Fuel line/Vacuum line question

[Eydugstr]

Found a crack in the vacuum line that runs to the to top of the #1 carb, had enough slack in the hose to cut off the cracked section and re-attach it to the carb, but now I'm considering replacement of the fuel & vac lines. Bike is a '90 with 56k, no idle or throttle response issues, cruise control works fine. Is there anything particular to this bike I should be looking out for (old or discontinued vac canister, fuel system components, etc). Thanks for your opinions.

[triton28]

Considering the age of your bike it would bet most of the lines/hoses are original, unless you can confirm otherwise. If that is the case, it would be a good winter maintenance project to replace the lines/hoses.
While I am in no way advocating that one should violate the EPA emission controls installed on U.S. models, here in Canada the only hoses/lines going to and/or from the carbs are the fuel line from the pump, the 2 clear, (when new ), open ended hoses going over the top of the lower airbox, and the ignition vacuum advance hose on the #1 carb. The 4 small rear of carb hoses do not exist on Canadian models, and the 4 brass hose barbs on the carbs are blanked off with rubber caps similar to the 2 rubber caps used on non California U.S. models. A lot less plumbing.
Also, as ekap1200 has pointed out numerous times, make sure to use a genuine Kawasaki fuel line and clamps from the tank to the filter.
If you are starting to see cracks on the rubber lines it may also be a good time to replace the coolant hoses and o-rings as they also may be older than dirt.
Just some thoughts,
Dave

[Eydugstr]

Ty, triton - For right now I'll keep double checking things and repair what I find. At the end of this riding season will go through and replace the fuel/vac lines & cooling hoses.