Mariner Outboard Forum
This is the best Mariner Outboard Forum on the internet, it's yours! If you own a Mariner Outboard. Are you looking for good advice about your Mariner outboard engine problems and issues. All you need to know about your outboard engine issues and good advice from your fellow boaters.
From outboard engine and electrical and electronics systems to engine and alarm issues, tilt and trim issues, this is the place to find information. Many are looking for solutions to Mariner boat motor problems and finding a Mariner outboard forum is not easy.
Mariner Outboard Forum
So where do you start? There is a lot to know. I get asked regularly about what is the problem, and more importantly and how to fix a problem. I am a boat owner and that’s why I have published a dozen books to tell you all that you need to know about how to take care of your boats and systems.
My name is JOHN C PAYNE, and many of you may already have one of my books on marine electrical and electronics systems (The recently published Marine Electrical and Electronics Bible now in it’s 4th Edition) or perhaps one of the many other books on sailboats and yacht systems.
The Mariner Outboard Forum for Answers to Questions
I am not an armchair expert, but a qualified and practising marine electrician and engineer and a marine surveyor. I do this for a living. Let this website help you with the boat forum! Thousands of people input with answers to problems.
What is your outboard problem? If you know what the problem is then you are halfway towards finding the right solution. Why not choose from one of my many books to help you fix your problems. Here are some hot topics for the boat-forum:
Battery Charging How to keep the power on and solve battery charging problems
Starting Issues - why wont it start?
Trim Tabs - and issues with same
This is just a fraction of the 3000 plus questions that were posted, and it is hoped that this NEW Mariner Outboard forum and bulletin board does the same.
The Forum is also a great place to look for spare parts that are hard to find, share your problems and experience with others, ask questions, share stories and more about my books and related topics and a lot more. Create your own web page every time you submit an article and include great low resolution images as well.
How to Post Questions to this Mariner Outboard Forum
Forum Editors Forum Rules! Yes there are a few basics when posting!
1. DON'T TYPE IN ALL CAPITALS as it will not be posted. Don't use any HTML code as it will be deleted, that means inserting code like <BR> and so on. Try and insert a link and it will not be posted and you will be banned, sorry!
2. Don't use bad language or profanity as it will not be posted.
3. To post to the Mariner Outboard Forum please at least use a first name and location with your email address in the notification page, so you will get a message when someone leaves a comment.
4. You need to insert a couple of sentences describing you problem and add an image if possible as it helps others. If you insert just a couple of words using SMS messaging short form abbreviated language the system will reject it.
5. Don't Spam the site with multiple submissions.
6. We receive dozens of posts a day and it is quite impossible to reply to more than just a few given this is a free site and I don't have enough time given I have a day job.
7. It helps if you start the headline with your Mariner outboard engine make/model number or boat make/model number. Save the problem description to the text, more detail means better answers.
Do You Have Mariner Outboard Engine Problems?
Do you have Mariner engine problems? Share it on the Mariner Outboard Forum! Whether you are looking advice on an outboard motor or a difficult marine electrical or electronics technical problem then post your story or message here! UPLOAD AN IMAGE OF YOUR PROBLEM EQUIPMENT! Give us a detailed description, short 5 word posts are not much use and will not be posted. Put your boat info, outboard make and model or basic detail in the post title. Look here at fishing and boats for more useful information on outboard boat motors.
Have a Mariner outboard problem to share?
Mariner outboard engine problems and issues? need someone to try and help resolve them? Then use this forum and maybe someone can help.
What Other Visitors Have Said
Click below to see contributions from other visitors to this page...
1988 40 hp Mariner 
Using a muffler, the motor fires right up and idles well. Placing it in gear and giving it gas, causes it to bog down and die.
Mariner 75 hp, 1987
just bought the boat. the seller told me that he had the carbs overhauled. the motor is very hard to start, idles very fast, and backfires. supposedly …
0g405717
Will run rough but stay running if i keep hitting choke when it starts to die.
