How to install supply lines for Grohe k4 faucet

The often happens when the new cartridge is misaligned.

https://www.google.com/search?q=Installing+new+Grohe+cartridge+470800

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look at the ends you need to connect then go to a plumbing supply store and get the adapter.

screen filter needs cleaning or a replacement.

http://docs.homeclick.com/PE-Links/Grohe/Grohe-33755-manual.pdf

Check out this link for a manual with instructions for this faucet.

Could be hung up if this has a weight to pull the hose back........

1. If by replacing the flexible hose you mean the hose for the pull-out portion - you have more than likely kinked or bent the supply line to the hot (left) side of the faucet.
a) If this supply is braided, then simply shutting of the water supply, removing the braided line and either replacing or attempting to straighten it out will be your best bet.
b) If the supply is copper, you will have to cut the line cleanly and carefully. you will then most likely need a 1/4" or 3/8" compression/quickconnect BY 1/2" IP fitting to complete your repair.
2. Other possibilities include:
a) Failure inside the faucet body which will most likely be warrantied by Grohe if you push them hard enough.
b) A problem at your hot water tank, most likely the outlet side and *perhaps* you hadn't noticed the problem elsewhere.
c) The hot valve failing to reopen fully despite all appearances; applies if you turned off the water under the sink for your repair.

With my past experiance with any Grohe product,you will experiance a problem.I have been doing plumbing service work for 20 yrs. and every time I encounter this product,there is always a major problem.I don't know what the big deal is about this product,it cost too much and parts are hard to come by,you must order most of the time.then wait 3 to 4 weeks.hope it's the right part!

i have solution please send me photograph clearly

There should be an o-ring on the mating surfaces of the hose and the faucet that my be missing.  It could also me that the big washer in side of the faucet (under the cartridge) has been shifted.  
I doubt it is the cartridge itself, always try the cheap ideas first.

check the airraider on the spout of your faucet it unscrews and can build up with junk and sadly some times sediment works its way in to your faucet and clogs the stems and with a grohe faucet being as pricey as they can be i sugest replaceing the stem as aposed to getting another grohe faucet