For the life of me I can’t figure out why your video has so many negative ratings. This is one of the best videos on outboard motor repair on KZread! Nicely done!!!

Also, meant to add my complements on your thorough treatment of the subject.

fantastic video! great job and thanks. best video to explain this I have found.

Thanks for the explanation at the end. Very helpful!

Great vid will probably watch it 100 more times till I get mine running.thanks much

@tmbouman

4 жыл бұрын

If you are sure you have an electric problem with a motor this vintage, my advice would be to just replace everything. Otherwise you might replace something and it will work for a bit only to have another component cause the thing you just replaced to fail shortly. I had to put in multiple power packs because I think the stator was killing them.

thanks for sharing - pulled mnie today, strangely my blue to ground was not shorted, but i got a resistance number, red however was ground to black (gnd) and also gave a resistance result - either way my motor seems to be running great start to about 2k rpms, then just no power.. still a bit confused about all the ohms stuff - anyway i removed my flywheel with 2 planks under neath and gave the top nut a good whack (screwed in most of the way) :p After about 10 whacks popped right off -

@tmbouman

7 жыл бұрын

It sounds like your stator to me. The second coil that supposed to engage at higher RPM is not working. The opposite of what happened to me.

Hey thanks, very helpful. Thanks again

This may have been cleared up already but you were saying something about you didn’t quite understand the stators purpose. The stater is a two-part process for one it supplies the ignition. And the other supplies the charging system.

Great info, thanks!

Great video thanks!

Good video good explanation thanks

Thanks for posting the video I'm just about to replace a stator on a black max 150hp so there are some excellent pointers there

Awesome video!

I have a two cyl 30hp Yamaha-built Mariner which ran fine last month, before I went out of town. I disconnected to battery while I was gone. When I attempted to reconnect the battery the other day, the battery cable arced, so I began eliminating wires one by one on the starter solenoid. Determined the one causing the arc was solid red which came from what I think is the rectifier. Don't have a manual yet and haven't been able to find a wiring diagram on line. My question is what would cause a dead short to develop while the motor was sitting still?

@tmbouman

7 жыл бұрын

Well there arent too many things it could be. the rectifier and starter are the two parts that directly connect to the battery. Can you check the connectivity on the rectifier with a digital multimeter?

Them classic fifty's stater burns everything out! I had to replace everything that was hooked up to wires smh but the bitty riding out again!! Lol

Great Explanation....Thanks!!🤠🤠🤠

hey bud. I have no spark on any of my plugs. Im no tech but i try. lol. how do i know for sure it's the stator and not the trigger or powerpack? Thanks in advanced.

@tmbouman

5 жыл бұрын

Hi, try reading this: photos.google.com/share/AF1QipOwaqrFXFjayWnWmLikHvs4I52i5njGM3FwnJ0igDjsUmMC17DDWp352InFkdZdQA?key=VUdwa0N4WFpYYjFDUmRoNFJyMC1weDRXczRpU1FR

I bought a 5$ multimeter at harbor freight. I tested the purple and white and got a reading of 750 resistance, then i tested the brown and black wires and it had around 750 also. What does this mean??

@tmbouman

7 жыл бұрын

It means your trigger is probably fine, but you need to test with a DVA meter too. goo.gl/photos/5v44kA4nmXTFcPnU7

Hey Troy I got A150 mariner magnum EFI went out last night for a few hours she stalled on me turned it over it started again then it stalled and it wouldn't start Next morning I check for spark I got spark on 3 cylinders on one side should I replace the stator

@tmbouman

5 жыл бұрын

I would check your powerpack resistances to see if that is bad first. If that is bad, I would replace both.

Hey Troy, where did you find a stator for your engine. I got a late 80's 40 ELO motor and can't find a stator or powerpak for it anywhere

@tmbouman

6 жыл бұрын

DAY 1 LODO I got it on eBay searching for the part number.

