Worst case scenario is a handful of allen head bolts being removed, the hydraulic actuator pulled off and cleaned out, new gasket, reinstall bolts connect fluid line to master cylinder and add fluid. Since you've got a piston inside there vice the ball and ramp of a cable set-up, it doesn't hurt to take it apart and clean the piston every so often anyway. Its mechanics 101 and can be done with a set of allen wrenches in about 10 minutes. FYI, hydraulic clutch is a misnomer of sorts. The trans and clutch are exactly the same irregardless of the engage/disengage mechanism. The difference is on a cable set-up, you've got an adjuster bolt with a locknut on the clutch hub side and a shorter push rod. On a "hydraulic" clutch, you've got a bearing where the adjuster bolt and locknut are on the cable set-up and one long rod all the way through the trans mainshaft. The hydraulic piston pushes on the rod to engage/disengage the clutch vice the cable pulling on a ramp that rolls up on a ball bearing which pushes on the short rod which is up against the adjuster rod. Lot less stuff to wear out on the "hydraulic" clutch and of course no clutch cable to break. As noted, the only issue is that the actuator piston can get dirt in it or you can have a leak in your line.
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