Stuck Yamaha Engine - Will It Run?

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This generators was stored outside and rusted up pretty bad. The engine is weather seized. This generator I bought as a parts machine and that is all I plan to use it for. Before harvesting the parts from it, I want to make sure the engine is dead. Lets find out.
Used In This Video:
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Ryobi Impact P262: amzn.to/3zL03Vx
Leakdown Tester: amzn.to/3BPcBNy
Borescope: amzn.to/2UNrPSQ
Spark Tester: amzn.to/2TDWdOJ
Compression Tester: amzn.to/371tyGs
Cylinder Hone: amzn.to/2VcWBUP
Right Angle Drill: amzn.to/2V978Ap
Valve Grinding Compound: amzn.to/3f3L4OK
Spring Compressor: amzn.to/3iTxRJB
Puller: amzn.to/3fm1LFt
Generator Model: PM0105000
Engine Model: Yamaha MZ360 Clone Made by Sumec Machinery & Electric, Family Name: 7SUMS.3572GA EM
Manufactured May 2007
I use Harbor Freight Super Heavy Duty Degreaser in my ultrasonic cleaner www.harborfreight.com/1-gallo...
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#GeneratorRepair #SmallEngineRepair #SmallEngine #DIY #Fixed #Troubleshooting #HowTo
0:00 Intro
0:53 Triage
10:45 Repair
26:31 Test
43:25 Teardown
56:19 Conclusion

Опубликовано:

25 июл 2024

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Комментарии : 423

@doublewide6 3 года назад

nice, job on this one. At the price of these Chinese units they truly are not worth rebuilding especially when the parts are so expensive. Does HF make a motor that will bolt on for $100?

@jcondon1 3 года назад

Unfortunately HF does not sell tapered shaft engines. Otherwise I would be their best customer. I heard the price went up on the $99 212. Currently selling for $140

@josephroberts6027 3 года назад

🤣🤣🤣🤣 Tapered SHADY engines! LMAO I know it was a typo, But it does fit! Sorry man, I had to!

@joebrock9784 2 года назад

Little fire was singing coil disconnected it means that something's wrong with the shut off switch for the engine I would just want to kill switch on them over itself and just buy one of those $20 Briggs & Stratton so carburetors in it right up in it

@joebrock9784 2 года назад

It's one of those things run it till I die and poured it out after

@joebrock9784 2 года назад

@@jcondon1 I can't believe it man you just fix it and use it yourself you ain't got much in it

@davidfoulk3078 3 года назад

Your honesty in repairing generators is commendable a lot of people would’ve just got it running and sold it for 4or 5 hundreds bucks and called it good

@browsedeweb8834 3 года назад

I agree. This is one of my favorite RU-vid channels. Excellent editing, very clear description of what he's doing, honest, ethical, pragmatic, excellent troubleshooting skills, fiscally conscious decisions. I could watch one of these videos a day and still not get bored. Andrew Camarata and My Self reliance are my other favorites.

@trvman1 2 года назад

It's interesting to see what was done but the reality is 90% or more of the people who watch this aren't going to tackle this kind of project. You just have to know what you are doing or it's going to be a "fail". I like to tinker, can find these types of generators on line for sale and pick them up for 25 to 50 bucks. But still not going to try and repair them, we all know our limits :)

@garrydonnelly6433 2 года назад

@@browsedeweb8834 Me too. Cheers

@bertgrau3934 Год назад

Maybe you could use the engine for a go cart, over ride the governor and see how long it lasts. I know a dumb idea, but not being able to get parts to rebuild, I would try it.

@bertgrau3934 10 месяцев назад

@@melonbobful You know that MIGHT be possible. The piston would have to be only a few thousands bigger than the stock piston, except the piston pin would need to be in the same position as the original. I would say yes, it could be done, as for the piston rings just get a set of rings for the piston you're going to use the file fit to fit the cylinder. It could be done, but it would take a good machine shop to measure, and machine the piston to work. The cylinder would probably need to be honed as well . The problem is, while it COULD be done, the cost could be more expensive than it would be worth. Just my opinion. Just thinking, you could possibly even use a good used piston, and rings. The first thing would be measure the cylinder, if it needs to be honed, or bored , figure out what it would take to make the cylinder round. Then try to find a piston that might work, measure it if it's very close. Maybe bore the cylinder to fit the piston (the best idea) or machine the piston to fit the cylinder, which ever might be easiest. That's really not a bad idea.

