no no no Northern ! I never order from them (anymore) When I first started in 1995 I ordered stuff and got bad stuff out of the box order one from Russ Johnson (Southside) or Bob (Pressure Tek) and see.
Ok back to the problem at hand, have you tried what John said ? If the arrow is pointing at the machine it is wrong, the arrow must be pointed towards the gun.
Also I have seen that some wont pull close to the machine, Squirtgun (Scott K) had the same problem, his worked at the reel only, that being said if you have a short jumper hose try it, hook it to the output on the machine then clip on the injector (1.8) clip your hose to the injector and see what happens, also keep in mind you may not notice it pulling a lot due to the small gpm of your machine it may take 5 minuites or more to start noticing a real change in the level of chem in the bucket so make it easy and mark your level in the bucket first.
Also try pullingt the tube out of the bucket, pull the strainer of the tube and put your finger over the end and see if it is pulling then.
IF none of that works let us know and we will try again