@thatsit7423

5 жыл бұрын

Is it a cheap one from EBay,I got the Problem with my Mercury 50hp from 1992. I think it’s the Cdi but Maybe the Stator 🤷‍♂️ And where do you the Paper for Messure,sorry for my English i‘m from Germany

@thatsit7423

5 жыл бұрын

My Problem is that the Motor wont start,i only have a Spark on second Cylinder. ignition coils Are ok,i change the cabel Come from Cdi

Troy, need help with my 1995 mariner 60hp outboard. Shop stated from there testing need switch box which was installed. Motor will not start with switch box installed. I would like to check the stator myself, however the wiring colors on a new stator does not match the colors that a visual on my motor. Can the stator be check without dissembling? Plus can you help with this testing. Thanks for any help you can give

@tmbouman

6 жыл бұрын

Hi Cathy, if the shop says it was a switch box issue then i'd imagine it is a spark related issue. So check spark plugs, wires, coils. If you have a timing light (or you can use one of those in-line spark checkers) see if there is no spark on all cylinders or just 1. If it is on all cylinders and the switch box is new, then its stator or trigger. Can you find a service manual for your motor?

@cathylegrow8693

6 жыл бұрын

the motor is fuel injection

@tmbouman

6 жыл бұрын

Okay, i am not familiar with those motors. I suggest finding a service manual for your motor.

@cathylegrow8693

6 жыл бұрын

Thanks for the info --what will I look for within the manual that could assist. Will the in-line spark checkers tell me anything?

@tmbouman

6 жыл бұрын

The service manual will have a section on diagnosis a no spark issue. It will give step by step instructions of what to check (and how to check with resistance values). The in-line spark checker will help you understand if it is a single cylinder or multi cylinder spark issue.

did you use the red lock tight on the stator hex bolts.....that stuff is stuff makes it tough to unscrew down the road without adding heat.

@tmbouman

6 жыл бұрын

Manual says to use just a drop. You could also use blue i imagine

@johnethell436

3 жыл бұрын

@@tmbouman where do you find the guides for motors

@tmbouman

3 жыл бұрын

@@johnethell436 maybe ebay? I got it with the boat from my dad

I have a 1986 3 cyl 90 hp merc. We are unable to get the alarm to go off even when cold. How do we locate and remove the temp sensor> It is a solid alarm unable to see where we can disconnect it to test it. We installed a newer ignition and control arm on the boat last year.

@tmbouman

4 жыл бұрын

Hi Joser, I am not familiar with alarm you're talking about. Sorry I can't help more.

Can you attach the link for the forms you were using to read and diagnose the issue?

@tmbouman

4 жыл бұрын

It's in the description of the video

Where do I find the manual or the charts for mercury?

@tmbouman

3 жыл бұрын

What charts?

@tmbouman

3 жыл бұрын

The manual you can probably find on ebay

Great video! I'm getting 6.52k ohm's (6520 ohm's) on my blue/blue white and 153 ohm's on red/red white. It runs good at low rpm, but won't go any higher. Does this mean my high rpm portion of stator is bad?

@tmbouman

4 жыл бұрын

What year? It seems close enough. Probably not stator. Read this:forums.iboats.com/forum/engine-repair-and-maintenance/mercury-mariner-outboards/294039-procedure-to-test-stator-on-mercury How do you know it's a spark issue? Could also be fuel issue. Is it getting enough fuel? Are your carbs clean?

@tmbouman

4 жыл бұрын

When you are trying to go faster, shoot some starter fluid into the carbs. If that makes it go faster, then you have a fuel issue. Not a spark issue.

@adambrymer5856

4 жыл бұрын

@@tmbouman 1987 45 hp. Had no spark until I replaced stator from eBay, which ended up being used. Not sure if I need to send back to seller. I cleaned carbs, so im pretty sure it's a ignition prob. My purple/white on dva is 2.8 while connected then jumps to 7.7 when disconnected. So that should mean my switchbox is bad right?