@markphillips6154 3 года назад

I am completely and still amazed at how James finds all of these generators. They must be generator crazy where he lives

@tombeauchamp806 3 года назад

For real. Must have some horrible electric infrastructure

@lordjaashin 3 года назад

@@tombeauchamp806 you must be from inner city or something cause lots of area in rural USA get affected by blackouts or brownouts because of hurricanes, rainstorms, hailstorms, etc. so yes generators are essential part of life.

@tombeauchamp806 3 года назад

@@lordjaashin nah. Live in TN. Understand the struggle. We usually only lose power when drunk people wipe out the poles every few weeks lol

@MrMultitool 13 дней назад

@@tombeauchamp806 I'M with you on that .The few times I've ever seen a generator in use was on a mobile food stand or maybe on a work site.

@GH-wt7ww 3 года назад

Broken fin more than likely from someone wedging a screw driver to un-seize the piston. Nice work.

@markae0 3 года назад

I was surprised the loss of the fin did not upset the balance when it was spinning/making power at 120V 60 Hz under load.

@geraegorin219 Год назад

Hello James. Im from Sydney Australia. I just wanted to say what a absolutly Great job you do in your videos. You point out the problems and outline possible issues to look out for. Im in construction, and I have no experience with motors but your videos gave me the push I needed to take on a project. I hire generators for a day or 2 sometimes at about $100 a pop.Watching your videos I bought a stuck generator for $79. It took me a week of after work dabbling but i managed to get it fully functioning its only a 3KVA but it meets my needs for now. Thank you very much. I look forward to your next video. Regards Gera

@jcondon1 Год назад

Cannot go wrong for $79. Glad to hear you got it running again.

@tonym6920 3 года назад

It’s a shame people don’t take better care of their equipment. The problem with gensets is that we don’t use them very often so we tend to forget about the maintenance part of ownership. Then when we do need them….NOT, lol. Thanks for the vid..👍👍

@JohnDoe-es5xh 3 года назад

Too much money and / or too lazy. Always buying new stuff isn't good for the environment.

@t_4178 3 года назад

some people cant turn a screw

@tarstarkusz 3 года назад

Never store anything outdoors under a tarp. It's better to store them uncovered outdoors than outside under a tarp. Or even under an overhang. it is the tarp that killed this thing. It traps moisture and that's all they really do.

@JohnDoe-es5xh 3 года назад

@@tarstarkusz Right, some people getting water from a canvas, spreaded in the desert at night.

@brianjohnston9822 3 года назад

I agree, I originally in a parts store, and the common statement that I get is “I haven’t run my machine in a couple of years and I can’t get started”. The now want me to give them 20 minute lesson on how to restore the motor. Most of them are yuppies with no tools.

@thomasburke7850 3 года назад

Me Condon has by far the best teaching videos on RU-vid. I look forward to them every week

@raymondsmith4808 3 года назад

Not only is Mr. Condon a physician/surgeon, he is a magician being able to get this engine to run and produce power.

@dougs6460 2 года назад

I am amazed that you got it to run at all. Thanks for taking us along.

@JetIgniter2k2 2 года назад

Thanks for doing the leak down test. It was nice to see what percentage you get with bad cylinder walls and yet an engine that seemed to run fine.

@ericvaughn1126 3 года назад

Excellent work as always and SHOCKING how well that thing ran based on the leak down stats at the end. You likely satisfied everyone's curiosity by honing the cylinder too. Clearly too much damage to get it right again. Perpetually learning new things from you and very much appreciate your time, effort and commitment to excellence. Keep em coming JC!

@jcondon1 3 года назад

Thanks Eric

@MRrwmac 3 года назад

Can’t say you didn’t try hard to save this one! Thanks for taking it all the way down because I definitely was interested. You’re right, that was one well made engine! Pity the carb and sleeve were so bad.

@trickyrat483 3 года назад

For sale: gas generator; one owner; kept in lake. :)

@keithaustin2917 3 года назад

In the beginning all it was was just a leaky valve what a shame it could have been put right so easy

@joeromanak8797 3 года назад

Ran when parked.