1989 mariner 3 stroke
DC voltage climbs up to 19.6 DC volts after running for less than 10 minutes..new starting battery installed..is this a rectifier fail?
87 Mariner 2 cylinder/2 stroke Long Shaft
Powerhead runs great and shifts nicely into neutral and reverse but when shifted into forward motor just revs and propeller does not engage. No grinding, …
1982 mariner 50 hp
Recently replaced the water pump assembly (housing and all) on my outboard and changed the leg oil. Took it out for a day and noticed emulsified oil on …
1985 mariner 40hp
Starting the mariner often there is gas over flowing and dripping out of the cowl into the water. After while it stops and the motor runs fine. Its getting …
Mariner 40EL 1982
Engine surges and misses at all rpms. I have replaced the coils, CDI pack, charge coil, trigger coil, plugs, fuel pump and rebuilt carbs. Compression …
Mariner 30hp pull start dont know model or year
Has no info tag serial tag. See yahama emblems on block and bracket. Trying to figure out what year and model. It is a pull start. Have pictures attached …
Mariner 3.5hp 4 stroke 2008 Not rated yet
The glass in the oil sight guage has broken so losing oil. Was just wondering if any one can advise how easy this is to replace ?
Mariner 100hp elpto 1992 2 stroke Not rated yet
I was out on the water I was sitting on 4000rpm when it lost power had a grinding sound so I backed off the throttle. Noticed oil running out of the cowl …
Mariner 115 2 stroke 4 stroke 29 years old Not rated yet
My buddies boat & motor. But he's not computer savvy. So he asked me to see if I can find out anything online.
The motor starts & runs fine on 2 cylinders. …
mariner 4 2 stroke serial number 09744829 Not rated yet
Hi there I recently bought a mariner 4 for my sib, I believe it's a 4hp its not running the greatest so I've been looking for service parts etc but have …
Mariner 60efi, 7E60413V7, IC116824 Not rated yet
My temperature sensor has broken right on the nut leaving the sensor with nothing to grip to un screw it, worried about the sensor dropping in the chamber, …
86 40e Not rated yet
Not charging, have replaced rectifier and do have + voltage and ground at rectifier
Mariner 20hp standard shaft, pull start, Year: 2013 Not rated yet
Bought the engine new, condition is still like new with no more than 25 hours use since new. Engine starts & runs perfect from cold & allows very slow …
mariner 40 elpt 2017 Not rated yet
Just purchased a river cruiser with this engine and I would like advice on this problem: It starts ok but when it warms up the IAC valve opens and the …
mariner 40 elpt 2017 Not rated yet
Just purchased a river cruiser with this engine and I would like advice on this problem: It starts ok but when it warms up the IAC valve opens and the …
Mariner 40 L - 6E9 - L - 30711 - 1982 / 1983 Not rated yet
At the moment i have a normal joystick control, a small one for throtle when i start the engine and a big one that does the dual shift and throtle.
…
Mariner 60 HO outboard engine 2097/2008 Not rated yet
Fuel is coming out of the bottom of the engine , when I press the baffles on the fuel line
Mariner 15hp 2 stroke 2002 Not rated yet
To start, it has to have throttle as it’s pulled. Then it runs really roughly and virtually conks out when the throttle is released.
Two boat mechanics …
Mariner 40HP 4 Stroke 03 Not rated yet
How can I determine the exact model so I can get a manual the numbers I can see are S.N.OP287193. 40LPTO 2004
Mariner 15 hp 2 stroke year unknown Not rated yet
I'm pretty sure my model is a yamaha mariner by the yamaha logo cast in the block it's an older model as it has points ignition I cant find a serial plate …
1992 mariner 150hp magnum 3 Not rated yet
after using motor and it sits for a few hours carbs and oil line fill with oil changed check valve in engine block same problem exists drain carbs flush …
1995 Mariner 225 Offshore Not rated yet
No specific problem. I'm looking at a boat that has the 1995 225 Offshore motor. Are there any model-specific issues to be aware of? Are parts generally …
Mariner 4hp 1986 Not rated yet
pivot shaft is very stiff to move suspect top bushing needs lubricated bottom bushing has a grease nipple but top bushing does not how do i lubricate top …
0p075650 Not rated yet
Hi there, I've just purchased a mariner 40hp 2stroke but has no tag on the side of the transom bracket. The number on the badge stamped onto the side of …
1985 mariner 75hp Not rated yet
Changed out the controller box with new controller and now I have nothing as far as power . Was working before. Changed controller because of ignition …
Mariner 90 6cyl 1983 ser 5919089 Not rated yet
Carb issue... replaced valve seat with a kit.
