Overview
Engineered as a direct-fit replacement, this gear housing assembly restores the drivetrain connection between the trimmer shaft and the cutting attachment. Gearbox failure is typically caused by insufficient lubrication, impact damage, or normal wear on the bevel gears inside. A fresh assembly comes pre-greased and ready for installation.
Key specifications
- Replacement gear head/gearbox assembly
- Includes housing, bevel gears, and bearings
- Pre-lubricated for immediate installation
- Direct-fit OEM-equivalent design
- Hardened steel gears for long service life
Compatibility
This gear assembly is designed for RIDGID trimmers and brush cutters as specified above. Verify the shaft diameter, thread direction, and mounting style before ordering.
Installation notes
Disconnect power before servicing. Remove the cutting attachment from the old gear head, then unbolt the gearbox from the shaft housing. Slide the new assembly into position, ensuring the inner drive shaft engages the bevel gear properly. Tighten all fasteners and check for smooth rotation before use.
Common questions
Q: Will this 308053004 head gear box fit my RIDGID R01201B trimmer, or is it only for the R01201?
Yes, this drive gear box is listed as compatible with both the RIDGID R01201 and R01201B. It is also made to fit the HART HLST02LB/HLST02LBVNM and Ryobi RY254BC, RY254BCVNM, and RYBRC77, so if your model number matches one of those exactly, it should be the correct head gear assembly.
Q: I’m replacing the gear head on a Ryobi RY254BCVNM—do I need to grease this 308053004 gear box during installation?
It’s a good idea to inspect the gear box for adequate grease before installing, especially if your old head failed from heat or grinding. Adding the proper gear lubricant and checking it periodically can help reduce wear on the internal gears and keep the trimmer head running smoothly.
Q: My HART HLST02LBVNM brush head is making a clicking noise and the trimmer line head wobbles—could this 308053004 gear box fix that?
Yes, those are common signs of a worn or damaged head gear box, especially if the output shaft or internal gears have developed play. If the drive shaft is still in good condition and the wobble is coming from the gear head itself, replacing the 308053004 assembly is often the correct repair.
