Free Broken Scooter, Can We Fix It?
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- Опубликовано: 9 апр 2022
- a viewer sent me a note about some machines he was getting rid of. and this was one of them, he picked it up none running and sat in his basement for a long time, this Benelli Andretti version m50 scooter only has 500 miles on it when it quit running. lets see what we find while trying to fix it.
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Fixing a broken motor is one thing, fixing what the last guy did, that takes real skill.
Umm, nahh, gas , spark check piston , then you have all sorted out , and check the carb . Most 15 year olds in europe knows this and can fix it without any problems.
Yep, nothing is worse than when a guy bring in his machine and a box of parts he'd removed after watching a couple of RUclips videos. Unlless you happen to know that year, model and make really well, you're in for a heck of an afternoon if he's lost a spring, bracket, or gasket or two along the way.
@@DN-me8mt I'd rather think any 15 y.o. would swap two color wires thinking he knows it all and it takes a smart mechanic to figure it out.
@@DN-me8mt im 15 & i dont know my pud from my ace
@@DN-me8mt that still doesnt fix the issue of "what the previous guy did" Which is a huge problem EVERY single time
The grin on your face Mustie when it fired up and ran properly for the first time was priceless. Like a kid in a candy store. Never grows old. You keep it real.
His laugh at the success gets me laughing, too!
I came here to say this. Nothing as much fun as watching Mustie win!
He had the biggest smile on his face!
When Mustie laughs, we all smile!
@@williamgraham8809 I love it that he laughs when he probably wants to swear.😁
dude this is the most comprehensive repair of a scooter i’ve seen! you really help a novice like me to understand what you’re doing and looking for. thanks a lot ❤
I feel decently confident in my repair skills and I must say I'm impressed. I would also have started with the carburetor but after that I'd be heading straight to a compression/piston ring scenario (based on the smoke) and after that a valve adjustment. I learnt alot during this video.
9:45 everyone and their dog knows what a 2 stroke is but the fact that you explained it anyways; subcribed
Darren’s laugh of success = PRICELESS 😆
Haha, yes!
We had to wait till 1:08:33 but we got it ! 🤣🤣
I was literally going to comment and read exactly what I was going to say👍…yes sir
Mustie's real name is Darren?
Just realized I’ve been watching you for about 6 years if not more I’m now 19 was about 14 or 15 when I first found your channel I WOULD LIKE TO THANK YOU I NEVER HAD ANYBODY TO HELP ME LEARN ALL THIS STUFF AND YOU HELPED ME A LOT WITH YOUR VIDEOS I AM NOW A SERTIFIED MACHANIC IN MICHIGAN
A SERTIFIED MACHANIC? Or a certified mechanic?
@@manolisgledsodakis873 Both sound the same to me. He is a mechanic not an English teacher.
Good for you! I am just a hobbyist, but have learned and used a lot from Mustie1 too.
not a certified speller
Good for you! That's awesome!
When it fired, i could smell the 2-stroke oil! A memory of 50-odd years ago.
Damn dude! That was an amazing effort and success! Great job! Always astounded at your skill and dedication to not being bested by other folks cast offs. Thank you for the great entertainment!
Good morning MUSTIE and all the MUSTIE followers !
GOOD MORNING!
Hi Jason ! 😊
Mustie, you have done it again. Best show on RUclips. Cheers mate.
I sought your videos out by a recommendation from the bug club. Thank you for doing these. Your knowledge is impressive and an ability to share what you know and how you work through a problem.
I saw you at the dust off Sunday but didn't get the chance to say hi. Great seeing your single cab.
Love this.. Im not a very Mechanically inclined guy however i just picked up a china 150 so I figured id start watching some videos like this just to learn a little bit.. whats what, kind of learn my way around a small engine and such.. I have learned a lot from just this one video and would just like to say that I really appreciate the time you take to do this because you have been VERY thorough and as you are working your telling us exactly WHAT your doing..exactly WHY your doing it AND explaining the sort of troubleshooting that specific thing is and what we would want to look for both on the good and bad end of the spectrum. You know your way around an engine and I am here to learn! Thanks Teach!
