No need to disconnect anything...hm,what was it...engage rear to provide access to the allen screw on top of the filter head(if you have the top screw setup)...rotate steering wheel to clear room for taking out the filter canister.
Make sure the canister stem and bolt orifices are not plugged...clean the plastic mesh full flow filter,install a new by-pass filter.Reinstall with new gasket and copper waqsher...You may want to saturate the by-pass filter with oil...