Pretty simple really. First head over to bunnings and get a couple of meters of transparent plastic hose the right diameter for the job (roughly the same size as vacuum hose). It costs 89c a meter but I got overzealous and got about 4m.
Next head to K-mart and get a pair of straw sipper cups for children. They have to be the sort with a suction hole on the lid and a tight fitting straw which goes into the cup.
Take the lids off and fill each cup 2/3rd's of the way with ATF (I used dex3 but I can't imagine it matters) or a similarly viscous fluid. ATF is ideal because it's just thick enough to avoid splashing about, but also very easy to see and thin enough to flow easily through the tubing. I hesitated at using water because it's so runny that the ripple effect from the engine running might suck it into the motor, and then bad things happen
Cut a length of the bunnings hose and shove it into either of the lid holes so that it goes down into the fluid in both cups. Cut the remainder of the hose into two big lengths, attaching one to either vent hole on the sipper cups. They have convenient tube bits that stick out seemingly for just such a purpose! I had to use the slightly narrower tubes the cups came with as 'adapters' for the bunnings hose as it is slightly too large to seal.
Hook up either hose to each carbs and you're away. The level will alter depending on which carb is making more vacuum, it transfers very slowly even when the carbs are way out of whack, so there's no danger of the level suddenly rising and being sucked into the carb. With a little thought you could easily apply this to a bike with 4 carbs.
I'm aware that there are already many write-ups of this on the net which are better than mine, but I thought I'd put this up because it verifiably works and is nz-specific for the ingredients. Also costs less than ten bucks
Crappy pics, ahoy!
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Originally Posted by Coolz
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