I'm hoping to find something like this on the side of the road that just needs a little air on a tire. Man can dream can't he.....😊
You'll have to move somewhere rich people live? I love watching these videos, but the real magic is what people are actually throwing away. Anywhere else it would be on Ebay?
im hopin to find a old mechanical type writer
man can dream ye?
I live 65 miles north of Alpharetta/Dunwoody. Those yuppies throw out so many impulse toys or sell them for 1/4 price with almost no use.
You buy used up here in Hooterville, the stuff is used to death. Everything used is like buying from Mr Haney.
where I live you can't get anything for free (even a broken things have price same as working one) 🙄
i found my 3rd wife like that
Part of the joy of these videos is the joy on your face when it works. Brilliant!
I love watching your videos, how you explain things and actually show your wins and fails. I have learned so much from you, even though my Biking days and fixing cars are well over, Just watching you fixing up stuff is very theraputic. + you get some great freebies- so you win, and we your audince win!
Love your determination and detective work. Great job!👍🏻
man, that takes me back. you're the first person to call channel lock pliers, water pump pliers that i've heard since my grampa died in '05. he always called them that, and he had just about every size of them there was, from tiny ones that might have been 1/2" fully open, to a pair that had handles that were over 2' long, and would grip a 3" pipe with ease. he even had a pair that had "parrot beak" jaws that were specifically for gripping pipes. i still have most of them, my cousin got the rest. you know, benelli sounds italian, but i'll bet the closest this thing ever got to italy was the pizza joint that i'm sure the previous owner rode past, since every town has at least one pizza joint somewhere. the benelli company i'm familiar with makes really good shotguns. scooters, not so much. well, no matter what, the price was right. it's hard to find fault with a deal where the machine was free.
In my area, kids on those *deliver* the pizzas !
Same company that makes guns
@@marcryvon must be nice. where i live, the only thing that gets delivered is the mail.
@@georgebamber6871 imagine that. with the way this runs, they should prolly stick to making guns, those work. this...well, the last guy threw it away. i think that kinda says it all, doesn't it.
Benelli was a reputable Italian motorcycle manufacturer but i think thr name brand was purchased by china, just as AJS ( British bike manufacturer) was so often all that remains is the name not the original quality.
1:08:44 It's moments like this that we work on cars/bikes/engines. That is one happy man right there. I've said it before but I'll say it again. Your patience and problem solving process when faced with an unusual issue is admirable.
Yes sir ! Love it
What great patience you have sir!
Always a pleasure to watch you work though the equipment issues explaining your thoughts along the way. Thanks again,nice job!🤔👍🤗🙏🇺🇲
It was obvious that he had thoughts of not figuring this one out. I was probably almost as thrilled as he was when found the rev issue!! Also... I actually get motivated every week to get shit done because Mustie1 pushes through and doesn't make excuses. Well, at least none that we see :)
There's no way he wouldn't have figured it out, eventually. A scooter is way too simple of a machine for his knowledge, he would've taken it apart bit by bit until he found what's wrong.
around 40:00 when it starts it's a misfire situation and to me it sounds electric and that would push me into a rev limiter issue or electronics. Some mopeds do have a rev limiter.
By the way I did experience a similar behavior on a moped I once had with breaker points - the axle the point arm rotated on was corroded and made the arm move too slow. Decent idle, no rev and when revving it did sound the same.
I was sure it was the auto-choke. Go figure - somebody switched the wires. Great job, great video. You are THE G.O.A.T. of engines.
When it's no start, it's always some stupid screw-up by the previous owner... or the engine blew up by being abused.
I literally just came from work and the supervisors were working on a no signal from the motor. I was thinking, I guarantee it's a bad wire. Two hours later we opened up the plate to find the motherboard had a cable mashed up by their shop. Two bad pins on a flex cable.
@@firesurfer They will start fine without choke.
@@ProctoLogic so ?
@@ProctoLogic Wrong
@@lordracula2461 Choke is always on until it gets power.
