How To Repair A Yamaha 50 Hp Prime Start

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Yamaha Prime Outset #2897428
09/05/19 05:45 PM 09/05/19 05:45 PM

OP
Booner

Joined: Feb 2003
Posts: 10,995
Sylacauga, AL

So I got a 2010 50 hp Yamaha 2 stroke that I've had about a month. I don't call back the Prime Start feature on it is working. I can put it into the emergency start way and it will crank correct up, but it's really hard to first it without doing that.

It is supposed to exist activated past pushing in the key switch, merely I can't tell that anything happens when I do that. I've read that I should hear the solenoid click when I push in the key, but I tin't hear it and I got my wife to listen and she doesn't hear anything either. Then before I start taking it apart I thought I would inquire here - is at that place supposed to be an audible click?

I sure wish they could take put a transmission choke on it. Thanks for whatsoever help.

All the labor of man is for his mouth, and yet the appetite is not filled.

Re: Yamaha Prime number Beginning [Re: poorcountrypreacher] #2897685 09/05/19 10:38 PM 09/05/nineteen 10:38 PM
Joined: Apr 2022 Posts: 6,651 North alabama Hevishot13 xiv point
14 bespeak Joined: Apr 2022 Posts: half-dozen,651 Due north alabama	No aural click is supposed to be heard Mr. Steve. Those work by wax balls that rut upwardly inside the prime outset solenoids. I can't recall which wire information technology is that you lot'll need to check ability on, but I'thou thinking it'due south the blue wire. I'll have to cheque the service manual tomorrow. Send me a pm tomorrow earlier 5 pm and remind me. Likewise those are very common for the timing to be off. Lots of folks jack with the potentiometer that controls timing on the side of the Cdi unit. Considering information technology's out in the open, folks can't help themselves from messing with it. viii° + or - i° ATDC is idle timing spec. Idle mixture pre set screws are 1.5 rounds out. If either i of those is out of spec, information technology'll be hard to crank Simply will run similar crap at idle too unremarkably unless you have an oddball engine that needs altered timing or idle mixture which I doubtfulness.

Re: Yamaha Prime number Starting time [Re: poorcountrypreacher] #2897741 09/06/19 06:59 AM 09/06/19 06:59 AM
Joined: Feb 2003 Posts: x,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: Feb 2003 Posts: 10,995 Sylacauga, AL	Cheers Hevishot, I had read conflicting info regarding the click. One time it starts, it runs great for the rest of the day, then that makes me think it'southward the Prime First. And if I spray the smallest possible corporeality of carburetor cleaner into it that will burn down it right up too. Information technology may be something across my skill level. All the labor of man is for his mouth, and yet the appetite is not filled.

Re: Yamaha Prime Start [Re: poorcountrypreacher] #2897832 09/06/nineteen 09:31 AM 09/06/19 09:31 AM
Joined: Apr 2022 Posts: six,651 North alabama Hevishot13 fourteen point
fourteen indicate Joined: April 2022 Posts: 6,651 North alabama	Thanks Hevishot, I had read conflicting info regarding the click. Once information technology starts, it runs great for the rest of the day, so that makes me recollect it'due south the Prime number Start. And if I spray the smallest possible amount of carburetor cleaner into it that volition fire it right up likewise. Information technology may be something across my skill level. Ok, so measure out resistance between the blueish and black wires of the prime kickoff solenoids. At normal room temp, you should read between ii.32-3.48 ohms. Remove the solenoids and connect 12 volt positive to the blue wire on the solenoid, and basis to the black wire while sitting on a work bench. Wait several minutes and bank check to see if the piston height of the solenoid has moved quite a bit. If not, replace the solenoid. If information technology does movement, that means that you don't take 12 volts on the blueish wire when yous printing the fundamental switch in. You'll have to effigy out why.

Re: Yamaha Prime Kickoff [Re: poorcountrypreacher] #2897863 09/06/xix 10:18 AM 09/06/19 10:xviii AM
Joined: Feb 2003 Posts: 10,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: Feb 2003 Posts: x,995 Sylacauga, AL	Thanks for the info, Hevishot. I watched a video of a guy doing most of that, but he noted that Yamaha said that the solenoids hardly ever neglect. I'm thinking the issue is with the central switch and it's not sending whatsoever power. All the labor of man is for his mouth, and still the appetite is not filled.

Re: Yamaha Prime Start [Re: poorcountrypreacher] #2897895 09/06/19 11:05 AM 09/06/19 11:05 AM
Joined: Apr 2022 Posts: 6,651 North alabama Hevishot13 14 point
14 signal Joined: Apr 2022 Posts: vi,651 N alabama	Cheers for the info, Hevishot. I watched a video of a guy doing most of that, but he noted that Yamaha said that the solenoids hardly ever fail. I'chiliad thinking the issue is with the primal switch and it'southward non sending whatsoever power. They don't fail much, only I have seen them fail a few times. Typically the odds of failure is higher if the engine has sat upward for a length of fourth dimension and varnish has congenital up on the solenoids.

