1972 Yamaha DS7 250 History - Yamaha YDS7 Classic
Inspired by the race bikes of the late 1960's, the Yamaha DS7 250 (or also called Yamaha YDS7) was lighter and slimmer motorcycle than its predecessors. It was yet another step towards the famous Yamaha RD series with reed valve induction system. The mighty Yamaha YDS7 was introduced to the market in 1972 and soon became popular amongst racing bikes enthusiasts.
Yamaha DS7 Specifications
1972 Yamaha DS7 had air cooled 250cc twin two stroke engine with piston port controlled fuel injection. The crankcase housed 5-speed gears with a chain drive transmission, the front wheel as well as rear wheel were fitted with expandable drum brakes. It also had only manual kick start. There was no need to pre-mix fuel and oil, the oil tank and the fuel tank were kept separate with sight glass into oil tank providing rider access to check the levels.
Early Yamaha motorcycles were easily identified with engine numbers matching the frame numbers, usually introduced in a specific colour signifying the year it was made. 1972 Yamaha DS7 250 was produced in Candy Orange colour with Serial No: DS7-100101-125298.
With the introduction of reed valves in 1973, the Yamaha RD250 was born.
1972 Yamaha DS7 Parts
As motorcycles evolved so did their parts and factories had to adapt. Some parts are just not economical for Yamaha to produce anymore, so we have decided to stock some high quality reproductions for this classic Yamaha DS7 café racer. If you can’t find a specific part on our website to fit your DS7 250 restoration project or you need a parts list, please email us.
We understand that especially rubber parts and seals disintegrate over time. We now stock over 80 essential Yamaha YDS7 parts required for your restoration project.
Air Cleaner Parts
If your motorcycle loses power, it is usually sign of intake issue. We stock most of the essential rubber items for DS7 airbox repair such as airbox dampers, airbox strap, carb. manifold, and well as intake joint with matching clamp and spring band.
Stand, Footrest & Brake Pedal Parts
If exposed to element, footrest rubbers crack, we therefore stock front & rear footrest rubbers, gear lever as well as kickstart rubber. We also have footrest dampers, stand stopper, tension spring and various nuts and bolts in stock.
Crankcase & Transmission Parts
If you need to rebuild your crankcase, you should not opt out for cheap oil seals. We supply ARS Japan OEM original crank seal kit with smooth seal edges ready to be fitted in. Add new gaskets or breather and your restoration is set for success.
Oil Pump & Tank Parts
Rebuilding an old oil pump is certainly easier than finding a new one on the market. Through we don’t supply hardware for it, we have a full kit of seals and gasket to help you restore your classic Yamaha lube oil pump in no time. We also stock replacement oil tank windows, dampers, pipe holders or even blanking plugs if you decide to remove the pump altogether.
Many of these parts have been discontinued for decades! We don’t aim to provide a complete list of spare Yamaha DS7 250 parts, but If you can’t find a specific part on our website to fit your restoration project or you need a parts list, please contact us via email address or the contact-us form below. We also offer free shipping on orders over certain value.
If you need spare parts for Yamaha RD models, we have a dedicated category for these bikes too.
Here are also some handy links:
Yamaha DS7 bike road test article at Classic Motorbikes
Dedicated DS7 Forum at Caferacer.net
Inspirational video of finished Yamaha DS7 restoration project