Started engine and gas pouring out of what looks like a vent screw by the economizer tube/hose. Can’t …
Mariner. 1979. 70 hp Not rated yet
Starts up fine but will only go up to 5 mph. Then bog down and stop running. I put in a new twistconnection to motor, a new squeeze bulb because the one …
1989 mariner 40hp Not rated yet
The button to raise up my outboard is not working. Can I raise it up manually? How would I do it because the motor is all the way down so I can't take …
mariner 60 HP circa 2010 engine no to follow Not rated yet
I have a shetland 459 about 18ft long with my Mariner at low revs
she is a bit dificult to keep steady in a straight line. i also want to know if I risk …
Mariner 2stroke 60hp Not rated yet
Anybody knows what this rubber pipe is for?
Mariner, 115, 1990 Not rated yet
throttle and gearshift won't engage, pin inside the quicksilver throttle and gearshift is loose. Is the pin supposed to have a bushing. Need advice on …
Mariner 15XL 1998 Not rated yet
Problem is related to overheat. May have picked up a bag or something at high speed. Motor still runs, is pushing water, and is getting oil to the fuel, …
Mariner 50hp ELPT 1999 Four stroke serial no; 0G810429 Not rated yet
Warning tone /alarm and reduced revs once I get boat on plane .
Turn engine off , start up , no alarm but even at low revs alarm goes off after a very …
mariner 6e9 20hp Not rated yet
I have been looking for a replacement bottom casting complete unit for a long leg engine. I am finding it difficult to obtain as it is a 1984 and no longer …
Mercury Mariner 1991 Not rated yet
When I unscrew the manual release screw on the power trim it doesn’t go down.....I have air in the system and I am having a heck of a time to put it politely....cannot …
mariner 30... bought used cranks over will not start.!! Not rated yet
old mariner 30... will not start...5 yrs no use.. battery cranks over... fuel new.. gas hose connects to oil bay... mixes with quicksilver 2 stroke oil..hose …
Mercury, Command Thrust 2016 Not rated yet
When I start the engine it goes into high idle and keeps climbing and will not come out of high idle. If I cut the engine and start it back up enough times …
Mariner F20 ELPT EFI 2020. Not rated yet
This engine was brand new, ran well for a few weeks then tragically got an overnight dunking in the sea when the boat it was on sank. Stripped it right …
mariner 1988 40 hp Not rated yet
I can't get the transome lock to release to tilt the lower unit up for transport . Pushing down all the way or up on the black plastic handle makes no …
2017 Mercury 90hp 4 stroke Not rated yet
Went to take my boat out of the water after the season and had a hard time getting it in to gear, reverse was fine but forward sounded like gears spinning, …
Mariner 115, 1995 Not rated yet
i can't get fuel line routed from fuel pump to top carburator inlet because of the poor amount of space available.
