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Change jets for the horsepower improving
Posted by Jindřich Minář

I would like to give a brief instruction in this section how to get more horse-power from the quad Basnan BS200S-7.
There is 98 basic jet in it and this is not enough for a good power. But I wanted more and that´s why I´ve decidet to change jets for the horsepower improving – I´ve changed the basic jet for Škoda Favorit´s one with a label 125.

tool: number 8 and 10 spanner, cross-head screwdriver.

Take the saddle off and undo the gum cover. The forward screw bolt only. Uncover it towards back wheels. Firsty, take the air filter off with it´s plastic cover. Than loose the cross-head screw on the carburetter and take a bowden choke with a lever system out. ( see picture 1 ). Now undo the screw female with a bowden accelerator and lift the inside of the carburetter. Loose both screw females keeping a carburetter and we can jack it up for turning it for float-chamber loosing.( see picture 3 ).
You can see the carburetter main jet now. Change it for Škoda 125 jet. Install it.
If you add more fuel, there must be more air, as well. I´ve done it by taking the air filter cover off. But what is really neccessary – take a hose for motor air sucking out of a plastic cover and install it into a forward part of air filter. ( see picture 2 ). Lastly, adjust the carboretter. Take the lid off ( see picture 4 ), move a needle on a carburetter slide to the last notch from up. Do it, in the other way, the engine will have bad reaction and there will be a point gap after an acceleration.

Investment: not too much, the jet is gainable in car breaker´s yard.
Imbus = hexagonal key size 8 – 10