@kustomair5937 2 года назад

🤣

@waynebrundidge206 2 года назад

Loved the video. I have been turning a wrench for over 60 years. I love to learn more. Thanks.

@edwardkane3237 3 года назад

Love my Ryobi tools. I have a collection of them. So happy to see Ryobi raising the bar with their HP tools. Their HP tools go head to head with anything out there at an affordable price.

@wernerfritsch6436 3 года назад

Honest man, good work, good explanation and good pronunciation for non-native English speakers.

@craigdreisbach5956 3 года назад

Great video James. If you were going to save the engine, I would break off the crank vane 180 degrees from the broken one. This will keep it in balance. Welding the broken one is difficult, but I have done it successfully by pre- heating both parts with oxy/acetylene torch and then doing the actual welding with a Mig welder. Kind Regards. Craig

@butler386 3 года назад

Wow great job of getting this engine to run. Your skills are unmatched I believe. Thanks for the video.

@thomasramsay4286 3 года назад

I use a 50/50 mixture of acetone and automatic transmission fluid to loosen stuck pistons. The smaller acetone molecules help wick the transmission fluid into the stuck parts loosening them up. it's cheap too.

@jesterr7133 2 года назад

Sometimes it's tough watching perfectly good machines being left outside to rot like this one was. A generator is the last machine that I would leave out in the weather. I hate seeing good machines destroyed through pure neglect.

@effenfish661 3 года назад

finding out when to call it quits saves on time, money, and heartache. thanks for sharing your process for when to throw in the towel.

@mjg263 3 года назад

Pretty sure that entire thing has been under water at some point. It did run quite well though and I was very surprised to see ball bearings in there, super nice build. I’d be half tempted to put it back together and put it through its paces just to see if it could keep up.

@scroungasworkshop4663 Год назад

James, you have so much patience, I’d have binned that engine long ago. Well done mate. Cheers Stuart 🇦🇺

@bmx1cruiser 3 года назад

I've learned so much from watching your videos. I only with I had half the skill (and patience) that you have.

@ed6837 3 года назад

Good learning experience!!! Nice video. Amazing how an engine can be abused and still run. You are a true mechanic. Nice job!!

@jeren65 3 года назад

I really have to praise your courage Also like your explanations of your procedure during work and very happy that you do not have music for the video

@brianwood5220 2 года назад

Sad to see it go, but you did give it your best shot!

@lot27a 3 года назад

I agree. That was a beefy looking unit. Too bad it's owner neglected to take care of it. I knew you were going to get it started though...lol. Informative as always James!

@TheChargeShow 3 года назад

Another brilliant video James :) Enjoyed watching it.

@davidcurnutt9584 3 года назад

Another awesome video with plenty of real world diagnostics. Thank you.

@watermanone7567 3 года назад

Good work, what a shame people abuse those generators so badly. I had one very similar, got it running and the customer decided to use it anyway after I repaired it the best that could be done. Probably will see it back in worse condition. Thanks for great video's.

@leandrolaporta2196 3 года назад

Amazing the way you took the rotor out with water I have never seen that before, brillant

@mmcc310 3 года назад

Great job, so glad to watch tear down!

@beachthor1 10 месяцев назад

that water hydraulic trick was awesome!

@ronaldclark2624 2 года назад

Cost prohibitive but in a pinch could work as is. Thanks for trying. Love to see restoration of things broke and returned to service! Ron

@rayshutsa6690 3 года назад

I have been enjoying watching repair the generators have been learning what it takes. 🇨🇦

@mtcruse 3 года назад

Can't save them all! (Phrase commonly used amongst little British car enthusiasts)

@midixiewrecked7011 3 года назад

28:00 Mustie1 would be so proud. Lol

@rlvtrader 2 года назад

I left my Homelite 5000 generator outside under the covered part of the the deck for a year. When I went to start it last year it was seized like this generator. So I left it in my garage for another year till I got a chance to look at it. I put WD-40 in the spark plug hole and waited 1 day but it would not budge. So I put in a ton more WD-40, tilted the engine like you did and bam it unseized the next day. So next I checked the carburetor and I saw that it looked like this one :( So I'm afraid water got in my engine. I don't know if it's worth it to proceed, but I'm learning a lot from you. Thank you so much for posting this video.

