Fender HAMMERTONE SPACE DELAY - Internal Trim Potentiometer Adjustment; Speed Trim Pot Function; Depth Trim Pot Function

INTERNAL TRIM POTENTIOMETERS (ACCESSIBLE BY
REMOVING COVER)
SPEED trim pot adjusts modulation rate when MOD SWITCH is active.
DEPTH trim pot adjusts modulation depth when MOD SWITCH is active.
Remove cover using a flat-head screwdriver. Adjust trim pots using a
Phillips-head screwdriver.
Try temporarily dialing in a short delay time when adjusting the modulation
controls. The amount of modulation will remain consistent for short and
long delays, but the modulation delay is ahead of the main delay, and
with a long delay time dialed in the trim controls can feel sluggish.
SPEED TRIM POT
DEPTH TRIM POT