@tmbouman

4 жыл бұрын

@@adambrymer5856 Try the starter fluid thing to make sure not fuel issue. If it is spark, I think your resistances are fine. When my low speed stator part was bad the circuit was open (infinite resistance). I'd be thinking more power pack is also bad (stators seems to kill power packs and vice versa). Did you see this doc in the vid description: photos.google.com/share/AF1QipOwaqrFXFjayWnWmLikHvs4I52i5njGM3FwnJ0igDjsUmMC17DDWp352InFkdZdQA?key=VUdwa0N4WFpYYjFDUmRoNFJyMC1weDRXczRpU1FR

Do you have the links to the Iboat forum were you got that info. I searched but either missed it or didn't see it. Thanks. Great video by the way.

@tmbouman

7 жыл бұрын

This info? goo.gl/photos/5v44kA4nmXTFcPnU7

@freebird1963

7 жыл бұрын

Thanks. If the discussion on the forum was worth reading be interested in it too. I am having some issues with my 87 70hp Mercury and mechanic I think is trying to bend me over.

@tmbouman

7 жыл бұрын

I think this is what I was referencing: www.iboats.com/basics/diagnose_starting_problems.html

@freebird1963

7 жыл бұрын

Thanks very much.

@amandashaw1243

7 жыл бұрын

Troy Bouman f

excellent!!

hi troy. off topic question but could you tell me where the control cables connect on this motor

@tmbouman

7 жыл бұрын

Hey Dan, Working on this, but havent had time to get a picture for you

@danielwolf3275

7 жыл бұрын

Troy Bouman thats fine! dont go put of your way! i wont be back in town to work on my boat for a week or so anyways

@tmbouman

7 жыл бұрын

This help dan? goo.gl/photos/L4bP2hmFPysy2Y8dA

I have a 84 75HP two stroke mariner starts fine first start up but when I run it a little while kill the engine for 20 mins goto start again and engine will not start ANY SUGGESTIONS I NEED HELP DIAGNOSING???

@tmbouman

4 жыл бұрын

Hi! Engines need 4 things to run: Air, Fuel, Spark, & Compression. Since you engines runs, I will assume compression is fine. So the question is why, after sitting, is it losing access to air, fuel, or spark. What I would do: Try it again and when you try it start if after 20 minutes, shoot some ignition fluid into the carburetor. See if it starts. If that works, then it is a fuel issue (e.g. you have too much oil in your gas mixture). If that does not work, then I would try to see if it is a spark issue. I would go to autozone or the like and buy an inline spark checker to see if you have spark on all cylinders. Hope this help!

Where do you get the charts guide for your engine?

@tmbouman

4 жыл бұрын

Hi, i got it from my dad when I got the boat. I am not sure where he got it. I'll ask him the next time I talk to him.

What cheap multi meter would do well for this test in your opinion? thanks!

I just bought this motor... the guy replaced all the electronics except the stator and just gave up I guess. Anyway, I now know that the low speed side of the stator is bad (open) and needs to be replaced. What I can't figure out is HOW to tell if the magnets are bolted or glued? I have the same flywheel that you have in your video with bolts around the outside. I would assume that is the bolt in magnets but looking for confirmation before I purchase a stator. I have not taken my flywheel off yet as I'm waiting to order the tool with the stator.

@tmbouman

5 жыл бұрын

Hi Nathan, I am not 100% sure but I think they are bolted in.

Hey Troy I got mercury 500 50 hp. It's been sitting for few years but I made it run 4 times before but now can't make it run again. I've done many research and most of them topics about stator. Funny I don't have one. So now I am in the dark. This my first motor, it's an old motor and I am trying to restore it. Any help would be very much appreciated

@tmbouman

7 жыл бұрын

The motor doesn't have a stator? I guess I don't understand your question.

@thebigboss024

7 жыл бұрын

Troy Bouman yea that's right. I don't see stator installed on it. No wires coming from the flywheel.

@tmbouman

7 жыл бұрын

Hmm probably has a distributor then. So the energy for the spark plug would come for the battery through the distributor. I would look for that and see if that is functioning correctly. Not 100% sure though. Probably the best place to start is get a timing light on it to see if there is spark going to the plugs.

@thebigboss024

7 жыл бұрын

Troy Bouman I already check all spark plugs and I got no spark.

@tmbouman

7 жыл бұрын

I would track the wires from the plug back to the next unit. I imagine it's a coil then to a distributor. Check and see if that is good. Do you have the motor connected to a good battery?

Everything on mine has power but the green ones going to my coils. Im thinking the power pack bad what are your thoughts?

@tmbouman

8 жыл бұрын

+Benson “Red69Bu11” Worley Thanks for the comment. Do you not have spark on all cylinders? Did it happen suddenly? In the beginning of this video i walk through how to confirm a bad power pack. Do you have a DVA meter to check through that?

@tmbouman

8 жыл бұрын

+Troy Bouman Here is the video on how to make your own DVA meter if needed: kzread.info/dash/bejne/nKmc1MuYftu3k7Q.html

@Red69Bu11

8 жыл бұрын

+Troy Bouman yes it happened suddenly no spark on anything thanks that video I'll check into it really soon hopefully remember to keep you updated

@tmbouman

8 жыл бұрын

+Benson “Red69Bu11” Worley Sounds good. I would bet it's the power pack if it happened suddenly to all cylinders, but it would be good to confirm it is not the stator. You can get power pack on ebay for about $100 if i remember right.

@Red69Bu11

8 жыл бұрын

+Troy Bouman I saw them for that price too

time on the wires over the years the wires get crowded, turn to dust, in between check points, if you see one of many wires ,is bad replace the harness if not the device it self

i have a 35 hp chrysler getting no fire have checked switch cdi trigger stater have checked ever thing all checkes good stil no fire can any one help

@tmbouman

6 жыл бұрын

jerry woodall how do you know you’re not getting spark? I mean how do you know spark is the problem?

I’m having problems with my 82 Mercury blue stripe 50 hp 4cyl. Guy I bought it from had new trigger put on it and he put new switch box on it. Has fire on all 4 cylinders when cranking idles perfect. As soon as you increase the rpms it quits firing on 2 and 4 and only hits occasionally on 3, number 1 fires perfect. Move the throttle lever back to idle and all are firing again. Tested the trigger and from what I can tell it tests out like it’s supposed to. Any suggestions?

@tmbouman

6 жыл бұрын

Could be the stator. If prior owner replaced power pack (switch box) the old pack could have killed the stator. I'd confirm its a spark issue (inlne spark tool) too. Just to make sure it's not a fuel issue at higher speeds. If it is spark issue. I would run through this checklist to confirm which component is bad: photos.google.com/share/AF1QipOwaqrFXFjayWnWmLikHvs4I52i5njGM3FwnJ0igDjsUmMC17DDWp352InFkdZdQA?key=VUdwa0N4WFpYYjFDUmRoNFJyMC1weDRXczRpU1FR then replace that. Hope that helps!

@jordanchandler3996

6 жыл бұрын

It’s is a spark issue we have went through the carbs as the previous owner has also and replaced floats and all gaskets and diaphragms. with a spark tester open all the way strong spark on all 4. While engine is running we put timing light on each plug wire and found that number 1 fires all the time even with the coils swapped from the other cylinders that quit firing when engine rpms are increased. I think I’ve pretty much tracked it down to the stator based off all the testing I have done. And from all the info I’ve got off this video. Really appreciate all the help and good info you had. Hoping I can get a used stator from a local guy that has tons of used parts before I fork out the money for a new one jus to be sure.

@tmbouman

6 жыл бұрын

Hi Jordan seems likely. See the link I sent before. If you switch the stator leads on the switch box and the cylinder that always fires changes from 4 to 3. Then it confirms stator (point #2 on the top of the link). Glad I could help!

