How to you adjust the timer?

Adjust the Timed freeze. The freeze timer is an adjustable timer used to control the ice bridge thickness. The freeze timer is factory set but may need to be adjusted upon initial start up of the machine. When time is added to the freeze timer the length of the freeze cycle is increased, therefore the ice bridge thickness is increased. When time is removed from the timer, the freeze is shorted and the ice bridge thickness is decreased. The freeze timer can be adjusted by sliding one or more switches to either the ON or OFF position to 1/8'' ( 3mm ). If bridge is too thick remove enough time from the timer to achieve proper thickness. If bridge is to thine add enough time to timer to achieve proper thickness.
NOTE: The freeze timer on ECP models is located on the circuit board. It operates and is adjusted as described above. Now if you have had this machine for awhile and it was making the right bridge thickness and is now making thinner ice i would look at the purge valve to make sure it is not letting water seep out of the sump tray during freeze cycle this will cause the sump tray to keep filling up with water and will cause thin ice.

reduce the thickness thermostat that initiates the timer to minimum, then increase until good ice made.

Good morning to you
If the timer is electronic; hold down the set/mode button while you adjust the timer. If the time is adjusted by hand turn it the desired distance. OK in both instances.
enjoy your coffee
Kolbrun.

Timer is not identified.
Check options below:

1) Open following link for ST01C timer
http://waterheatertimer.org/ST01C-program.html

2) Add a comment and describe timer indetail

GE 15071 sold at Home Depot and on-line has feature that adjusts for daylight savings time.
GE 15086 does not offer automatic adjustment for DST
http://waterheatertimer.org/GE-timers-and-manuals.html#15071

Daylight savings time (DST) is not same as dawn-to-dusk astronomical timer.
GE 15071 and 15086 single-pole timers do not have dawn to dusk astronomical feature.

For single-pole dusk-dawn astronomical with DST, Lowes sells Utilitec-0192773
http://waterheatertimer.org/Program-wire-Utilitec-0192773.html

For 3-way switching, 7-day DST -or- dawn-dusk astronomical:
http://waterheatertimer.org/Aube-timers.html

The timer must be in manual mode for the oven to work. Turn the oven ON. With the oven turned on make adjustments to the two knobs. These are generally stop/start timers. These turn and you can also normally press them in. Be patient. When the oven indicator light comes on it will be fixed.

Utilitech self-adjusting wall timer # 0192773

There is no adjustment if timer clock is running slow.
Timer clock motors run slow when the motor starts to fail.
There are no replacement clock modules this timer.
Buy a new timer at Home Depot, and swap out insides of timer using 1/4" hex nut driver, and then return defect timer in new box.
http://waterheatertimer.org/GE-timers-and-manuals.html#15207

the timer is fixed for cycle times. if it has adjustable cams you can adjust it. most are fixed. get a different timer or consult the manufactirer.