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Switch Assembly 87-12886A6

Satisfaction rating 5 out of 5 (91 Ratings)
$27.95
You save $2.55. (8%) $30.5
5+ IN STOCK
Ships Immediately
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Product Description

Mercury factory part. Search for more factory parts & parts diagrams.
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91 Product Reviews

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40hp elpt

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Knowledge of parts person and helping identifying what part I needed
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Problem fixed: Beeping

Thermal couple and oil level sensor

Always great service
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Mercury Mariner 75hp

Crowley gave a delivery date and stood by it awesome
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Mercury 115

Repair Difficulty
Easy
Repair Time
1 to 2 hours
Awesome as usual
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Problem fixed: Low oil beep

Bad sensor in oil tank. Removed tank and replaced sensor.

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115 Mercury outboard

Repair Difficulty
Easy
Repair Time
30 to 60 mins
Good
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Problem fixed: Low 2-cycle alarm float stuck in tank

The 2-cycle oil sensor is sealed in tank, went bad had to replace tank. Crowley had the correct parts, all went well. Now the rest of the maintenance on the 1997 Mercury 115 outboard. I’m sure I’ll be using Crowley again.

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MERCURY 50 HP

Repair Difficulty
Easy
Repair Time
30 to 60 mins
GREAT SELLER FAST SHIPPING
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Problem fixed: REPLACED WATER PUMP

TOOK FOOTING OFF BOTTOM OF MOTOR AND DID REPAIRS

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Repair Difficulty
Easy
Repair Time
Less than 30 mins
First time buyer, and I was treated as though I had been with them for years. Great customer service.
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Problem fixed: Faulty oil sensor.

Easy 1. Removed oil reservoir. 2. Drain the oil. 3. Unplugged sensor. 4. Removed retaining screws. 5. Removed and installed sensor. Reversed procedures.

75 merc

Ok
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Mercury 90

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Fast, fair, as advertised.
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Problem fixed: Bad oil tank level sensor

Watched Utube video!

2005 Mercury 50 hp 3 cyl 2 stroke

Repair Difficulty
Easy
Repair Time
1 to 2 hours
Good. The shipped item wasn't quite what was described on the site, but they took my call promptly, handled it courteously, and made it right. I would shop there again.
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Problem fixed: Alarm comes on when key on or started, even cold.

Impeller was new and pumping just fine. Block was still cold and block sensor checked OK. Unplugged oil tank sensor and alarm didn't come on. Bingo. Ordered new oil tank and low-oil sensor. Had to unbolt the two black modules above the oil pump to disconnect the oil sensor harness. Siphoned and drained oil and removed old tank, Installed new sensor before installing the new tank. Reconnect everything and fill with oil. Problem fixed.

Mercury 90

Repair Difficulty
Easy
Repair Time
Less than 30 mins
It was great! Had the parts I needed for my boat. They got to my house quickly!
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Problem fixed: Continuous sound- oil low

Changed both the tank and sensor. This repair only took 15 minutes. Super simple!

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great, was very happy with there service. Unfortunately I ordered the wrong part. My bad thanks
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1992 Mercury 90 hp

excellent
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I received my parts in a timely manner and in excellent condition
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Mercury 75 hp

Repair Difficulty
Easy
Repair Time
30 to 60 mins
Good, fair prices, correct parts and quick shipping.
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Problem fixed: alarm wouldn't turn off

Replaced the oil level sensor (the cause of the alarm) and oil reservoir because the nipple where the oil hose attaches was cracked and leaking oil.

Mercury 125HP EXLPTO Saltwater

Repair Difficulty
Easy
Repair Time
30 to 60 mins
Excellent customer service and technical help. Lowest price found on parts and parts are excellent quality. Far surpasses Amazon parts acquired.
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Problem fixed: Constant alarm tone

Contacted company and troubleshooted to determine the cause. Turned out to be a faulty float in the 2 cycle oil tank. Replaced the tank and sender unit. Problem solved.