Great work mate, awesome how you went through everything and realised the wiring issue
Just found your channel and LOVE that it is a long video covering the entire fix and diagnosis. This is a SUCCESSFUL fix for sure. It didn't run and could be used now by someone.
I know this scooter!
In Italy was called Benelli 49x
It had two versions, first one like this offroad and an onroad with road tyres.
Super rare, I think prodution stopped in 2011 according to some italian bike sites.
There are some for sale in Italy if you want
I remember it because I liked it when I was in highschool
Not uncommon a repair turns out to be a correction of previous repair attempts.
Well done 🙂
I just love your laughing when you finally make it run I'm sitting here laughing along with it. I've been watching you for a long time some of your videos are on so long and yet you always learn something new thanks a bunch there musty
Looked like a rerun from a year or so ago. The switched wires and getting stuck in the woods was very familiar to a previous episode. Contents however is always good and never gets old.
Mustie, I have been following and watching you for years. You are an incredible mechanic. You never cease to amaze me. 2 wires on this but damn what a lesson on these little bikes. Thanks for years of great videos
Wow, you got it for free?! That’s one heck of a bargain. As usual, Great job, Mustie1. You ,truly are the best!
Wooow that was awesome. I love your calm, patient analytics approach to the problem. You would make a great teacher!
I would have enough working out the faults on this thing but filming and explaining to this guy is a legend
I had a scooter a few years ago I got brand new as a Christmas present. Super happy and excited but anyway. Down the line of it being serviced by the dealer he took the sides off and put a screw through the main ignition wire so every time it rained the bike tried cut out 😂 took a bit to find the issue. But stumbled across it when checking luckily
I wanted share my story to help others look for things like this. Even from a main dealer as well (from the UK sharing my love to you Mustie)
For anyone interested it is a sinnis shuttle 125CC 4 stroke. Good bike but has issues with throttle cable snapping once a year. Another fun story of a day 8am coming back from work after it iced over and my cable got jammed on full throttle and I had use the kill switch to make it 2-3 miles home 😂
25:01 "Let's poke it with a stick..." Finally, an engineering concept I can relate too 😂
Great video I was on the edge of my seat at 25 minutes when ya couldn't get it but I knew you was gonna try like hell...and then I got excited for you ....always a roller coaster ride with you man
I love these videos it's like therapy for me...I can watch them all day long.
Hey, Mustie, you got the Choke operation backwards. When you put power to the choke coil, it extendes-goes outwards 2-4 mm to close the "extra" fuel hole in the carb. When extended it closes the hole that gives extra fuel. Takes about 2-3 minutes to extend all the way. Measure it with a caliper before (when its cold) and after 3-4 minutes.
It's of the 'melting wax' kind right? Like eg a peugeot 2 stroke
@@gags730- I was beginning to think this moped was a WHACKED motor! ;)
@@gags730 Context is all important. No "whacked" without your "wax"!
That's interesting;never saw an automatic choke on a 2 weeler.....The older yamaha's had a similar system; not a real choke,but a separate circuit in the bowl just for the choke,and was controlled by a cable,that connected to a small plunger with a rubber tip in the carb.
YES! I had a Yamati just like this and I believe the enricher was the issue with mine. The fix I would use when I hadn't run it in a while was to drain the carb bowl, then use the kickstarter to pull/release vacuum to the fuel valve to allow fresh fuel in, and then when it started, lean the scooter down on the left hand side and roll the throttle back and for for a bit. It would sputter for several seconds and then would run fine. If I didn't do that and started riding it right away after starting it, the throttle would bog down and it'd die like it was starving for fuel. But once it was warmed up and running I could stop it and start it up again with no issues. If I let it sit for a week without being run, I'd have to go through the same starting/leaning steps again.
1:08:30 you can't help but laugh and smile when mustie finally gets the throttle issue fixed and it revs up along side him. Man this was a roller coaster video one of your better ones in awhile!
I love seeing your thought processes while diagnosing this. I really want to try to fix up a few motor scooters in the future.
