Lexmark 302 - Manual (Page 180)

Left Margin Alignment
You can print a single line of text to help in setting the left margin
position using the Left Margin Alignment Test. You can also change
the current left margin position using this test.
You can set the left margin position from 1 to 66 units (where each
unit is 0.686 mm [0.027 in.]). The factory default setting is 10. The
margin is measured starting at 3.81 mm (0.15 in.) from the center of
the tractor pins for continuous forms and from the left edge of a cut
form.
To align the left margin position, follow these steps:
1. Enter the Operator Print Tests (see “General Test Instructions”
on page 4-1).
The printer displays
2. Press Scroll ↑ or Scroll ↓ until the printer displays
3. Press Enter or Start to begin the test.
The printer displays
where xxx is the current value of the left margin position.
OPERATOR PRINT TESTS
Printer Demonstration
OPERATOR PRINT TESTS
Left Margin Alignment
Left Margin Position
ᑍ xxx
4-6 User’s Guide Model 302