SERVICING INSTRUCTIONS

REPLACING PARTS

9

B

AR0943

4.2• Replace with a new ignition lead following the same route as the old one

• Replace the valve cover and the pilot assembly

4.3• Check operation of the new ignition lead

5. PIEZO

5.1The piezo assembly used on this appliance is not serviceable and is unlikely to fail.

5.2If a new piezo is required, you must change the gas valve. Refer to Section 6.

6.GAS VALVE

6.1• Turn off the gas supply at the isolation device

•Disconnect the 2 x 8mm and 1 x 4mm gas pipe fittings at the back of the gas valve

•Disconnect the thermocouple, Diagram 10

10B

C

C

A AR0943

•Undo the single screw that secures the left-hand side of the control cover, Diagram 11

11

AR0915

To release the right side of the control cover:

•Insert the narrow blade screwdriver into the slot shown in Diagram 12

•Lever it gently and pull from the right side at the same time to remove the cover

There is a small cylindrical metal spacer inside the cover. This must be kept and replaced on the fixing screw during re-assembly.

12

AR0916

Note the existing route of the ignition lead

•Disconect the ignition lead from the valve body

6.3• Disconnect the ignition lead from the gas valve

•Undo the two bolts securing the gas valve to the stove and remove the valve

6.4• Replace in reverse order

•Check all joints for gas leaks

•Check operation of the thermocouple and ignition lead

7.MAGNETIC SAFETY VALVE

7.1• Turn off the gas supply at the isolation device

•Undo the thermocouple connection from the back of the gas valve

•Pull the sensor leads clear and remove the interrupter block

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Yeoman 8455, 8456 manual Piezo, GAS Valve, Magnetic Safety Valve
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8456, 8455 specifications

The Yeoman 8455 and 8456 are significant advancements in the field of agricultural machinery, specifically designed to enhance productivity and efficiency for modern farming operations. These models exemplify innovation, boasting a range of features and technologies tailored to meet the diverse needs of farmers.

One of the main features of the Yeoman 8455 and 8456 is the robust construction, ensuring durability and longevity in various farming conditions. These machines are engineered with high-quality materials that withstand heavy use, reducing maintenance costs and downtime. The design also incorporates a user-friendly interface, making it accessible for operators with different levels of experience.

In terms of technology, the Yeoman series offers precision agriculture capabilities. Equipped with advanced GPS and mapping systems, these machines allow farmers to optimize their fieldwork by providing highly accurate planting and harvesting patterns. This technology not only improves yield but also contributes to sustainable farming practices by minimizing waste and maximizing efficiency.

The Yeoman 8455 and 8456 feature powerful engines that produce high torque, enabling them to perform well in challenging terrains. This strength is complemented by an advanced hydraulic system, facilitating smoother operation and better control over attachments and implements. Farmers can easily attach various tools, such as plows, seeders, and cultivators, enhancing the versatility of these models.

Another critical characteristic of the Yeoman 8455 and 8456 is their exceptional fuel efficiency. These models are designed to consume less fuel without compromising performance, which is especially important in today’s economy. The integration of eco-friendly technologies also helps reduce the environmental impact of farming operations, aligning with the global push towards sustainability.

Additionally, the comfort and ergonomics of the operator cabin are significant selling points. Both models are equipped with adjustable seating, climate control, and intuitive control panels, ensuring that operators can work for extended periods with minimal fatigue. Furthermore, enhanced visibility from the cabin allows for safer operation, particularly in crowded or intricate field settings.

In conclusion, the Yeoman 8455 and 8456 stand out as exemplary pieces of equipment in the agricultural industry. Their combination of robust construction, advanced technology, fuel efficiency, and operator comfort positions them as valuable assets for modern farmers looking to improve their productivity and sustainability in an increasingly competitive market.
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