J.P. Instruments Fuel Scan 450 Pilots Guide - Manual (Page 27)

FS-450 Quick Reference Card
Reset Alarm
Temporary reset (next 10
minutes): tap STEP.
Reset for remainder of flight:
hold STEP until the word
appears.
Reset Fuel Used
1. Tap STEP until USD
indicator lights up.
2. Hold AUTO for 3 seconds to
reset fuel used to 0.
No Fuel Added
1. On initial power up see:
2. Tap STEP to exit.
Totalize Fuel Used
1. Hold both STEP and AUTO
until you see:
immediately followed by:
2. Tap STEP three times and
see:
3. If you want to accumulate the
fuel used, tap AUTO and see: