This Rare Yamaha Motorcycle Hasn’t Run In Over 8 Years. I’m Going To Bring It Back To Life


Back in March 2019 I hitched up a U-Haul motorcycle trailer to one of my Smart Fortwos and drove north into Milwaukee. Deep in the cold Wisconsin city sat an orange 1972 Yamaha U7E. This little two-stroke answer to the Honda Super Cub found its way into my garage with the promise of a restoration project. I never got around to it, but that’s going to change. This motorcycle hasn’t run in over eight years, but I plan to finally ride it before the summer is out.

I got my motorcycle license in the spring of 2018 and wasted no time before collecting all kinds of old Japanese motorcycles. Almost all of them were what motorcyclists call UJM, or “Universal Japanese Motorcycle.” Japanese motorcycles of the 1970s and 1980s not only looked similar between brands, but their spec sheets were remarkably similar, too, hence the “universal.” says the term describes standard-class motorcycles, but it’s really far more expansive. Scooters and even underbone motorcycles had the UJM thing going on, too.

And for proof, look no further than my little steed on your screen.

Mercedes Streeter

No, this isn’t a Honda Super Cub, but it does look like one. This wonderful machine is the Yamaha U7E.

[Editor’s Note: Holy crap that’s in nice shape! -DT]

In 1958, Honda changed the world. This isn’t hyperbole; the company’s release of the Super Cub didn’t just change motorcycling, but it allowed millions of people to have a cheap and reliable form of transportation. As our friends at RideApart note, the Super Cub was the brainchild of Soichiro Honda and Honda co-founder Takeo Fujisawa. In 1956, the pair toured Europe and found themselves impressed with the scooters out there. Fujisawa saw a small motorcycle as part of Honda’s future, but it needed to be more rugged than what he’d seen in Europe.

Fujisawa set out to build the motorcycle for the common person, and with Honda’s engineering expertise created what would become the best-selling vehicle in the world.


Over 100 million examples have been produced and ridden by possibly billions of people of all sorts of social and economic statuses all over the world. Honda even created the shockingly successful “You meet the nicest people on a Honda” ad campaign to get people on the fence about motorcycling onto a Super Cub.

Thus, it’s no surprise that Honda’s competition wanted a slice of the pie. Yamaha was quick to follow in 1960 with the MF-1. Suzuki followed with its M30 and M31. The trio look alike, but Yamaha and Suzuki both put their own spin on the Honda formula. For example, in the beginning the Yamaha and Suzuki were two-strokes while the Honda was a four-stroke.

1960 Yamaha MF-1. Credit: Yamaha

All three are underbone motorcycles. This design consists of a steel frame, sometimes tubular, with cosmetic fairings mounted to it. The frame rides low, allowing for easy mount and dismount for the rider. While not super common here in the States, you’ll find these motorcycles all over the developing world, and especially throughout Asia.

Honda, Suzuki, and Yamaha have used different names for their underbones through the years. Thankfully, enthusiasts have kept a good record of the Super Cub’s history. The same cannot be said for Yamaha’s effort. I found the most information by digging through Japanese sites.

The MF-1 became the MF-2 in 1962 with a bigger 55cc version called the MJ-2. Then, in 1965, Yamaha released another update. The company thought the then-latest update was big enough to deserve a whole new name. Yamaha launched a campaign that yielded 215,000 submissions for a new name. The new motorcycle got the name Mate.

1965 Yamaha Mate. Credit: Yamaha

The Mate was initially available with a 50cc and 73cc singles. The 50cc was named the Mate U5 and the 73cc a Mate U7. In 1971, there was another revision, and Mate model nomenclature now took on a V. Like before, the number (V50, V70, V80, and V90) referred to displacement.

So what is a Yamaha U7E?

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Mercedes Streeter

If you search online you don’t find anything. Searching Japanese sites also won’t yield much information. As it turns out, I’ve had the answer to this question for over three years, but it flew right under my nose.

I got an original service manual with my U7E and I opened it for the very first time this week.

Mercedes Streeter

In its opening pages, Yamaha explains that the U7E was the latest in the Mate line. And looking at the frame and engine numbers, I found that the U7E shares its frame and engine with the Mate V70. The “E” in the U7E’s name refers to the motorcycle’s electric start system, something that was more novel back then.

According to my manual, production began in 1971 for the 1972 model year. And so far as I can tell, these were available for just a single year in America. I can’t believe that I had access to the questions so many have asked for three years and I just didn’t open the yellow book. I’ve asked Yamaha for more information. I’d love to know just how many of these there are in America, and why production was so short.

My U7E has a bit of a heartwarming story and I got it all just for $500.

In 1972, it was purchased new from a Yamaha dealership in Wisconsin. Then, in 1976 it was sold to the previous owner, where it stayed in the family until I picked it up in 2019. It ran well for most of its years, teaching generations of the same family how to ride a motorcycle. The last time that it was registered was in 1986, as noted by these beautiful vintage plates.

The title that I have is the original that was issued to the family in 1976.

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Mercedes Streeter

It was last serviced in 2014, where the motorcycle shop fitted a new carb and fixed the wiring for the motorcycle’s lights. Sadly, it wasn’t ridden after and eventually stopped running that year. The previous owner never bothered to get it back on the road. I didn’t touch it, either, and instead bought a working, but far uglier U7E that I maybe kept for a few months.

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Mercedes Streeter

At minimum, it will need a good carb cleaning and a throttle cable to get back to life. The tank was drained, so it’s pretty clean in there. The transmission–a nifty semi-automatic where you just shift, no clutch lever–seems to work great and the engine does appear to have compression.

