I love restoring old scooters. I bought a Yamaha Y20 (YG1) from a garage sale for 30 bucks. Its pretty rough, but mostly there.
The thing is, its my first endeavor into the inner workings of a magneto system. I took the magneto apart the other day and found a bunch of unconnected wires. I think I know where they go, but I'd really like a service manual. I was wondering if anyone has one in PDF form, or at least a wiring diagram so I can get this thing running.
On a side note, if anyone has the shift linkage and side cover for one of these bikes, get ahold of me. Mine is lost in history. Until I find one, its gonna be like 'pick a gear and ride'.;) Thanks all. Long time lurker (1997). First time post. I found you on ebay. I am not sure if the parts are compatible or not, without seeing them in person.
I'm pretty interested in I've noticed something REALLY weird about my bike. I was trying to figure out why I had no spark, so I was digging around. Looks like someone jerry rigged an external coil onto the lighting coil.
I'm going to need a new primary coil (or complete magneto set for that matter). The weird thing is this.
The spark plug wire goes directly to the magneto coil, instead of to an external coil like you would expect. I wish there was something that said 'the YG5T and the y20 have the same engine'. I've been searching microfiche and well, the components are just hand drawn, Its a nightmare.
The Yamaha YG1 80 was Yamaha's first comercially successful motorcycle. First marketed in Japan as an 'Executive Motorcycle' it was a way for someone to get off their bicycle and onto a motorcycle. With deep drawn fenders and mud flaps, a fully enclosed chain, and a heel-toe shifter it was possible for someone in office clothes to arive at work looking good. First introduced in the US in 1963 1/2 it was a success here, but mostly in the trail trim. I have not seen another street YG1 in the 2 years I have been looking on Ebay. Many of the 70's motocross stars started racing YG1 trail bikes. YG's were many peoples first bikes.
The YG1 was technologically advanced for it's day. It was the first production motorcycle to have oil injection. It was also the first motorcycle to use a VM style Mikuni carburetor with a cable operated starting carburetor. These 2 advanced made the bike easier to start and more reliable.
The engine is a 75cc rotary valve 2 stroke that was considered fast at the time, especially compared to the small Hondas that were it's competition. The bike lives on today, and is still being sold in Asia.
You can still buy a 90cc version, and I have ridden on Tricycles in the Philippines that use them. They sound exactly the same. My Riding impressions are: It is hard to believe this is a 42 year old bike. Compared to some of the old British bikes I have ridden the Yamaha YG1 is positively civilized. It is small for my size, but still comfortable. The suspension is good, it handles well, and it has good brakes.
The engine feels like the bikes I rode back in the 70's. It is buzzy if you rev it, and the stamped steel frame acts like a megaphone.
The bike is more torquey than rev happy, and you can tell it was meant to amble along at 30 MPH the same way they drive in the cities in Asia today. I am sure you could putt around all day on a YG1 without it puking all over itself and getting loaded up like a piston port 2 stroke would. Carburetion could be a little cleaner, but compared to the Amals, Bings, and other carbonators of the day it is pretty good. Shifting is good, but kind of vague. With the old 4 ball Sachs type shifting mechanism you do not have any dogs to feel so it is more a matter of getting the shifter all the way to the stop.
It shifts backward (all down) and heel toe shifters are hard for me to adapt to.It is also easy to see why most people tossed out the enclosed chain case-Under some loads the chain starts to hit the sides making a racket. I really like the looks of this bike. The 'Eguri' sculpted tank with chrome sides and knee pads, the fenders with the little mud flaps.I 2 toned the frame like they were painted in Japan, and the seat cover with the white sides looks early vintage Japanese, and adds class to the bike. I had planned on a Tiddler ride around Lake Erie on this bike, but it is just too small to haul me and some gear 800 miles. Acramatic 950 manual. Even riding around my house you have to be carefull not to get run over by traffic.
Even if it would go 55mph it would still be too slow. It probably needs to be used as a pit bike, True Grits Fun Runner, or as a part of someones Yamaha collection.
1963 Yamaha Yg1
Mike 28-Dec-2009 00:26 I bought a 1963 yamaha yg1 at the beginning of the summer and have done a lot of work on it. However everytime I took it back to the guy who tried to fix it the same problems were still there. Problems were oil leaks and the most major now is it won't start.
I would ride it but then it would go into a loud winding then stall. The headlights and power on the bike always die after 20 minutes riding it until charged again. The major problem I would like to fix now is getting it started. I've cleaned the carb, put a new spark plug and fuel petcock on but still nothing. MY email is [email protected].
Welcome to the manuals page, here you can find part lists, rider’s manuals and service manuals for the various versions of the Yamaha AS1, Yamaha AS2 and Yamaha AS3 as well as a few of the related models. All the manuals that are hosted here are free for you to download and print for personal use! If you have questions you can’t find the answers for in these manuals, click over to the contact page and send us an email! To download a local copy of a manual: right click the picture and select “Save Link As”.
Fri, 07 Jun 2013 00:00:00 -0700 The new Range Rover Sport takes on the Pikes Peak Hillclimb Pikes Peak is an unforgiving Hill Climb, spanning 12.42 miles and 156 corners, rising to 4,300 meters above sea level with oxygen levels at the top down to just 58 per cent of those at sea level, making it incredibly hard for both man and machinery to function. But despite the challenge, Land Rover has taken the new Range Rover Sport up Pikes Peak in a new record time for a production SUV, covering the 12.42 mile course of twists and turns in just 12m 35.61s at an average speed of 59.17mph.
You won’t be surprised to learn that Land Rover choose to use the new RRS with the 5.0 litre Supercharged engine for the record run, but apart from fitting a roll cage and harness seatbelts, the Sport had no modifications at all.
Hello all, I was given a Yamaha YG1 70cc bike today, coolest little thing. I want to restore it. It's registered as a 1970. When I look at the pictures of a 1970, it's not the same bike. It looks more like a 1972 (from the pictures, color, headlight, and front turn signals). I can't find a way to do a VIN search because of the odd number. The VIN is G3-100680 on the registration and on the front part or the frame, does this mean it's a 73?
I want to see about restoration parts etc, but want to make sure it is the correct year. Any help is appreciated.
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