@jordanchandler3996

6 жыл бұрын

Yes I saw that gonna try that this afternoon when I get off of work. I printed off that page so I’m gonna double check all the stuff on that page. Appreciate all the help!

@jordanchandler3996

6 жыл бұрын

Power pack was the problem. Bought a new Sierra marine runs like a champ.

I have the exact motor. It cranks and idles great. But when I'm on plane it's making a real fast missing sound. You can feel it surging. It's fast like brrttt. Brrrttttt hard to explain. Any ideas what it could be. I've paid a mechanic over 1000 bucks. And it's still not rite. He said he replaced power pack. Rebuilt carbs. Put a water jacket gasket replaced plugs. I'm lost at what to do. Thanks.

@tmbouman

3 жыл бұрын

Hi Scott. I had the same issue. Seem very likely to be your stator is bad. The stator has two power generation circuits, a low speed and high speed. It is likely your high speed circuit is bad. Unfortunately, bad stators can also kill powerpacks. So start watching this video at 2:15. You can do the resistance measurements to confirm if you stator is bad. I think the high speed circuit is red/red-white.

Where exactly did you find that info on all the electrical read outs?

@tmbouman

8 жыл бұрын

It's a printout from a mercury troubleshooting manual. Here is a picture of the page: goo.gl/photos/5v44kA4nmXTFcPnU7 Does that work for you?

@thatsit7423

5 жыл бұрын

Troy Bouman is it Compitapel with Mercury 50hp 3 cylinder 1992?

@sammyreyes63

3 жыл бұрын

@@tmbouman I'm wondering too about the troubleshooting manual. I'd like to find one for my Mariner 100. Where did you find it? Having similar issues with mine. Just replaced stator, trigger, voltage regulator/rectifier. Waiting on spark plug wires.

@tmbouman

3 жыл бұрын

@@sammyreyes63 Hi Sam, the printed out paper I am not sure where my dad got it. He gave it to me with the boat. As for the big service manual, you can find those on ebay and the like. So I have a service manual (like what a dealer/repair shop would use) but for my engine.

@sammyreyes63

3 жыл бұрын

@@tmbouman Is it anything like this? www.manualslib.com/manual/951508/Mariner-70.html

what to check if the engine want say anything

I have a 1987 25hp Mariner that is getting spark to one cylinder only, tested the ignition coils and they are good, I don't know how to check the CDi box or the pulser coils can somebody help me. The motor runs but on one cylinder only. Thanks!

@tmbouman

8 жыл бұрын

Start watching at 0:35. It describes how to check and what you want to check.

I have a classic fifty 1986. What kind of stator did you use?

@tmbouman

4 жыл бұрын

Goose Fravah you'll want to search your serial number on the Mercury Marine parts finder to get the exact part number. Then serach that on eBay. www.mercurymarine.com/en/us/parts-and-accessories/parts-catalog

parts are cheap, through iboats.com, and electronicboats.com, cdi.com goggle cdi.com, for cross referance numbers then call iboates, or electronicboats.com

Merc stators are NOTORIOUSLY unreliable. They fail a LOT more often than OMC units. Don't waste your money on OEM Mercury parts - buy the CDI brand aftermarket stator - the quality is much better.

You sound like you know what you're doing and reality I don't think you know what you're doing The mount of talking that you were doing you could a had it running

@tmbouman

5 жыл бұрын

Excellent comment Rodney. For those of you who want to see Rodney's KZread contributions: kzread.info/dash/bejne/h4uqs6uooJyXkdo.html

@ibnfevet1445

5 жыл бұрын

@@tmbouman lol

@sammyreyes63

3 жыл бұрын

@@tmbouman LMAO. Good one.

Too much Um,um,um!! Super annoying!!

@sammyreyes63

3 жыл бұрын

Who cares. Don't think he claims to be a professional video maker. Just sharing very useful ummm.... information.