My Subaru Forester is having trouble shifting gears after having had the clutch system replaced

Once the freeplay is set it should not alter, the driven plate linings may have come loose or the pressure plate may have a broken spring. If so replace as a kit including the throw out bearing and spigot hearing.

Does clutch go to floor --if hydraulic check fluid level possible leak air in system--blown line-- burnt up clutch -bad slave --regular clutch --spring --throw out bearing --broken fork --blown clutch----shift linkage out of adjustment--bad gear in transmission

it sounds like clutch is not desingauging is the hyd slave cylinder full and did you bleed it

Interesting problem. A bent fork is not impossible, but this would usually make the clutch not release fully. Try increasing the pedal free play, so that you can guarantee the slave cylinder is not holding the clutch slightly open. If not this, then it all has to come out again ...

When you say you can get it to go into all gears except 5th .Dose it shift good in all other gears. This could be a problem with one of the clutch cylinders . Subaru has a pritty good transmissiom and if you are not haveing a problem with 4th gear i would think clutch . Look under the dash board at the clutch pedal on the inner fire wall if there is oil on it the master clutch needs to be replaced . Also check the fluid resivor if that is low there is likely a leak in the clutch system and if fluid can get out then air is getting in . The olny other thing besides the transmission needs to be rebuilt is the shift tower its at the base of the stick shift and is pretty much a unit including the stick and the parts attached to it . Look for these things and hopefuly its not a shifting fork inside the transmission

if you are having troubles getting the car into gears then it will be hydraulic it will either be your master or slave cylinder that will need to be replaced ,but if the clutch is slipping then it will be your clutch plate that needs to be replaced

If this is a manual (5 speed) - you may have a broken shift fork. You'll want to either replace just the shift fork, or (best) - purchase a clutch kit for the truck as well as the shift fork; the kit will come with everything you need to replace the clutch. It is not necessary to replace the clutch components, however it's best to while you're in there, that way you know everything is new and good. Otherwise, after pulling the transmission, and verifying that the shift fork is the issue, then replace the shift fork. (It's best here, to replace the throw-out bearing, (it attaches to the shift fork) as it is most likely damaged.
Please let me know if you need further assistance.
carsandcomps,
Guru, Premium Expert @ Fixya.com

There is a clutch fork and it's bolted to the transmission bell housing. It's what pushes on the clutch bearing, disengaging the transmission from the engine, which allows you to safely change gears. If it's broken, you will surely have to replace that clutch fork in order for you to do any gear shifting in the future.

Check TP sensor.

Sorry for your loss, you should be able to get it changed for less, around 600.  Did the clutch slip at all before it broke?  Can you now put the car in any gear with engine idling w/out the pedal?  If yes, then the clutch is worn to nothing.  If no, then it's a broken pressure plate or clutch cable.  Does it feel like there is no pedal pressure at all?  This indicates no cable or hydraulic pressure (if your is hydraulic) and a cheaper fix.  Good luck!