Titan 0290349 Knob Assembly
Knob Assembly for PowrLiner Sprayers (3500 Series, 4500, 5500, and More)
The PowrLiner 0290349 Knob Assembly is an original equipment replacement part designed for multiple PowrLiner airless sprayer models. This knob typically controls pressure adjustment, priming, or other critical settings, providing a positive grip and smooth rotation for precise operation.
Over time, knobs can become cracked, worn, or broken due to frequent use, impact, or exposure to chemicals. A damaged knob makes accurate adjustment difficult and can compromise control of the sprayer. Replacing the knob assembly restores full functionality and ensures safe, accurate operation.
What it does and when to replace it
| Pressure control | Adjusts spray pressure by turning a valve or potentiometer |
|---|---|
| Operational interface | Provides ergonomic grip for precise adjustments during spraying |
| Visual indication | Often includes markings or pointer for setting reference |
| Cracked or broken | Visible damage that affects grip or structural integrity |
|---|---|
| Missing knob | Knob has fallen off or been lost |
| Worn splines / bore | Internal splines stripped, causing slipping on shaft |
| Difficult to turn | Binding or stiffness due to knob deformation or debris |
Compatibility
PowrLiner part 0290349 is compatible with the following PowrLiner airless sprayers. Always confirm fitment using the correct parts diagram for your exact model and revision.
| PowrLiner Model | Component |
|---|---|
| PowrLiner 3500 72v | Knob assembly |
| PowrLiner 3500 | Knob assembly |
| PowrLiner 3500s | Knob assembly |
| PowrLiner 4500 | Knob assembly |
| PowrLiner 5500 | Knob assembly |
| PowrLiner 4950 | Knob assembly |
| PowrLiner 6955 | Knob assembly |
| PowrLiner 8950 | Knob assembly |
Related parts commonly serviced together
When replacing the knob, inspect these associated components for wear or damage.
The shaft that the knob attaches to; check for damage or corrosion.
If the knob has markings, ensure the panel markings are legible.
Set screws or nuts that secure the knob; replace if missing or stripped.
Frequently Asked Questions
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