Re: Yamaha Prime Showtime [Re: Hevishot13] #2897915 09/06/19 eleven:38 AM 09/06/19 11:38 AM
Joined: Feb 2003 Posts: 10,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: Feb 2003 Posts: 10,995 Sylacauga, AL	Thanks for the info, Hevishot. I watched a video of a guy doing most of that, but he noted that Yamaha said that the solenoids hardly ever fail. I'yard thinking the issue is with the cardinal switch and it's not sending any power. They don't fail much, but I have seen them fail a few times. Typically the odds of failure is higher if the engine has sat up for a length of time and varnish has built up on the solenoids. Thanks again. I measured the resistance at 3.0, but so switched the meter to voltage and got my wife to turn the cardinal to on and and so push button it in. Voltage remained 0.0 throughout that, and I idea that there should be voltage at the solenoid if information technology'due south working. Is that correct? When she cranked information technology the voltage showed two.ii, which didn't make any sense to me, but there is e'er a lot I don't understand on an outboard. Whatever it is, information technology volition be the strangest and virtually unusual thing that has ever happened; that'southward always my luck with a motor. I bought information technology from a used car salesman, and of course information technology fired correct up when he showed information technology to me. He knew I was coming, and I'm certain he had already cranked it earlier I got there. Information technology runs great in one case information technology cranks when common cold, and so information technology's gotta be something in the Prime Get-go. I'grand trying to examination it without removing it. I accept establish that once I have something similar that apart, that'south gonna exist the finish of it. A man has to know his limitations. . I will pull the solenoid out only a concluding resort. From what I've read, at that place should be 12 volts going to information technology when engaged. If I run a jumper wire from the battery + to the bluish positive of the solenoid, leave it there for 15 seconds or so, then crank it, that should mimic the way it's supposed to work and it should crank if the plunger is moving and the rest of the system works. Or is that a bad thought? Last edited by poorcountrypreacher; 09/06/nineteen 12:04 PM. All the labor of human is for his mouth, and yet the appetite is non filled.

Re: Yamaha Prime Start [Re: poorcountrypreacher] #2897939 09/06/nineteen 12:20 PM 09/06/19 12:20 PM
Joined: April 2022 Posts: 6,651 North alabama Hevishot13 14 point
14 point Joined: Apr 2022 Posts: 6,651 North alabama	Aye that will work for testing. I'll bet you a turkey hunt that it'southward either one of 2 things; the asphyxiate engagement wire is either disconnected from the key or its broken, or, the primal switch is bad. Easy to check. If you can't effigy it out, get it to me and i will fix it for y'all.

Re: Yamaha Prime Get-go [Re: Hevishot13] #2898032 09/06/19 01:57 PM 09/06/xix 01:57 PM
Joined: February 2003 Posts: 10,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: Feb 2003 Posts: x,995 Sylacauga, AL	Yes that will work for testing. I'll bet y'all a turkey chase that information technology'south either one of ii things; the asphyxiate appointment wire is either disconnected from the primal or its broken, or, the key switch is bad. Easy to check. If you tin't figure it out, go information technology to me and i will set information technology for you lot. Many cheers for the offer, and I may have you lot upwards on it. I gotta take half the boat apart to go to the primal switch, merely that might be something I can do. If information technology will crank with the jumper wire on I might simply run a couple of wires to the front and put a toggle switch in the control center. I've always thought the push button in key switch was a bad idea. Hey, we can do the turkey hunt either fashion. All the labor of man is for his mouth, and notwithstanding the appetite is not filled.

Re: Yamaha Prime number Showtime [Re: poorcountrypreacher] #2898051 09/06/19 02:20 PM 09/06/nineteen 02:20 PM
Joined: Aug 2003 Posts: 36,946 UR 6 elevation cat Freak of Nature
Freak of Nature Joined: Aug 2003 Posts: 36,946 UR 6	Hope you go it going PCP. All this, test this wire / examination this wire, stuff has me plum dislocated LUCK:::; When presistence, dedication, perspiration and preparation meet up with opportunity!!! - - - - - - - -A government big enough to give you everything you lot want, is big enough to take everything you lot have. Thomas Jeferson - - - - - - - -

