This depends how handy you are and on whether or not loosening the hands on your clock is difficult.
How to adjust antique wall clock.
Turn it to the right to move the disk up and to the left to lower it.
Use the adjustment nut.
The clock can be made to go faster or slower by means of the nut at the bottom of the pendulum.
On clocks without a pendulum just move the time adjustment lever.
Video tutorial showing how to adjust the beat of an antique grandfahter clock.
Simply count the chimes at a convenient time say 10 then stop the clock immediately.
Then in your own time loosen the hands and move them to the 10 o clock position now re tighten them.
Move the hour hand backward and forward between the hour positions until the clock chimes the correct hour then adjust to the correct time.
On clocks with a pendulum move the pendulum disk up to speed up the clock or down to slow it.
Open the side or back panel to the grandfather clock to reveal the chime mechanism and check the hammer adjustment only if you are sure the chime tone sounds incorrect.
Antique clocks wall clocks mantle clocks.
Secure the screw into the wall angled upward at a 45 degree angle and hang the clock.
Choose the proper size wood screw typically a 8 10 or 12 to fit the hanger at the top back of the clock and long enough to go securely through the wall into a stud.
Turning the front of the nut to the right speeds up the clock and turning it to the left slows it down in other words move the nut up to speed up or down to slow down.