Man, your tinkering skills are on God level! I'm almost inspired to start tinkering on my 200cc Chinese scooter. I've written it once before years back, but it's pretty much been sitting for about a good five six years. Thanks for the great video, they're all inspirations.
Benelli were quality motorcycles from Italy, founded somewhere between 1911-1921. They didn't fare as well over the years as Ducati or MV Agusta, unfortunately. This was one of the scooters produced in China after Benelli was acquired in 2005 by Qianjang or whatever they are called. Have fun finding parts! Thanks for all your videos, been great hanging out in the garage with you.
It's a Yamaha Jog clone engine. Parts are plentiful and tons of aftermarket go fast stuff too. No problem finding parts.
Damn the wonderful look on your face when you fixed the reverse wires, was so awesome, I felt like I was right there with you, so freaking glad for ya, thank you for sharing this with us all.
I was convinced from the start of this video that the ignition timing was at fault. I suppose I was wrong, but it was an ignition fault at least. Great work and well done.
Seeing as it was really low miles, my guess was straight up electrical problem, switched wires is a tough one to find, nice work 🙂👍
Can nothing break this man!?! Love the perseverance, love when the 'fix' is found, love this channel..."all hail Mustie!" 👍
I think we were all pretty perplexed trying to figure this one out. It's usually challenging to go where others have been before! Excellent troubleshooting Mustie1! Take care and thanks for posting!
I was on the phone with tech support once and the guy told me that if someone worked on it before me and it didn't get fixed I should always check his work. When you think about it, it's actually not a bad idea. 🤔
I only just found this channel but I love it. I appreciate you Mustie1. Thank you for sharing your skills knowledge and experience
Kudos on persevering to find the issue.
Yep Nice one Mustie.....Love your fault finding skills and patience.
Ive NEVER had more fun than I did riding a step-through moped through a forest trail. Its got no business being there but 15mph on one of those feels like 100mph on a dirt bike.
That magic "AHAH!" moment makes all the prior work pay off.
I would pay money to a charity to hang out for a day wrenching with Mustie.
Just as an aside... when you had the transmission cover off that CVT and showing how it worked, I noticed only one side (crank side) of the CVT was adjusting. You can tell as the belt axle side didn't contract its diameter as you throttled up.
That would half the top speed of the lil' scoot, giving the impression that the engine isn't revving to full, when it's actually the weights on that CVT, axle side, that are stuck in position.
Hey Mustie,
You sure put this through the ringer & left nothing left to the imagination ! Bravo for your not giving up !
The only true bit of the story about this scooter was that it had only done 500 miles ... Mustie - your combination of small-engine genius and absolute stick-at-it-ness is totally inspiring. These episodes you put together are like visiting with a mate in his workshop for a while for a mix of coffee and carbon monoxide. Intoxicating ... and have been since the beginning in your home garage. Thank you from the UK.
This was a fantastic video. I loved the way you went through it methodically. I never would have got to the crossed wires! Makes me smile because it was only by watching your videos that I became confident enough to work on my sons bikes, and then my mowers and even my cars. I am jealous of the way you so confidently open up carbs and disassemble and reassemble them!
Yea...I always have spare parts when I get done...
Get that carb slide in backwards on an _otherwise good_ machine, and you can be headed for a crash at full throttle. Actually *beyond full throttle!* :/
@@general5104 if it went back together without them, it wasn't required.
No guts no glory.
@@YodaWhat thats how i blew up my mx175. So sad. My fuel valve wouldn't close and the kill switch wasn't working. I was young and didn't know what to do.
Take it easy mate and we will all look forward to when you are fit and well again best wishes
Mark (Worcester) UK
I firstfound you doing the red Karman Gia, and followed most of your projects since. Yourknowledge is amazing, be it new or old junkers. Great job every time sir.
I learn so much watching this channel. Stuff I would never have had access to otherwise. It is extremely interesting to see how many different ways the engine designers come up with for the internal combustion engine.
This is such a coincidence for me! I just bought a Chinese made scooter for $70 and went through this process! The first thing I did was empty half a gallon of water out of the gas tank… lol. I’m fighting the oil injection and a charging issue right now. There’s a vacuum gas shutoff that I had to replace also. Love watching you bring things back to life.
