Harbor Freight Tools 3914 - Manual (Page 20)

Page 20 For technical questions, please call 1-800-444-3353. SKU 3914
adjusting Sewing Speed with
pulleys (sold separately)
This machine is a fast running machine.
It can be adjusted to a slower running
machine by changing the pulley on
the motor to a smaller diameter pulley.
Consult a qualified sewing machine
repair shop to replace the pulley with a
1-3/4” or 1-1/2” pulley to slow the speed
of the machine.
Maintenance
Advanced Machine adjustments should 1.
only be performed by a qualified
technician.
Check the oil level weekly when the
2.
machine is used daily. Add sewing
machine oil as required to the high level
marking.
Clean the machine with a clean, damp
3.
cloth. Do not use solvents or thinners.
After each use, check for lint build up
4.
and blow clean with pressurized air.
Remove and discard any stray thread or
fabric pieces.
Check the Belt (71j) tension after first
5.
use and then weekly, and adjust as
described in adjusting the Belt tension
under the assembly instructions.
When not in use, cover the machine and
6.
store in a clean and dry location.
reV 10b