@rlvtrader 2 года назад

Out of curiosity I wanted to see if the cylinder was pitted. I put the piston down to the bottom stroke and put in a camera probe to see if I could get a glimpse. Unfortunately there was tons of rust. The weird part is that the rust was at the top half of the cylinder with none at the bottom half. This sealed it for me. I'll clean up the carburetor and see if it starts, but either way I'm just going to sell it cheap to someone for parts.

@r8118830 3 года назад

Thank you James that was very good. I learn new tricks every time.

@johneverley6097 3 года назад

Very informative, enjoyed watching with my morning coffee, thanks, more please!

@grahameida7163 3 года назад

I never thought I would see James defeated, but it was fun !

@simonmorris3964 3 года назад

He got a seized engine running way above any expectations.

@YukonHawk1 3 года назад

@@simonmorris3964 Exactly 👍👍

@JR-bj3uf 6 месяцев назад

I am an old time motorcycle mechanic. Every spring we would get two or three locked up bikes. (Triumphs mostly) It's not that they sat outside but usually they were stored in a garage with an unvented dryer and the cylinder, with the open intake valve, would rust. We would first loosen the valves until they closed.We made a tool to screw down into the spark plug hole and with it we could put air pressure on top of the piston. We would squirt WD40 down the bore and put 120PSI air pressure on it. Did the trick.

@francisbailey3831 3 года назад

Hi James, at least you gave it a good old college try. Great video.

@mysomervda 3 года назад

Using water to pop the generator shaft was worth the price of admission. Nice teardown.

@jcondon1 3 года назад

Thanks

@kerrygleeson4409 3 года назад

Another great video thanks for sharing James 🦘🇦🇺👍

@Subgunman 3 года назад

Great video! At least you did not make the viewers sit through removal of all nuts and bolts and those few were high speed shots. One tool I wish I had was an ultrasonic parts cleaner, great for carbs. One trick I use is to flush the lower end with diesel when there is water present and let it dry out completely. Even use compressed air to help dry it out. Its good to fill the crank case with high quality oil and flush it out and refill with fresh oil. When you flush out with clean oil its good to turn it all angles to get that oil to the bearings.

@diywithreza 3 года назад

I never clicked so fast on a video before!

@19mati67 3 года назад

When laping the valve, you could use a piece of hose on the stem, and add a piece or round stock at the other end of the hose. You can grab that round stock in the drill. Make sure that the fit between them, are fairly tight. I have used the power head removal, with the water and it worked great. Thank you for the tip.

@charliebongiorno8120 2 года назад

Great lecture

@esunayg 2 года назад

insane patience :) i would have dumped this in a sec. great knowledge and workmanship. Love your videos keep doin.

@jr7003 2 года назад

I have learned so much by your videos! Thanks!

@itsallfabrication 3 года назад

Thanks for the vid James.

@RustyNail5856 2 года назад

Very nice tear down video. and you got some nice parts.

@jcondon1 2 года назад

Just used a few yesterday to save another.

@MitchEllis-dn9lf Месяц назад

James, you’ve been watching Mustie1 lap valves in. LOL

@zombieprinting2670 3 года назад

Yup, That water line says this thing was sitting in a flooded basement or something. Too bad. Great video as always :)

@philipbreau1246 2 года назад

Surprised how well it ran with 80% leak. Good find for 20 bucks.

@hectorarroyo2285 3 года назад

Amazing!!! Excelent job. I learn much!!! Thanks my friend!!!🤗

@chuylee1842 2 года назад

Best video ever!!!!! I was late for work watching this. Totally worth it!!!

@jcondon1 2 года назад

Thanks

@GlennsSpeedShop 2 года назад

Thanks for honing it out, I really wanted to see how it would or would not clean up.

@walterbeaver6365 2 года назад

Great inspiration video. Quality teaching video. Very impressed with instruction. Thankyou Sir.

@joeromanak8797 3 года назад

Well she did run and she was right on spec as far as the generating end. Not the best unit but if the lights were out and this was all you had …. Good video, I learned a bit about generators but that water trick to get it off the taper was something I hadn’t see before. I’ll add that one to my bag of tricks. Thanks. 😎👍👀

@williamhealey6862 5 месяцев назад

Great video. Lots of stuff in it. Using water as a hydro mechanical force. Great idea. Never thought of that

@AZVIDS 3 года назад

Another interesting and well done video👍👍👍👍

@martin4787 3 года назад

Hi James, it's the Land Rover mechanic from England. I was wondering when you'd start lapping in the valves with the drill lol. You could change the cylinder liner by warming the block in Mrs Condon's oven, or making a dolly and pulling it out if you've got a liner that measures up out of another block James. Now that would make an interesting video James.

