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SKU:
NLT1C02185
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Carburetor Rebuild Kit RK21-HU for Tecumseh TC200 TC300
$22.99
In Stock
$22.99
Sale price
$22.99
Regular price
This aftermarket carburetor diaphragm and gasket rebuild kit cross-references Tillotson RK21-HU for compatible Tecumseh TC200 and TC300 engine carburetors.
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Compatible Models
We do our best to list all compatible models. Although this may be the part you need, your exact model may not appear below.
Compatible equipment / model
- Tecumseh TC200 engine with matching Tillotson carburetor
- Tecumseh TC300 engine with matching Tillotson carburetor
Product Overview
A small two-cycle engine that will not prime, runs only on choke, leaks fuel, or has a stiff metering diaphragm may not need a complete carburetor. When the body and throttle shaft are still usable, fresh diaphragms, gaskets, and service parts can restore fuel control.
This kit is for the Tillotson-style carburetor layout used on select TC200 and TC300 engines. Engine model alone is not enough: compare the existing carburetor model, cover pattern, needle parts, diaphragm shape, and RK21-HU contents with the pieces shown.
Key Features & Performance
- Rebuild parts for compatible diaphragm carburetors
- Cross-references Tillotson RK21-HU
- Application for select Tecumseh TC200 and TC300 engines
- Refreshes aged gaskets and flexible metering components
- Economical repair when the original carburetor body is sound
Replaces Part Numbers
- RK21-HU
- RK21HU
Common Uses
- Repairing hard starting from a stiff fuel diaphragm
- Stopping leaks caused by hardened gaskets
- Restoring metering after old fuel damages soft parts
- Rebuilding an original carburetor with good castings and shafts
Technical Specifications
- Product Type: Carburetor rebuild / diaphragm kit
- Carburetor Family: Compatible Tillotson HU-series layout
- Engine Application: Tecumseh TC200 / TC300
- Condition: New aftermarket service parts
Installation & Fitment
- Identify the carburetor model before opening it
- Work over a clean tray and note gasket and diaphragm order
- Clean passages with carburetor-safe methods; do not enlarge jets
- Set lever height and needle components to the correct carburetor specification
- Pressure-test for leaks and tune only after the engine is warm
Compatibility Notice
Northline Parts does its best to list all known compatible models. The correct part may fit an application that is not shown above. Model year, production date, serial number, engine or equipment specification, installed options, and previous repairs can change fitment. Match the original part, reference number, dimensions, connectors, mounting points, and the product photos before purchase.
Frequently Asked Questions
Q: Does this include a complete carburetor? A: No. It is a rebuild kit for the existing compatible carburetor.
Q: Why does diaphragm order matter? A: The pump and metering sides use specific gasket-and-diaphragm stacking that affects operation.
Q: Will it fit every TC200 or TC300? A: No. Confirm the carburetor model and compare the RK21-HU parts.
Q: Is this an original-equipment part? A: No. This is a new aftermarket product. Brand names and part numbers are used only to identify compatible applications.
Part Summary
keywords: RK21-HU carburetor rebuild kit, Tecumseh TC200 diaphragm kit, TC300 carb gasket repair, Tillotson HU carburetor service parts, small engine primer fuel leak repair
Brand names, model numbers, and reference part numbers are used for identification and compatibility purposes only. Verify the original component, specifications, and application before purchase.