Product Description

The Kirby foot wheel ratchet lock spring (Star KB90B) is a genuine OEM replacement part for the height adjustment mechanism found on Kirby G-Series direct-sale vacuums. This small but critical spring component maintains tension on the foot wheel ratchet, allowing smooth and secure height adjustments between carpet and bare floor settings.

Constructed from durable spring steel, this part is engineered to withstand repeated ratcheting cycles without loss of tension or function. The Star KB90B is a direct replacement for worn or damaged springs in the foot wheel assembly.

Kirby G-Series Compatibility: G4, G5, G6, G7, Sentria I, Sentria II, Avalir I, Avalir II. Most G-Series attachments and parts are cross-compatible across these models, making this a versatile replacement component.

Swiss Boy Vacuum is an authorized Kirby dealer serving the Wasatch Front since 1963. We stock genuine OEM Kirby parts and offer expert service and installation. Contact us at 801-298-3656 for assistance with your Kirby vacuum.

Why Choose This Product?

• Genuine OEM Kirby part — Star KB90B — ensures proper fit and function
• Compatible with all Kirby G-Series models: G4, G5, G6, G7, Sentria I & II, Avalir I & II
• Spring steel construction designed for repeated use cycles
• Restores smooth ratcheting action to foot wheel height adjustment
• Quick replacement — fits directly into existing foot wheel assembly
• Authorized Kirby dealer with 60+ years of vacuum expertise

Specifications

• Brand: Kirby
• Part Number: Star KB90B
• Component: Foot wheel ratchet lock spring
• Material: Spring steel
• Application: Height adjustment mechanism

Compatibility

• Kirby G-Series Models: G4, G5, G6, G7, Sentria I, Sentria II, Avalir I, Avalir II

Use Case

If your Kirby vacuum's foot wheel height adjustment feels loose, sticks, or doesn't hold position between carpet and bare floor settings, a worn ratchet lock spring is often the culprit. This replacement spring restores tension and precise height control, ensuring optimal performance on all floor types. Kirby owners performing regular maintenance or professional vacuum technicians will appreciate having this OEM part on hand for quick repairs.