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EC Tillotson Gasoline Service Kit
701 EC Tillotson Gasoline Service Tool Kit
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EC Tillotson Gasoline Service Kit

Part Number: 701-K
Online Price: $78.23
701-K EC Tillotson Gas Service Kit – Complete Carburetor Tuning & Rebuild Tools for Gasoline Engines
Availability: Out of Stock.

Description

701-K EC Tillotson Gas Service Kit – Complete Carburetor Tuning & Rebuild Tool Set for Gasoline Engines


The 701-K EC Tillotson Gas Service Kit provides all the essential tools you need to rebuild, tune, and maintain gasoline-powered Tillotson carburetors. Whether you're a kart racer, small engine builder, or weekend tuner, this kit ensures precise calibration and reliable fuel delivery—critical for achieving consistent engine performance.


Specifically engineered for gasoline (not methanol) setups, this kit is perfect for stock and performance Tillotson carburetors used in racing or recreational applications.


What’s Included in the 701-K EC Gas Service Kit:

POPG-1 Pop-Off Pressure Gauge (0–15 PSI)

This tool allows you to accurately measure pop-off pressure and detect internal leaks, which can drastically affect tuning and throttle response.
Note: Pop-off pressure controls fuel volume at low speeds—not fuel pressure. Gas-powered carbs typically require higher pop-off pressure than methanol versions.


705-G EC Fulcrum Arm Height Gauge (Tillotson)

Used to set the fulcrum arm height, which determines how much the metering diaphragm can push on the fuel inlet needle. This directly affects how much fuel flows to the low and high-speed circuits. Our blueprinted gas carburetors use the .075" side of the gauge.
Slight changes in arm height can also alter pop-off pressure and spring tension—precision is key.


718-D Alignment Dowel Pin (.125" x 2")

For use with older Tillotson carburetors that do not self-align the copper seat gasket. Ensures perfect alignment during seat installation when paired with the 36A-38M.


36A-38M Machined Inlet Seat (Short – Alignment Tool Only)

This is a non-functioning, machined fuel seat used strictly for aligning copper inlet seat gaskets using the 718-D dowel pin.
Warning: Do not use this seat in a running engine—it will cause flooding as the inlet needle cannot seal properly.


711-M Machined Inlet Seat Socket Tool

Custom-machined to fit the Tillotson inlet seat precisely. This tool prevents damage during seat removal and installation, which is otherwise difficult with standard sockets or pliers.


Benefits:

  • Tailored specifically for gasoline Tillotson carburetors
  • Ensures accurate tuning and leak-free performance
  • Helps prevent costly damage during carburetor service
  • Essential for serious racers, engine builders, and tuners

FAQ

Q1: What is included in the 701-K EC Tillotson Gas Service Kit?

A: The kit includes a POPG-1 Pop-Off Pressure Gauge, 705-G Fulcrum Arm Height Gauge, 718-D Alignment Dowel Pin, 36A-38M Machined Inlet Seat (alignment tool only), and the 711-M Machined Inlet Seat Socket Tool.


Q2: Is this kit suitable for methanol carburetors?
A: No, the 701-K is specifically designed for gasoline-powered Tillotson carburetors and may not be suitable for methanol or alky carburetors, which require different settings.


Q3: What does the pop-off pressure gauge measure?
A: It measures the pop-off pressure, which controls fuel volume at low speeds and helps identify leaks that can affect carburetor tuning and performance.


Q4: How does the fulcrum arm height gauge help in tuning?
A: It sets the fulcrum arm height, which controls how much the metering diaphragm pushes on the fuel inlet needle, regulating fuel flow to the carburetor’s circuits for optimal performance.


Q5: Can the 36A-38M Inlet Seat be used in a running carburetor?
A: No, the 36A-38M is an alignment tool only and not a functioning fuel seat. Using it in a running carburetor will cause flooding and improper fuel flow.


Q6: Why is the 711-M Machined Inlet Seat Socket important?
A: It allows for safe removal and installation of the Tillotson inlet seat without damaging the carburetor body or the seat, which can be difficult with standard tools.

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