The scooter repair man I go to said he routinely deletes/bypasses the oil injectors and just run with premix so as to eliminate the chance of fatal injector failure. As a rule by the time you realize that the injector has failed its too late.
The good thing is you got what you paid for
I don't know much about those oil injection systems, but I have heard if you do a delete, you can cause them to run too lean. Good luck with the project. sounds like a fun one :)
I have a couple of these 50cc Chinese scooters, but they're 4 stroke.
This was absolutely fascinating. I've watched a number of your videos before and wondered while watching this if you were going to give up. But I've seen enough of your videos to know that you're not a give-up type of guy! So I've wondered... if the original owner watched this video and at some point said to himself, I wonder if maybe I got those wires crossed?? Geez, nobody would have started there... can' you image the trouble you would have saved yourself, not to mention the HOURS!! You've got a great subscriber base, so this sort of long-form video probably is good for you--it certainly had me watching the whole thing!!! Congrats on the fix!
Awesome Video. I learned more about 2 strokes in 90 minutes than I have in 40 years of living. Thank you.
Once again Mustie1 you prove yourself “da man” that no quit attitude is the key, I seriously appreciate the tips and share of knowledge you show and provide. I have applied it in several of my own projects and it has helped a ton! Thank you Mustie1!! More please love it all.
I love watching these difficult ones. The look of joy that comes over Mustie1 is great every time.
One very important lesson i learnt from my engineering days when diagnosing problems is that if the job has been worked on by somebody else to always and I mean always double check their work because most often than not you will find the person before you has done something wrong which is why the thing being worked on is still faulty. Many many times I have come to a job where the person before me has installed something wrong and 98% of the time it relates to wiring.
Very very good video.
This guy is a genius. I didn’t understand a lot of what he was doing but the video was so interesting I had to watch to the end just to see if would solve the problem. He has a lot of patience, i would’ve taken a sledgehammer to that thing.
Mustie is the pure joy of being able to pursue a passion. Not always full of nothing but fun, but the end result is always worth it. His reaction when he solves an issue is gold.
Dr. Mustie 1, does it again....Love this elimination episode...Learn the way to diagnose and you will win more often than none... Great work Dr..
I bet the previous owner added the new magneto with the aftermarket cdi, upon reassembly he got the wires backwards and it never ran right, till you got it and diagnosed it correctly, nice job, I always learn something watching you mechanic!👍🇺🇸
You are so relaxed and never give up that scooter would have been flung into next week if I was trying to get it going well bloody done my man.
Nice edited video. I enjoy the longer videos where you show every step but this one you definitely edited but still has the longer run time. Nice and cleanly done. I thought it was the choke the whole time, with the loss of throttle control.
The bolt on the exhaust is a sheetr-off bolt. Usually used on ignition barrels on cars so when tightened up, the head snapt off and the barrel cannot be removed by thieves, unless they come prepared with a hammer and chisel.
which they did in my case. how do i know? they didn't bring their own car battery..
hi Ian PK . same bolts in UK.also
@@rogerwale4827 I am in UK, Thats how I know what they are. :).
Well done. Your perseverance is admirable.
I watched entire video and very good, you covered so many things and you're correct you never know what somebody else has done. congratulations on getting it to run!
The thin pipe on the exhaust is one of the restrictor's. To derestrict it, you cut the pipe off and weld the exhaust up.The Naraku CDI will be a replacement and a derestricted CDI
Hey bro
@@iancameron198 Hi.
Genious! Absolute spot on! Congratulations bud, you nailed it!
GOOD IT SOUNDS GREAT ONE MORE WIN TO BRAG ABOUT
You can heat the exhaust while it's off and pull the restrictor out as I done it 5 years ago to mine
Awesome video! Please do a follow-up video on this one. I want to see the final repairs and see it run good.
I know next to nothing about bikes but enjoy videos of them. I am pretty sure I had as big a smile as you when you got it to idle and throttle. Whole time I thought it might be something to do with the actual throttle and cable. Will be sure to watch more.