Mercury 115 2 stroke

Got my parts on time at a great price.
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Mercury 115 ELPTO

Repair Difficulty
Medium
Repair Time
1 to 2 hours
Fast shipping with updates on delivery date.
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Problem fixed: Low oil alarm wouldn’t shut off

Low oil alarm for the oil injection system came on even though the tank was 3/4 full. The sensor has an external probe with a magnetic float built into the tank. The internal float went bad so the only fix was to replace the injection tank. This is a 1995 motor so this part is getting very hard to find but Crowley Marine had what I needed. Thanks Crowley!

Had a mixup with order but it got fixed quickly. Love the schematics and part photos.
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90 hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Right product. Fast ship
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Problem fixed: Oil alarm sounded continuously. Well was full

Float valve bad in oil tank. Replaced sensor too

Very fast delivery
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2003 Mercury 50hp 2 stroke

Repair Difficulty
Easy
Repair Time
30 to 60 mins
It's always a pleasure buying items for my pontoon from Crowley Marine. They always have what I need. This will be my "go to" for all my marine needs.
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Problem fixed: Bad switch assembly (oil level sensor)

Had continuous alarm when engine is running. Looked at the maintenance manual for troubleshooting and followed the instructions that lead me to oil sensor. Removed oil Reservoir and empty oil into a container. Ordered the new sensor and when it arrived, I went to grab the oil container and noticed something funny inside. The freaking magnet that tells the sensor the oil level broke off. So I had to order a new oil tank too. Glad that Crowley Marine had it too. You might think that it was the oil tank, but remember that I troubleshoot it and it was no good per manual instructions. So bottom line I had a bad sensor and oil tank. Put it all back together and running good and no alarms.

Easy to navigate. I will buy again
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Mercury

Repair Difficulty
Easy
Repair Time
Less than 30 mins
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Problem fixed: Leak

Oil leak

Very happy, quick service, kept me informed till the product arrived. Thank you for the great service.
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Repair Difficulty
Easy
Repair Time
Less than 30 mins
Super fast shipping and the parts were easy to find online and in stock
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Problem fixed: Low oil alarm incorrectly sounding off

Changed a faulty oil sending unit after alarm went off for low oil, while the oil reservoir was full

Mercury 90 hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Had the parts I needed and the shipping was fast. Got my boat back on the water. A++++
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Problem fixed: Oil tank leaking

Oil tank was leaking replaced it with no problem 30 minutes or less also replaced oil tank hose.

Mercury 90

Right part first time say to follow parts look up and order fast arrival time. No complaints only compliments!
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Mercury 2 Stoke 90 hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Correct parts with fast processing. Excellent!
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Problem fixed: Oil alarm was on steady- falty oil tank float

Remove vowel, undo two bolts on top front of oil take, including a third one by the centre of the bottom side. Then pulled the oil tank out enough to remove the plastic oil tube, Including the sensor - 1 screw. You need to take a pin off the centre of an outer& inner grommet and install on the new tank. The 3rd bolt goes through the it. I then installed the new sensor, put on a zip strap around the oil tube connection and the just fasten it back into place with the 3 bolts... A Very easy job Best m

mercury 115ps

Repair Difficulty
Easy
Repair Time
More than 4 hours
I think shipping is reasonable and it feels very familiar and easy to buy.
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Problem fixed: The oil leaks and the trim drops

It is quite old, so it is necessary to replace the motor wiring, but the same kind can not be found in Japan? I am in trouble if I can not find it yet.

First time boat owner. Found the pictures of the outboard parts very helpful. Was able to diagnose correct part numbers and order what i needed. Delivery to australia was 1-2 weeks but all parts arrived together, not individually, very impressed.
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fine
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good would buy from them again
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Mercury

Great inventory,fast shipping
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Excellent!
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Un excellent service et une bonne communication avec un bon délai de livrason
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1997 mercury 75hp

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Overall experience was very good, easy site to use. Putting in engine serial number is very helpful to get the correct parts.
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Problem fixed: Low oil alarm

Low oil alarm was going off but there was plenty of oil in the tank. First bought an oil sensor but that did not fix it. Did more research and found out it was the oil tank. Ordered and installed new tank and problem solved!