it's hard to believe it was there before …
Mariner 90hp two stroke 90elpto 2002 Not rated yet
Only getting three quarters of revs under load not sure if it’s the prop it’s quicksilver 48 16990 a40 20p I don’t have a rev counter should I try a smaller …
Mariner 30hp oil injected 689s 251702 Not rated yet
Hi 30hp oilinjected model trying to get couler code for conecting to early quicksilver remotes plugs havd been cut of engine side and remote side would …
mariner,JF50412DD 1995 Not rated yet
I need help . I bought this 16 ft Amumcraft jon boat wiith a 50 horse that dosent run . The person was supposed to have rebuilt it and couldnt get it …
Mercury, model 800 direct charge, 1972 Not rated yet
Replaced fuel tank, fuel lines, installed fuel pump diaphragm and check valves,an electric fuel pump, went through 2 sets of caburators cleaning and trying, …
Mercury, model 800 direct charge, 1972 Not rated yet
Replaced fuel tank, fuel lines, installed fuel pump diaphragm and check valves, went through 2 sets of caburators cleaning and trying managed to get started …
1982 115 hp inline model 6036122 Not rated yet
replaced lower end. when puting lower end back on engine. turn shifting rod to counter clock wise until hear click to find neutral, controller in neutral. …
Mariner 135hp 1996 Not rated yet
Just got this motor and having a hard time starting. I turn the key, push key in for choke(?) and try starting giving some gas with throttle. It will turn …
Mariner 90hp 1987 Not rated yet
Engine starts and runs fine but once turned off won't restart and trim won't work since 20amp fuse under cowling is blown. Have not been able to find …
Mariner, 115 HP, 1992 Not rated yet
Engine idles well, when warm, has to be manually idled up when cold. Then won't flatten out above 2,000 RPM, occasionally momentarily stalls and comes …
Mariner 25 hp: 25M Ser. No. 695 312 427 Not rated yet
Is this really a Yamaha motor? It is stamped "Made in Japan" I want to find a water pump repair kit and lower unit seal kit. Some suppliers tell me that …
93 mariner magnum 40hp Not rated yet
It wont shift into forward until about half throttle, and when it does shift into forward it grinds like crazy.so is this a linkage problem since its half …
2002 Mariner Optimax 225 Not rated yet
Engine run fine, but from one day to another, when I turn the key on, no warning beep, fuel pump are not priming. After approx 20 sec. a warning horn begin. …
Mercury 60hpELPTEFI 2006 Not rated yet
No power at WOT won't rev over 2500rpm. problem started when I broke skeg and damaged prop. Replaced lower unit and prop with OEM parts. Have also replaced …
Mariner 40hp 1994 Not rated yet
My 40hp Mariner has a leaking power trim ram. Can I rebuild this myself?.I’ve seen seal kits on eBay for a good price., The insulation on the pump wires …
Mariner 40hp 4 cylinder 1996 2 stroke Not rated yet
Runs fine up to 1/3 throttle then when applying from a 1/3 throttle to full the engine misfires terribly. Just goes bahh, bahh, bahh. and wont accelerate. …
30hp 2 stroke mariner Motor dying at full throttle Not rated yet
I was running my 30hp 2stroke mariner outboard the other day and I was full throttle and the motor just died. No warning sign of any kind. Got the motor …
115hp Mariner just wont go!! Not rated yet
Have a 1995 Skeeter fish and ski with a 115hp Mariner. Sat for 2 years after I sold it to a neighbor. He put a new choke/Idle cable on the boat as well …
1988 mariner 115hp Not rated yet
Engine has no power at wot first ten minutes of running wot. Then runs immaculate rest of the day. Can here while running like crap for split second couple …
Mariner 40 outboard idling problem Not rated yet
i have a mariner 40 el late 80s model the motor starts up good after 10 min. or about when it gets warm it shuts off and makes a noise out the prop then …
1997 Mariner 200 Magnum EFI Will not start Not rated yet
My son ask me to help him with his 1997 Mariner 200 EFI Magnum- His battery failed while on the lake so he changed out the battery with another and the …
1992 mariner 150HP Not rated yet
i have a 1992 mariner 150 hp outboard, i don't know alot about boats, im a new owner. heres the story i got about this motor. it had a dead number 4 cyclinder, …
Mariner 75hp Not rated yet
Battery is good but when I try and turn it over it just goes "click". Everything off the battery works fine including the tilt. It just won't turn over. …