The Kyosho LA427-76 spur gear is an RC replacement part listed as 48P with 76 teeth and fits LAZER ZX7.5 compatible configurations. The text emphasises compatibility, the role in the drivetrain and practical notes for correct installation without asserting unverified specifications.
A 76-tooth spur adjusts the gear ratio and mesh character. During installation, confirm pinion-to-spur engagement and axial alignment to minimise abnormal wear; accurate mesh and secure fastening are key to keeping noise and inefficiency low.
Replacement checklist: confirm the shaft and pinion are 48-pitch compatible, ensure the gearbox still provides proper bearing support, and check the housing and shims that set mesh. Small changes to mesh or shim thickness will predictably alter acceleration and top speed characteristics.
Care recommendations: inspect teeth for chips or uneven wear, keep the gear faces clear of grit, and verify any set screws or fastening methods are tightened to suit your chassis to prevent slippage under load.
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