But what I really want to do is give it a good refreshing.

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Mercedes Streeter

It’ll definitely need newer suspension components and the mudguard is trashed. Thankfully, not only do I have a huge box of parts (including a new mudguard in the correct color), but I also have a service manual and a parts list. In theory, I have most of the parts to get this back on the road.

The rest will require some elbow grease.

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Mercedes Streeter

I don’t plan for this to be a full restore, but just enough for it to look pretty while having just the right amount of original parts. I kick this restoration off next week and so long as nothing gets in my way, you’ll see weekly updates in seeing this little guy coming back to life!

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33 Responses

  1. Gentleman, that is a lovely machine!

    I was growing up in Asia during the 60s so I very much lived and breathed on those motorcycles. I was born on a 1965 Yamaha Mate, literally! Dad and Mom were driving around town on their newly acquired motorcycle with Mom being nine months pregnant at the time. The ride must have excited me and I kick-started my mom into labor. Fortunately, they made it to the hospital on time and the rest is history.

    Can’t wait to see your progress. I wonder if it’s possible to post a video? It would be awesome to hear its engine roar.

  2. I drove one of these back in 1993 in Colombia. My girlfriend’s family owned it and it was normally used for deliveries (they owned a sandwich/burger shop). As a 16 year old Gringo who had never driven anything that wasn’t fully automatic it took a few minutes to get it right but that brief experience gave me enough confidence to later own a manual motorcycle. The Honda Cub (C70) was much more common but I believe this, like the Honda, were assembled in Colombia for a number of years. Riding this with my 21 year old girlfriend on the back, I was in heaven, especially when she told me to go to Las Caricias motel!

  3. I think it’s hilarious that they added an electric starter to a two stroke 70cc engine and bragged about it with a new model designation. You could probably start it using your hand on the kickstarter.

  4. I rarely check that /other/ automotive site anymore, but did those jerks not even give you a send-off post when you left? It seemed to be tradition when an author would depart, but I didn’t notice it in this instance.

    1. I pay little (well, now that Mercedes is here, absolutely no) attention to that site, but I believe Mercedes posted her own farewell. Pretty sure that the Herb forbade the send off roasts.

      1. I quit them entirely when the last editor said goodbye by whining about all the criticism the site got and how people neeeded to be more ‘constructive.’ Like, “Hey, maybe stop sucking” isn’t constructive?

  5. OMG. Airplanes yesterday. Tiny vintage bikes today. It’s amazing to have you here, Mercedes.

    I’ve only ridden the Honda equivalent, and that was hella fun. Yours is a beautiful specimen, running or no. Super excited to see updates as you fix ‘er up.

    I’m sitting on a rusty heap of parts that is slated in the next while to start its journey to being a (fingers and toes crossed) fully restored ‘48 BSA Bantam. Extra nice to find a kindred spirit here. I’m a sucker for just about any small vintage bike.

  6. I love underbones, too bad they are hard to come by in the US.
    Well, except for the modern Super Cub, but that’s just a fancy toy compared to the THDM and other Asian Cub-variants.
    I remember a Yamaha Town Mate from my childhood, possibly a later iteration of this bike.
    That one was 4 stroke and had a shaft drive.

    1. They are a lovely style of motorcycle. If you’re lucky enough, you might find a Sym Symba, which gives you the old-school Super Cub feel without having to keep an old one going.

      The Town Mate is indeed a later, four-stroke version of the Mate!

  7. I’m proud to say that my mother was one of the original nicest people you meet on a Honda. Dad bought her a 1963 Honda 50 which later became my first bike. I taught a friend of mine to ride it, then his dad gave him a Yamaha 50. Always bothered me to no end how much faster the Yamaha was. No good deed goes unpunished.

  8. That looks cute, my wife would love it. I’m sure you can get it running if the seals are still good. I got my wife’s Honda cm250c running again after almost 25 years. Apparently my first attempt in the oughts failed because I mixed up two carb jets since my second more careful carburetor cleaning worked.

  9. I love the idea of a Step Through bike of some kind, it would make a great stable mate for my ’74 Vespa 125 Primavera. It was my ride to high school when I only had a learner’s permit, and I adore it. But I feel like the larger wheels on a Super Cub would make for a much better ride. Going into a corner at 45-ish on a Vespa can be a bit unnerving.

  10. OH MY GOD! My dad had this EXACT bike, right down to the color! It was the motorcycle I learned to drive on and it was an absolute blast. I have never seen one before or since and I’m blown away by this proof that I didn’t hallucinate it.

    I failed my written motorcycle driver’s test because this thing was an automatic and I hadn’t learned what a clutch was (“Should you clutch in while turning?” was the question I got wrong). I aced my road test partly because the examiner gave up in disgust during the ‘parts of the motorcycle’ quiz where I responded “Don’t have one” to half the questions (Clutch? Headlight switch? Tachometer? Fuel gauge?). It was a group test and I vividly remember one 100lb woman struggling with her Harley during the ‘move unpowered your bike around’ test while I was able to steer mine through the pylons with one hand.

    I loved that thing and drove it as late into the Canadian winters as I dared. It had an additional mirror stalk on the right and I can remember fixing both of them with JB Weld when they’d inevitably snap off if (when) the bike fell over. The tires were so old my dad forbid me to put a passenger on the back as he was terrified they’d burst. I remember taking off the rear wheel to replace a tube(!) and having about 3 parts left over after reassembly – it never seemed to matter. I eventually ran it out of oil and killed it (dumb kid) and I’ve never owned a motorcycle since.

    Wow, does this bring back memories!

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