@jonathanfenne4948 3 года назад

Cast in liner that mate. Can't be removed.

@martin4787 3 года назад

@@jonathanfenne4948 Hi Jonathan. Are you saying that there's a lip at the bottom of the aluminium casting that stops the liner slipping down into the block, because I've replaced many dry liners in aluminium blocks without any problems. All i did was to bore them out and press the replacement liner in with metal loctite. I grant you that it probably isn't cost effective, but would still make an interesting video.

@jonathanfenne4948 3 года назад

Pretty sure it's a cast in liner. The liner is placed in the die, and the aluminium poured or injected in around it. Then the casing is machined.

@mattyb7736 3 года назад

@@jonathanfenne4948 yep, I concur, melted many down for scrap, liners got ridges on it where its cast into the finned section, non removable unless you bore it out and press another liner in and dowel it

@martin4787 3 года назад

@@jonathanfenne4948 Hi Jonathan. The block is cast first and then the liner is placed into the block before final machining.

@rustyrepairs2565 3 года назад

Good video. Thanks for sharing.

@walters5235 3 года назад

Great Vid as always.

@roylejohnson5632 3 года назад

Very good information. Thank you

@joeortiz3455 2 года назад

Well thats a neat job use the drill to lap, thank you professor this is an awesome lesson!

@DrMGomezJr 2 года назад

Another great job...

@gwinters6847 2 года назад

Hone bore, replace ring with +. 0025" on bore, -.0015" groove, main journal bearing surfaces should have held up, scotch Brite and double check clearance. In my former engine days, I dremmeled an oil groove on the rod bore, nothing fancy but increases oil in the area. I found early model motor cycle engine parts were exact drop in !

@MrKidi39 3 года назад

Loved the vid as always! A same about the engine!

@andrewgrace4410 8 месяцев назад

Thanks James 😊

@timd1833 2 года назад

I approve of your use of gloves thruout this resurrection.

@jeremymcauliff2510 3 года назад

It should be criminal to abuse something so badly. Take care of your tools and they will take care of you when the time comes. Keep your stuff indoors and run the engine every few months. Swap the fuel every 6 months and keep it full of Ethanol free fuel, or at least E10 fuel with Stabilizer.

@jcadult101 3 года назад

Wow, that was a blast!

@deangentles4966 3 года назад

Hi James great being in your class today A good tip about lapping in the valves with a drill and to get the gene started with one pull Poor thing wanted to live but for 20 bucks you got some good parts for your bin mate

@ambread1 3 года назад

Funny when you where tryna keep it going with easy start🤣good job though for perseverance and you got your reward 👍.

@lawrencepevitts2434 3 года назад

Neat trick using the drill on the valves. Excellent video as always. You can only do with what parts are available & affordable. You gave it a good try. Now you have more parts in your inventory & 2 more valve spring retainers.

@davyarthurs 3 года назад

Yeah spotted his new method!

@johnobiro5202 2 года назад

That’s the best way to lap valves. I’ve always done it like that and never had a problem, ever on bigger engines. It’s only a genny, not the Mars Rover.

@larrykelly2838 3 года назад

Good call Doc

@somerandomguy3868 3 года назад

I certainly understand your decision to retire this power plant, I might suggest trying to cross reference the seals, inspect the piston and rings but in the end it's your call and that's good enough for me

@neil6212 Год назад

Replacement parts cost pretty well suggests that it was never intended to be repaired. A Chinese clone of a Honda, Yamaha, or other engine in the 13HP range would carry an OEM price of $80-100. The Chinese heads with brush rotor design "should" cost well under $100. The company I retired from after many years, tested a wide range of engines, generator heads, and pressure washer pumps, both the real thing and others, for which I worked out and built the load test equipment, built to the design concept of one of our engineers. We stuck with Honda GX series, Briggs Vanguard, and Subaru. In the lower price area, almost all of them were Briggs L head, then later I/C. We used heads from Italy, as they were found to be the best in our sizes, then later made ours in house. Your site reminds me of the many "adventures" we experienced! When the Chinesium units started pouring in, it pretty well ruined the portable generator business. Retailers could sell them for less than the cost to produce a good one.