Re: Yamaha Prime Start [Re: poorcountrypreacher] #2898072 09/06/19 02:43 PM 09/06/xix 02:43 PM
Joined: Apr 2022 Posts: 6,651 North alabama Hevishot13 fourteen point
14 point Joined: Apr 2022 Posts: 6,651 North alabama	Yes that volition piece of work for testing. I'll bet yous a turkey hunt that information technology'southward either one of two things; the choke engagement wire is either disconnected from the key or its broken, or, the key switch is bad. Easy to bank check. If you can't effigy it out, get information technology to me and i volition fix it for you. Many cheers for the offer, and I may accept you up on it. I gotta take half the boat apart to get to the key switch, but that might be something I can do. If it will creepo with the jumper wire on I might simply run a couple of wires to the forepart and put a toggle switch in the control centre. I've e'er idea the push in key switch was a bad idea. Hey, we can practise the turkey chase either style. Well if need be, permit me know. I can meet you in Guntersville to cut down the distance for you past quite a bit, like about top of the river at one of the gunkhole ramps.

Re: Yamaha Prime number Start [Re: poorcountrypreacher] #2898204 09/06/19 06:38 PM 09/06/xix 06:38 PM
Joined: Dec 2022 Posts: 9,546 Pisgah Al Bigbamaboy 14 point
14 bespeak Joined: Dec 2022 Posts: 9,546 Pisgah Al	I've got the aforementioned motor. Sucker is cold natured, merely once you get information technology warmed up it runs strong. I had an old homo who's a retired marine mechanic melody it upward this summer. It'southward running better right now than information technology ever has. It volition button my 17.v ' boat 32 mph and barely uses any gas. Eli, Eli, lama sabachthani?

Re: Yamaha Prime Showtime [Re: Bigbamaboy] #2898644 09/07/xix eleven:10 AM 09/07/19 11:10 AM
Joined: Feb 2003 Posts: 10,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: Feb 2003 Posts: 10,995 Sylacauga, AL	So I jumped a wire from the battery + to the + of the Prime Start solenoid, giving me 12 volts to the solenoid and mimicking what is supposed to happen when y'all press in the key switch. Unfortunately, information technology didn't creepo. I had hopes that was gonna creepo it. I flipped it to the emergency starting time style and it fired right up. I didn't retrieve I could become the solenoid off without removing the oil reservoir, but I was able to get a long screwdriver to information technology and the screw wasn't even tight. I am not the showtime to try to set up the thing, and a previous owner must have tried and given up. Sure looks like the machine salesman pulled a skillful ane on me past cranking it with starting fluid before I got there. I tested the solenoid with information technology out of the motor and the piston moves the manner it is supposed to practice, and so I guess there is a trouble with the pump or the wax diaphragm within the Prime Start. But since the motor doesn't send any power to it, the cardinal switch must also exist bad. I believe this motor has set up a lot, and that's always bad for one. Hevishot, does the fact that it cranks in emergency beginning manner tell me annihilation about the Prime Outset, or does it merely bypass the whole system when in that way? I'chiliad thinking it just bypasses information technology and at that place is something incorrect inside of it. I've read on other forums of folks simply running it in emergency mode all the time, merely that seems similar a bad idea to me. I can employ information technology by removing the cowling and giving information technology a tiny shot of carburetor cleaner just before putting the boat in the water, simply it will eventually have to be fixed. Thank you once more for the help Last edited by poorcountrypreacher; 09/07/xix xi:17 AM. All the labor of human is for his oral fissure, and all the same the ambition is not filled.

Re: Yamaha Prime Start [Re: Hevishot13] #2899459 09/08/nineteen 02:29 PM 09/08/19 02:29 PM
Joined: Feb 2003 Posts: 10,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: Feb 2003 Posts: 10,995 Sylacauga, AL	So walk me through the process of how it does creepo. Are you pulling the fast idle lever up? I can do better than that, it cranks! Before I put the solenoid back in yesterday, I put as much carburetor cleaner into the Prime Commencement equally I could go. I used a piece of plastic to push button downward the valve that is controlled past the Prime Start solenoid, and kept doing it until it wouldn't hold any more. And so I turned the motor over a few times to attempt to get the cleaner inside the system, and let information technology sit overnight. I but at present walked back out there to test it. I had figured out that the solenoid heats up about 10 degrees when power is applied to it, then I used the laser and the temp was 95, which is the current air temp. Then I turned on the key and held information technology in for thirty seconds. I measured the temp again and it had not changed. That function of it just doesn't piece of work. I tin't see a wire that is off, so it must be an issue within the switch. Then and then I ran the jumper wire from the battery + to the solenoid + and left it at that place for xxx seconds. I checked the temp and it was 104, and I knew that should have caused the piston to movement. Then I cranked it and it fired upwardly instantly! I guess the carburetor cleaner opened it up. So at present I can driblet several hundred on a new switch, or observe a more "thrifty" fashion. I'm thinking I would rather take that blueish wire loose, and then hook a wire to it and run it to the area right abreast the key switch. Then install a button-pull blazon switch that actually looks like an one-time style asphyxiate. When I endeavor to cold crank it, pull the switch out and leave information technology on until the motor is running smoothly, so button it in to disconnect the system. I'm sure this would work, simply my just concern is that if someone forgot to push it back in that might cause the solenoid to eventually overheat. What exercise yous think? If information technology could be unsafe, I at least need some type of switch that would accept to be held downwards to work. Is that switch repairable? It won't be piece of cake to get to it and get information technology out, but I guess I should effort that unless it is sealed up. I can't tell as it is. Last edited by poorcountrypreacher; 09/08/19 02:46 PM. All the labor of human is for his mouth, and yet the appetite is non filled.

