Boost bottle?

[zyklonlee]

Does this really do anything?Are there any mods you can do to it? :?

[MELLERS]

D'ya mean the "YEIS" thingamy on the frame that comes from by the reeds?

[zyklonlee]

Yeah thats the one,is it also known as the boost bottle or have i just made that up? :lol:

[MELLERS]

dunno about the "boost bottle" name but then i haven't had many 80's two smokers! :lol: , unfortunately i was wondering the exact same thing as you, just wanted to see if that was what you meant. I xan't see that much point in it really cos i never seen one on anything else?, but I AM SURE that someone will come across this and put us "Idiots" into place soon enough.

[zyklonlee]

LOL! yeah mate, doesnt seem to do much but if we take them off or **** about with them somebody will come on here and tell us we have just knackerd our bikes! :lol:

[FingerZ!]

Quoted from manual! :D

'YEIS - General

1. The Yamaha Energy Induction System (YEIS), more popularly known as the boost bottle, is a feature developed by Yamaha's design staff to increase intake efficiency in the low to medium speed ranges, thus making the machine easier to ride and increasing fuel economy.
2. The YEIS components are very simple in desing and construction having no moving parts at all, and will require no maintenenace at all in the life of the machine. The hose and reservoir shoul dbe examined whenever the fuel tank is removed during the course of routine maintenance or for repair work. Check carefully for any signs of splits or cracks, and that neither of the componentsis chafing against anything else. Check very carefully the inlet stub and hose connections for deterioration of any sort, as these are the only two areas likely to suffer. Ensure that the hose clips are securely fastened at all times.
3. If at any time a component is found to be defective, it must be renewed. Use only genuine parts supplied by an authorised Yamah dealer, as it is essential that the correct internal dimensions and total capacity of the hose and reservoir are preserved if the system is to function correctly.'

I dont know - Idiots!!! :shock: LOL!! :lol: :P

[zyklonlee]

:shock: :? I wonder why other 125s dont have it then?Maybe yamaha put it on just to puzzle and confuse everybody,bastards! :mrgreen:

[MELLERS]

good old haynes, covering everything as usual! :lol: the dimensions are?......the way it works is?..........

Cheers tho fingerz!

[FingerZ!]

no problem - thort i would be a smart arse lol