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This N021 gear kit is designed for Raymarine linear and rotary actuators (Type 1 and Type 2).

You should consider replacing the gears if you notice one or more of the following signs on your autopilot:

Excessive or unusual mechanical noise (grinding, clunking) during operation.Significant play in the drive system, resulting in sluggish rudder response.The autopilot motor runs but the ram does not move or moves jerkily.

Installing this kit requires a certain level of technical skill. It involves partially disassembling the autopilot's housing to access the internal mechanism. A person comfortable with small mechanical work can perform the procedure.

No, kit N021 is not compatible with any ST1000 or ST2000 models. It is designed for Type 1 and Type 2 mechanical linear and rotary actuators. The gear kit for ST1000 and ST2000 pilots is reference Q054.

The N021 kit is a complete solution for overhauling the transmission. It includes all the pinions and gears required to replace the internal mechanism of your Raymarine linear and rotary actuators.

Yes, it is essential to lubricate the new gears with a high-quality marine grease during installation. This ensures smooth operation, reduces wear and protects parts from corrosion. The grease is not included in the kit.

Yes, absolutely. The N021 gear kit is an official spare part manufactured by Raymarine. Using an original part ensures a perfect fit, compliance with tolerances, and restoration of your autopilot's original performance.

No, this kit is a Raymarine-specific part designed for Raymarine linear and rotary actuators (Type 1 and Type 2). The gear dimensions and design will not match actuators from other brands.

Yes, it is strongly recommended to replace all the gears supplied in the kit. Gears wear as a set. Replacing only one gear could lead to premature wear of the new gear and poor transmission performance.

To confirm compatibility, you must check the exact model of your autopilot. The model name, such as Type 1 or Type 2 cylinders, is usually printed directly on the device's housing.

Yes. Worn gears create play in the drive, reducing the autopilot’s responsiveness and accuracy. Installing this new kit eliminates this play and restores the original steering precision and responsiveness of your unit.

Generally, basic tools are sufficient for this operation. Have a set of precision screwdrivers (Phillips and flathead) and possibly small pliers on hand. No proprietary Raymarine tools are normally required for this repair.

Kit N021 is not compatible with ST1000+ and ST2000+ models; it is designed for Raymarine linear actuators. ST1000+ and ST2000+ autopilots use a different gear kit (reference Q054).

The main advantage is economic and sustainable. This kit significantly extends the lifespan of your autopilot for a fraction of the cost of a full power unit replacement.

Yes, the most important precaution is to ensure that the autopilot is completely disconnected from any electrical power source before starting to disassemble it. This prevents any risk of short-circuit or accidental activation.

No, this kit is specifically designed for the internal mechanisms of tiller pilots (actuators). It is absolutely not compatible with wheel pilot systems, which use power units and transmissions that are entirely different.

No, as a spare part, this kit contains only the gears. It does not come with a paper installation manual. The replacement procedure is detailed in the official service manuals for the relevant autopilots.

Yes, in most cases. If your autopilot’s noise is a mechanical squeak or clack coming from the drive, replacing the worn gears with this new kit should effectively eliminate the noise.

The total weight of the N021 gear kit is approximately 0.2 kg (200 grams).

No, this kit is reserved for ST1000+ and ST2000+ models. Evolution series autopilots, such as the EV-100, use different internal components and this gear kit is not compatible with them.