Re: Yamaha Prime Beginning [Re: poorcountrypreacher] #2899476 09/08/xix 02:51 PM 09/08/19 02:51 PM
Joined: Apr 2022 Posts: 6,651 Due north alabama Hevishot13 14 signal
14 indicate Joined: April 2022 Posts: six,651 Northward alabama	So walk me through the procedure of how information technology does crank. Are you lot pulling the fast idle lever upwardly? I can do better than that, information technology cranks! Before I put the solenoid dorsum in yesterday, I put as much carburetor cleaner into the Prime Kickoff as I could get. I used a piece of plastic to push down the valve that is controlled by the Prime Start solenoid, and kept doing it until it wouldn't hold any more. Then I turned the motor over a few times to try to get the cleaner inside the system, and let it sit overnight. I just now walked dorsum out in that location to test it. I had figured out that the solenoid heats up almost 10 degrees when power is applied to it, so I used the laser and the temp was 95, which is the current air temp. So I turned on the key and held it in for 30 seconds. I measured the temp again and it had not changed. That part of information technology just doesn't piece of work. I tin can't meet a wire that is off, so it must exist an issue inside the switch. So so I ran the jumper wire from the bombardment + to the solenoid + and left information technology in that location for 30 seconds. I checked the temp and it was 104, and I knew that should accept caused the piston to move. And then I cranked it and information technology fired up instantly! I guess the carburetor cleaner opened information technology up. So now I can drib several hundred on a new switch, or observe a more "thrifty" way. I'm thinking I would rather have that blue wire loose, then claw a wire to information technology and run it to the area right beside the key switch. And then install a button-pull type switch that actually looks like an one-time style choke. When I try to cold crank it, pull the switch out and go out it on until the motor is running smoothly, and so button it in to disconnect the organization. I'm sure this would work, just my only concern is that if someone forgot to button information technology back in that might crusade the solenoid to eventually overheat. What do yous think? If information technology could exist dangerous, I at least need some type of switch that would take to be held downwardly to piece of work. Is that switch repairable? Information technology won't be piece of cake to get to it and get it out, merely I guess I should try that unless it is sealed upwardly. I can't tell equally it is. Is the switch in the command box, or on the nuance?

Re: Yamaha Prime Start [Re: poorcountrypreacher] #2899592 09/08/xix 05:49 PM 09/08/nineteen 05:49 PM
Joined: Feb 2003 Posts: 10,995 Sylacauga, AL poorcountrypreacher OP Booner
OP Booner Joined: February 2003 Posts: 10,995 Sylacauga, AL	Information technology's a stick steering boat; the motor controls are on the right side. I really don't similar where they put it; it's down really low. I tin can accept off the access cover and pull the switch out just a little, but I've probably got to take a lot of the boat apart to get it out and supersede it. That's a job I think I could do, simply I'm not sure which switch I would need. I followed a Yamaha link and the switch it led me to was $259 + shipping. But then I found a generic switch that was simply $fifty. I would only change the switch if the $50 will work. All the labor of homo is for his mouth, and withal the appetite is not filled.

Re: Yamaha Prime Start [Re: poorcountrypreacher] #2899712 09/08/19 08:38 PM 09/08/19 08:38 PM
Joined: Dec 2022 Posts: ix,546 Pisgah Al Bigbamaboy 14 signal
fourteen signal Joined: December 2022 Posts: nine,546 Pisgah Al	PCP, I accept the complete Yamaha control that fits that motor sitting on a boat right now. Tell me what's a fair price and information technology's yours. Terminal edited past Bigbamaboy; 09/08/19 08:38 PM. Eli, Eli, lama sabachthani?

Re: Yamaha Prime Start [Re: Bigbamaboy] #2899746 09/08/xix 09:17 PM 09/08/19 09:17 PM
Joined: Apr 2022 Posts: vi,651 North alabama Hevishot13 fourteen signal
xiv point Joined: Apr 2022 Posts: 6,651 North alabama	PCP, I have the complete Yamaha command that fits that motor sitting on a boat right at present. Tell me what's a fair price and it's yours. At that place ya become Mr Steve ^^^