That was a great race! AWESOME, AWESOME JOB! Love watching!
Hi Mustie1, that exhaust is a expansion model, designed to increase counterpressure to the exhaust port. It's what the cool kids want, to make their scooters faster and flashier. Benelli is an Italian motorbike-builder. They used to produce, next tot mopeds, beautiful six-in-line motorbikes.
I longed for a six cylynder Benelli 750 back in the day.
Nothing like finding a problem that has been elusive. Nice fix!
That feeling when you solved it..its priceless 🙃😁Love how you react 😄
Awesome diagnosis video! Sidenote-your voice is awesome for radio or podcasting
This was a good one! Challenging, but you can't stump Mustie1! LETS GO! You had me clapping the moment those RPMs came up and that back tire started spinning 😄 had a huge smile on my face. The sense of accomplishment is such a great feeling. As an Automotive Technician I can relate to that feeling of figuring out a problem that at first has you stumped. Love it! Keep the "will it run" videos coming sir!
It looked to me like the float level was too high, and lowering the float level should have a similar effect as lowering the float needle, which helped, but not enough. The excess oil also seemed awfully persistent to be just in the crankcase, which makes me think the oil pump may be out of adjustment or defectively pumping too much oil.
That is pretty darn cool! I'm surprised that just a crossed wire would do that. Live and learn.
Cliffhanger this was!!
Thanks for the great content, as always.
Loved watching the logical deductions at each stage of this!
Great video. I enjoy watching people figure things out and get her going, especially if it was free. Can’t beat the price.
Great teaching video! And great example of how someone that tries to repair a problem without a strategy can cause more problems that they started with! Excellent work, and congrats! Your smile and laugh of victory made my day!!!!
Brilliant !. Loved that moment it revved up correctly. I had a car with a similar fault, took me eight months to sort it because it was so intermittent. But that moment you find it ………! Glorious…..
Superb Mustie, thanks for not giving up. Great video my friend. Kind regards. Paul.
Your persistence is admirable.
Wow. I was scratching my head over this one. Well done for seeing it through to the win, pretty sure I'd have failed on this one.
hey mustie the expansion chamber before the muffler is part of the intake in a 2 stroke. venturi effect and pressure differentials caused by the expansion chamber increase the exhaust scavenging which in turn controls the intake charge....exhaust leak before the expansion chamber will affect how much exhaust is pulled from the cylinder which in turn affects how much air fuel mix gets drawn into crankcase. i dont know that that is the only issue happening here but it can explain the idle/accelerate issue. thanks for the videos
I bet he knows that already.
@@Hjerte_Verke probably but the little things can get you..murphy had a law i think.
its uh, not a venturi effect, its pressure waves. the pressure puls from the engine reflecting off the back of the chamber and cramming wasted unburnt fuel back into the cylinder before the exhaust port is closed during a certain band of the rpm range. but close enough.
@@EllaBananas whenever you have a restriction followed by an enlarged closed space...you will have a decrease of pressure and an increase of velocity ..excuse me for labeling it a venturi effect while it is almost identical and is irrelevant as i know how it works and you know how it works and mustie knows how it works
Fantastic vid! I love that feeling of success at the end of a long road. 🤘
Another fine job Mustie!! Enjoyed as always
Another outstanding video again
Thank you for the education
Alot of people appreciate your time to help
Once you get this 100% sorted, I'm sure it will sell quick. Very low miles. Thanks for the great video, you start my Sundays right !!
You can still see what’s left of the nubs on the rear tire!
It is always harder to fix something that has been tinkered with. The more hands involved the harder it gets. Nice job, that was a tough one.
WOW, that was on for the books, good find on that wiring.
You’re a very intelligent man and I appreciate the content you make. Keep being you Darren!
You inspire me to dig further in my mechanical explorations. you are a great mechanic and the main reason is that you are curious and persistent...
Thanks for sharing! This is the first video I saw on your channel. I learned something.
Clever Kid!! What a thrill to have you find the problem.