Hi How do I go about removing the silencers

Try ebay.co.uk You may be surprised. The CB points are sold as kits and the dealer will find you new silencers etc.

The site below (although European based) has all the colour reference codes applicable. Yamaha are a parts bin manufacturer, in that they cobble necessary parts from different models and sometimes share a range of colours across a model, particularly fashion type schemes.
The second link is bikepics, make a consensus from all the models shown for your bike.
Cheers.

http://www.rsbikepaint.com/

http://www.bikepics.com/yamaha/rd350/

hi,from memory these were the first of yamahas ypvs system,check that the power valves are working,also check that the battery is in good condition,as the cdi unit needs at least 12.5v to advance and ****** the ignition timing,if the battery is low,the bike will idle ok,but when you give it throttle the ignition will not advance and lift the rpm..hope this helps..cheers

first off what country are you in ???? the 1979 rd 350 was an air cooled engine, same as 250 . the 1989 engine was water cooled with yamahas ypvs exhaust valve both very differnt in design although some frame and body parts cross over.the manual for the air cooled is: isbn 0 85696 505 7 . i dont have the water cooled number but could find it you require. the rd was exported under various different names ie: rd , rz , ypvs and so on. you can contact me @ [email protected]. hope this helps.

the floats need to be set they are not seating like they are supposed to

Use the factory " YAMALUBE " oil. Engine oil is not a big deal but you can't go wrong if you stick to factory products.

Hi,

If the tap is leaking, it will have to be replaced.
The seal kit for the tap is not available from the agents.

Good luck

Jon