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    Help on lower unit propeller install older Mercury XR2 Black Max

    Hi, recently had a lower unit resealed etc after a difficult time getting the older prop off. Had the original propeller fixed up and rehubbed and fixing to install. The motor is a older 87 mercury xr2 black max. I have a thrust washer, the prop, the nut and locking washer. I noticed...
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    flushing Mercury 150 xr2 to improve water flow in engine

    Hi, what is the recommended procedure for flushing out a Mercury 150 xr2. I want to make sure any mud or sand that I might have gotten from being stuck (in the mud and sand) does end up clogging up the motor. are there any ports on the engine side that can be flushed (with hose, etc) without...
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    150 xr2 water pumping issue

    I have an older 1987 Mercury Xr2 150. I recently had a shop take off a difficult prop and redo the bearings and seals and water pump impeller. I was finally able to get the lower unit back on but had a couple of issues. It seems like there is no water pumping through the motor. I have...
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    Oil pump sensor check Mercury Oil Injection

    Hi, We have a measurement on the oil pump sensor that says.. measure the blue white wire to ground and you should have 5vdc +- 1vdc. Also every 2 rotations of the motor, this voltage should drop to less than 1vdc. in my instance, I have 4.75 vdc constant. There is NO DROP every 2...
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    Removing Oil Injection Mercury 150

    Hi, I am considering removing Oil injection on a 1987 Mercury 150 xr2. I have the mercury engine manual and have become familiar with the oil injection system. I am thinking of leaving the injection components in place and just redirect the pumped oil back into the return to the large tank...
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    Mercury oil injection

    I have an 87 Mercury 150 which recently started beeping while the engine was running. This started at the same time that a switch pack went out causing cylinders 2,4 and 6 to not fire properly. I changed both switch packs and the motor is now firing on all 6 but the oil alarm is still beeping...
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    Mercury 150 Oil Injection question(s)

    I have an 87 Mercury 150 which recently had a constant beeping come on while at the same time a switch pack went on causing 2,4,6 not to fire properly. I changed both switch packs and the motor is now firing on all 6 but the oil alarm is still beeping. I checked the voltage on the oil...
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    Mercury 150 Idle Stablizer.. should I disconnect?

    Hi, I have an idle stabilizer on a 1988 Mercury XR2 150. I have heard that I should disconnect it. I have had it on forever but in the last year 2 older original power packs have gone bad. 2 new power packs have been installed and everything is running well. Was wondering if I should...
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    1987 Mercury 150 v6 running slugish and oil injeciton alarm - ignition related

    Hi Recently on the water we moved from one fishing spot where we fished for 2 hrs, moved 30 yards (30 seconds of motor running) and the oil alarm kicked in (beep beep beep over and over). The motor would run but seemed like it was missing and was not running properly. We had a good flow of water...
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    Mercury 150 xr2 question

    Hi, I recently had my boat out fishing (87 Mercury Xr2 150) and when moving the boat 50 feet to a new location after being anchored for 2 hours, an Alarm went off and the motor did not seem to run properly although it ran. It seems like 50 feet and shut a short on time that it would be hard...
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