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Tillotson 233-717P HW Captured Needle, Seat & Gasket Kit
233-717P Tillotson HW Needle & Seat Kit
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Tillotson 233-717P HW Captured Needle, Seat & Gasket Kit

Part Number: 233-717P
Online Price: $19.45
Tillotson 233-717P Captured Needle, Seat & Gasket Kit
Availability: In Stock.

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Description

Tillotson 233-717P Captured Needle, Seat & Gasket Kit – 2.25mm for HW Carburetors


The Tillotson 233-717P Needle, Seat, and Gasket Kit is a genuine OEM replacement kit designed for Tillotson HW-series carburetors, specifically tuned for gas-powered 2-cycle racing engines. It features a 2.25mm short inlet seat, a captured fuel needle, and a copper seat gasket for proper sealing and precision fuel delivery.


This kit is ideal for carburetors where the fuel inlet faces downward or where maintaining contact between the needle and fulcrum arm is critical for consistent performance.


Kit Includes:

  • 2.25mm Short Inlet Seat (13.5mm length)
  • Captured Fuel Inlet Needle
  • 16B-199 Copper Seat Gasket


Key Features:

  • OEM-quality kit for Tillotson HW-series carburetors
  • Captured needle design maintains consistent fulcrum contact
  • Ideal for gas-fueled 2-cycle engines and rough track use
  • Commonly used on HW-10A, HW-15A, HC103A, and similar models
  • Provides stable fuel control across all RPM ranges


Installation Tips:

Before installing, measure the existing seat orifice and length to ensure correct fitment—especially on modified, blueprinted, or rebuilt carburetors. The wrong seat size can drastically impact fuel flow and engine performance.


Compatibility:

Fits a variety of HW-series Tillotson carburetors including (but not limited to):

  • HW-10A
  • HW-15A
  • HC103A

Always refer to your carburetor manual or parts diagram to verify fitment before purchase.

FAQ

Q1: What does "captured needle" mean?
A: It means the needle has a dowel that the fulcrum arm holds securely, maintaining constant contact for consistent fuel regulation.


Q2: What’s the seat orifice size in this kit?
A: This kit includes a 2.25mm seat with a 13.5mm overall length—commonly used in Tillotson HW-series gas carburetors.


Q3: Will this fit all HW carburetors?
A: It fits many, including HW-10A, HW-15A, and HC103A, but always check your carburetor manual or parts list before purchasing.


Q4: Why is using OEM needle and seat kits important?
A: Aftermarket kits often have poor sealing, causing flooding or erratic idle. OEM kits like this one ensure durability, proper sealing, and consistent pop-off pressure.

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