@tonythediyer8537 3 года назад

As solid as that build is, would be worth trying a very fine cleanup cut in bore. Too bad it was not cleaned after the flood... Nice video, as always.

@brentsmith5647 2 года назад

Brilliant video thank u

@donnaber4918 3 года назад

Love it!! That is just how I used to lap my VW valves.

@royhill5284 3 года назад

You are very knowledgeable Thank you

@Farm_fab 3 года назад

Yesterday there were two matching generators some contractor had scrapped. Unfortunately, both were missing the same parts, so no chance of getting either running. I believe both were Honda clones. Maybe next time I'll get something good. I did find a couple goodies there, but not as nice as another scrap yard the previous day. I found a Snap on bearing puller tool. It's the one that goes under the bearing, and slides together with bolts.

@Farm_fab 3 года назад

@mister kluge this is so true, and it shows how wasteful we really are. I have some very nice name brand hand and power tools as a result.

@MrRobert1603 2 года назад

you could see the top piston ring was stuck !! still good ! thanks

@martynbuzzing3327 2 года назад

Win some, lose some. Merry Christmas from Scotland

@jcondon1 2 года назад

Merry Christmas

@hddm3 3 года назад

Great vid thanks

@kpdvw 3 года назад

When the Rocker cover is made of Cast and not stamped sheet metal you have a superiour product! When James buys a "Parts machine" it usually turns out better in the end than a regular fixer upper...!

@kpdvw 3 года назад

Or you got to know when to walk away.....

@marcelloroos766 3 года назад

Those camshaftrods just hang in there, is puzzling me

@stirlingfromla 3 года назад

That cast iron Finn has a very CLEAN and RECENT gray break line. Perhaps we're not being told the whole story here. Right James?

@johnclarke6647 3 года назад

Hope it is not as hot up in PA as it is here in SC. It was 95 degrees a few minutes ago with 60% RH. You know how hot that is. The gas in my ms 460 puked all out after a 15 minute run. I have gone through Gatorade like some do water. Stay cool and stay inside.

@fredbm01 3 года назад

In the beginning of the video you told us the engine was totally gone, and it runs like crazy, some thing stinks here!

@comeasyouare4545 3 года назад

I don't believe this damage was done from just sitting outside. It looks like a flood generator.

@jonminer9891 3 года назад

I thought that also. Thanks for sharing! Stay Healthy!

@jcondon1 3 года назад

It must have been flooded. Do not see how this would happen otherwise.

@comeasyouare4545 3 года назад

@@jcondon1 I still think it was worth the money. The tank, and engine aren't worth saving, but the rest of it is savable. I had a generator that sat outside for twenty years. Had to rebuild the carb because it was all gummed up, but it ran fine afterwards. The only way that much water could have gotten into that generator is if someone left the tank cap off, and the fuel valve on, and the float was stuck open. It was apparent from the pictures that the tank had at one time had a lot of water in it, and the cylinder looked as it had been completely full of water. This could only lead to the conclusion that it had been submerged for a period of time, and the water not being removed. If it was fresh water, and the water had been removed soon enough, this generator would have been savable. But that aside another great video.

@mikeg3529 3 года назад

I do what James does down here in Florida, and I gotta agree. Ive seen some real scams out here with generators. Me personally, if I get generator thats locked up, its for parts or scrap. I dont even bother trying to unstick them because 9 times out of 10 at best it becomes a smoke machine that also makes some electricity lol.

@jonathanfenne4948 3 года назад

Suspect water was entering the fuel tank, draining into the carb, float bowl stuck so it flooded into the cylinder through the intake valve. Or it's a flood victim, like you say.

@shopsteward6292 3 года назад

Love the hydro trick...

@denisnoble9140 3 года назад

Great job well done 👍 👍👍👍

@steveferguson3705 3 года назад

that's an awesome way for grinding the valve l'll have to try it

@patricknichols7399 3 года назад

Ouch, looks like a fresh break on the flywheel. Was that from trying to break the engine loose. Sometimes doing that is so irresistible it gets the best of us. 😊