Description
Overview:
This non-genuine replacement key is designed for Hatz single-cylinder diesel engines and directly replaces OEM part number 50404900. Made from durable, hardened steel with a semi-circular (half‐moon) profile, it functions as a precise woodruff key to locate and secure the flywheel or drive component on the crankshaft. By maintaining correct alignment, it helps preserve ignition timing and reliable starting performance. Suitable for Hatz 1B20 and 1B30 engines commonly used in compactors, generators, pumps, mixers, and other site and garden machinery, this key offers a practical, cost-effective alternative to the original part. Its robust build resists wear and shear under normal operating loads, supporting smooth running and consistent operation in everyday use.
Key Features:
- Non-genuine part that replaces Hatz 50404900 for cost-effective maintenance
- Hardened steel construction for strength and long service life
- Semi-circular woodruff design for accurate crankshaft/flywheel location
- Helps maintain ignition timing for reliable starting and smooth running
- Compatible fit for Hatz 1B20 and 1B30 engines
- Simple to install during flywheel or rotor service with basic workshop tools
- Suitable for frequent stop/start and site conditions
- Reliable alternative when an original key is worn, damaged, or sheared
Typical Applications:
Used to secure and align the flywheel, magneto/rotor, or starter cup on Hatz 1B20 and 1B30 engines found in plate compactors, site generators, pumps, concrete mixers, lawn and garden machinery, and similar equipment. Ideal for engine rebuilds, routine servicing, or repairs after impact or overload that may shear the original key.
Also known as:
Woodruff key, flywheel key, half-moon key, crankshaft key, timing key, rotor key, engine alignment key, replacement crank key.
Fits Models:
1B20, 1B30
Alternate Part Numbers:
50404900
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