3884997R6 Pool Cleaner Replacement Pulley Gears 4 Pack Guide Wheels with 2 Pulley Gears Compatible with Dolphin and Nautilus CC Plus models M200, M400, M500, Dx3, Dx4, Dx6 Why you need this kit Restores smooth movement and reliable drive engagement for your robotic pool cleaner when original guide wheels or pulley gears are worn or damaged. Prevents downtime and costly service calls by providing an exactfit replacement set designed for the listed models. Keeps cleaning performance consistent so your pool stays debris and your robot operates quietly and efficiently. Key benefits at a glance Direct replacement fit: Intended specifically for the listed model families for predictable, secure installation and correct alignment. Restores traction and rotation: Replaces worn guide wheels and pulley gears that cause slipping, irregular movement, or stalled operation. Durable construction: Built from wearresistant materials suited to the pool environment to deliver reliable performance over repeated cycles. Simple to : Designed for easy swapin installation so routine maintenance can be completed quickly without professional service. Features and performance Included parts: 4 guide wheels plus 2 pulley gears packaged as a complete maintenance kit to address the most common wear points. Function: Guide wheels stabilize and guide the cleaner along pool surfaces while pulley gears transfer motor power to the drive system. Fit and sizing: Manufactured to the same dimensions and tolerances as the original components for secure mounting and correct clearance. Operational benefits: Reduces slippage, improves directional control, and helps the cleaner to cleaning cycles. Practical use scenarios Seasonal tuneup: worn wheels and pulley gears at the start of pool season to ensure reliable performance throughout months of heavy use. After partial failure: Install this kit when the cleaner shows signs of reduced mobility, jerky movement, or frequent stalls. Preventive maintenance: Keep a spare set on hand for quick repairs during extended cleaning schedules or when secondhand or older units show wear. What to expect A matched set of replacement components engineered to reinstate the intended motion and durability of the cleaning system for the listed models. Straightforward installation and immediate improvement in traction and handling when original parts are degraded. This replacement kit provides a practical, modelspecific solution to restore your robotic pool cleaner to consistent, predictable operation.