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Good.
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Easy to use site and service was great. Product showed up nicely packaged and was exactly what I ordered.
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Mercury 115

Very punctual and I received an email shortly after purchasing the part. Then followed by a email with the tracking number.
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Mercury 50

Great customer service, received item before expected.
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A+ fast shiping
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90 hp mercury

Arrived in the mail several days later. Part exactly as described. I will use them again.
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1996 Mariner Magnum 40 HP

Repair Difficulty
Easy
Repair Time
30 to 60 mins
by

Problem fixed: alarm sounded constantly

Locate needed part from Crowley schematics. Necessary to remove oil reservoir to replace sensor.

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Great service. Order placed, got notification of order received, of order shipped. Parts shipped and received within a very short period of time.
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Very good service.
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Mariner 115

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Excellent service. Fast shipping. Thanks
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Repair Difficulty
Easy
Repair Time
Less than 30 mins
Excellent
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Good
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2005 Mercury 115 Two Stroke

Repair Difficulty
Easy
Repair Time
1 to 2 hours
Easy to obtain and read engine schematic indicating correct part numbers and quantities required. Hassle free ordering and tracked delivery. Easy payment options are also provided for.
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Problem fixed: Oil leak from two stroke oil container and faulty two stroke low oil sensor/alarm

Removed the engine cover and identified the leak which was coming from the fixing screw position right on the original plastic die cast seam. Referred to correct schematic and ordered replacement parts. Removed lower covers to gain access to mounting points. Dismounted old oil tank and easily removed the mounting bushings and dip stick, rubber grommet etc. Fitted new parts to tank then installed before connecting clamps etc. All in all saved 50% of quoted price here in South Australia for an easy repair - all I needed to do was patiently wait for a week or so for the parts. Thanks Crowley Marine another job well done.

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Repair Difficulty
Medium
Repair Time
1 to 2 hours
Quick shipping.
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Problem fixed: Warning buzzer on continuously.

Oil tank replaced.

1997 Mercury Tracker 60

Repair Difficulty
Medium
Repair Time
30 to 60 mins
Parts came quickly, were as advertised
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Problem fixed: oil level alarm on

Removed the oil holding tank, replaced the sensor in the bottom. This didn't fix my problem, but it was the first thing to check. The problem was the oil sensor on the block.

Mariner 75HP1998

Repair Difficulty
Easy
Repair Time
Less than 30 mins
Great exoerience, parts ship quickly, emailed invoice and include a copy in the box.
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Problem fixed: Low oil warning alert

Replaced the oil redo or assembly due to a sticking oil level float.

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Arrived as scheduled.
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Mercury 115 HP

Repair Difficulty
Medium
Repair Time
30 to 60 mins
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Problem fixed: Oil tank alarm switch failed

Remove lower right hand cowling to access bolts to remove oil tank. Remove tank mounting bolts to get to bottom of tank. Remove old switch and install new one. Reverse steps to reassemble.

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Mercury 90 3 cylinder

Repair Difficulty
Medium
Repair Time
30 to 60 mins
Ordered a new oil reservoir/tank for my Mercury outboard. Store answered my questions prior to my order so that I was sure to order the correct part for my engine. OUTSTANDING customer service and parts were exactly as described. Great savings!!!
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Problem fixed: Low oil alarm / bad float

Replaced oil reservoir/tank because float and magnet separated and low alarm was constantly chirping. Repair was fairly simple, just a little messy. Hardest part was draining the oil from my existing tank without making puddles on the concrete.

Excellent business model, transaction was easy, fast and when I had a problem with my post office, you were just a key stroke away. Your my number one go to online company for my outboard needs. Thanks
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I'm just a boat owner, not a technician, and find the detail in the exploded parts diagrams unequaled. It ensures you order the right part every time. I had a question on one repair and the reply was very helpful and prompt. Delivery has been on or before time on both occasions I have used Crowley Marine. I would not hesitate to recommend them.
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Crowley marine is top notch. They have what I need at a good price and their shipping is extremely fast. I am very happy with everything.
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Mercury 90hp

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Supersession Chain

Name SKU Superceding SKU
Switch Assembly VIEWING THIS PRODUCT 12886A6 CURRENT
Switch Assembly 12886A5 12886A6
Oil Tank Switch Assembly 12886A3 12886A5
Oil Tank Switch Assembly 12886A2 12886A5
Due to manufacturer policy OEM Mercury products can only be shipped to addresses within the United States.