1.Why Does the Needle Protrusion Change with Different Stroke Settings?
The CPTINK LT’s needle-drive system is designed around the 4.5 mm stroke setting.
When the machine is switched off and the stroke is set to 4.5 mm, the needle can retract fully into the cartridge tip, as shown below.
The CPTINK LT set to a 4.5 mm stroke
The needle is fully retracted inside the cartridge tip
When the stroke is changed to a shorter setting, the needle’s resting position will appear different.
At the 2.3 mm stroke setting, the needle may extend the farthest out of the cartridge while the machine is switched off, as shown below.
The CPTINK LT set to a 2.3 mm stroke
The needle extends farther out of the cartridge tip
This difference is caused by the internal stroke mechanism and only reflects the needle’s resting position at different stroke settings.The actual needle protrusion should be adjusted by rotating the grip after the cartridge is installed.
2.How to Adjust the Needle Protrusion
The needle protrusion on the CPTINK LT is adjusted by rotating the grip.
- Make sure the machine is switched off.
- Insert the cartridge securely into the grip.
- Hold the upper section of the machine firmly.
- Slowly rotate the grip.
- Watch the cartridge tip and continue rotating until the needle reaches your preferred position.
Rotate the grip to adjust the needle protrusion
Important:
Needle protrusion is adjusted by rotating the grip—not by changing the stroke setting.
The stroke setting controls the machine’s stroke length and operating characteristics, while rotating the grip changes how far the needle extends from the cartridge.
3.Before Using the Machine
Always make this adjustment while the machine is turned off. After adjusting the grip, check the needle position carefully before turning the machine on and beginning work.
The appropriate needle protrusion may vary depending on the cartridge, technique, and personal working preference, so confirm that the setting is suitable before each session.
