got a sweeper deal on the Blackmax which was incredibly clean and had great compression. I brought it home and ran it on a stand. The motor needed some maintenance done such as plugs, waterpump, carbs were …