Replacing white lines inside pump....

Could this be related to the "new inks"?

 

Should be no problem replacing just the broken part as long as you have the correct replacement tubing.

 

I have replaced the lines in the pumps on a mimaki JV3 worked great just use the right tubing. Some tubing is softer than others. http://www.solventinkonline.com should have the tubing just make sure you get the clear tubing the white tubing is alot softer and wont last long in the pump. Call them and double check the tubing size. There website is not so great but its a one man show and the guy is really nice. Also when you replace the tubing in the pump make sure that you have the tubing pushed in all the way and that the gears are not rubbing on it this will kill any tubing very quickly. Last thing check that the outside little plastic piece that the tubing gets pushed against isnt cracked and flexing this happened to me and I kept having weak suction and then the tubing would shift a little and the gear would rub so make sure thats not happening as the tubing should not be able to rub if everythin is snug like it should be. Good luck.

 

While it's possible to replace the tubing, I wouldn't recommend it. Even though the pumps are fairly straight forward, if you don't get the tubing in the exact right spot, it will just cause problems, cause failures, and in general just increase your headaches. Better served to buy new pumps, install them and call it a day.

During installation make sure that they are run in a manner that keeps them free of the gears, mutohs are wire tied to the supports to keep them in place.

 

You can also go to your local lawn mower repair shop and buy a foot or two of gas line for the weed wackers. Yup, good stuff.

 

I WAS referring to OEM ink.