91354-ZW4-H11 Honda O-RING (Honda Code 7558620).

Introduction
Do not perform any procedure in this Special Instruction until you have read the information and you understand the information.Reference
Reference: Tool Operating Manual, NEHS0776, "Using the Cat 179-0710 Burn Rate Fuel Flow Measurement System"Safety Section
Do not perform any procedure in this Special Instruction until you have read this Special Instruction and you understand this information. Use only proper tools and observe all precautions that pertain to the use of those tools. Failure to follow these procedures can result in personal injury. The following procedures should be observed.Work safely. Most accidents that involve product operation, maintenance, and repair are caused by failure to observe basic safety rules or precautions. An accident can often be avoided by recognizing potentially hazardous situations before an accident occurs.A person must be alert to potential hazards. This person must also have the necessary training, skills, and tools to perform these functions properly.Safety precautions and warnings are provided in this instruction and on the product. If these hazard warnings are not heeded, bodily injury or death could occur to you or to other persons. Caterpillar cannot anticipate every possible circumstance of a potential hazard.Therefore, the warnings in this publication and the warnings that are on the product are not all inclusive. Avoid using a tool, a procedure, a work method, or operating technique that is not recommended by Caterpillar.Ensure that the product will not be damaged or the product will be made unsafe by the operation, lubrication, maintenance, or the repair procedures.
Do not operate or work on this product unless you have read and understood the instruction and warnings in the relevant Operation and Maintenance Manuals and relevant service literature. Failure to follow the instructions or heed the warnings could result in injury or death. Proper care is your responsibility.
Failure to follow all safety guidelines prescribed in this document and by governing authorities and regulatory agencies may result in severe injury or death of personnel or machine damage.
Personal injury or death can result from improper maintenance procedures. To avoid injury or death, follow the procedures exactly as stated below.
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Personal injury can result from improper handling of chemicals.Make sure you use all the necessary protective equipment required to do the job.Make sure that you read and understand all directions and hazards described on the labels and material safety data sheet of any chemical that is used.Observe all safety precautions recommended by the chemical manufacturer for handling, storage, and disposal of chemicals.
Hazardous Voltage Information
ELECTROCUTION HAZARD - The electrical system contains hazardous voltage levels.DO NOT remove any covers that will expose energized hazardous-voltage electrical components without shutting down and discharging the electrical system.DO NOT perform any maintenance on the electrical system until after the electrical system has been shut down and the voltage has been discharged by qualified personnel.Read and understand the instructions and warnings found in the Operation and Maintenance Manual to properly shut down the electrical system and discharge hazardous-voltage electrical components.Failure to follow these instructions could result in personal injury or death.
ELECTROCUTION HAZARD - Ensure proper grounding.Avoid a buildup of hazardous live voltages on exposed surfaces by ensuring that all grounding wires/straps are always properly connected.Disconnected grounding wires, including grounding wires/straps for hazardous-voltage components and electrical enclosures, must be properly reconnected before connecting equipment to the power supply.Failure to follow these instructions could result in personal injury or death.
When service or maintenance must be performed in a hazardous-voltage component enclosure, always assume that a hazardous level of voltage could be present.Qualified personnel should manually check for hazardous-voltage using electrical measuring tools that have the capacity to measure the hazardous-voltage components being checked.The level of voltage present must be confirmed to be below 50 Volts before any exposure to the hazardous-voltage components can take place.Failure to follow these instructions could result in personal injury or death.
There may be government regulations, local regulations, or site-specific rules that govern the operation, service, and maintenance of high-voltage components and machines. Comply with applicable rules and regulations for the work place.Appropriate high-voltage protective equipment should be worn as defined by local rules and regulations.Only qualified service personnel should perform service on high-voltage systems.DO NOT remove covers, or open enclosures, that will expose energized high-voltage electrical components.DO NOT perform service or maintenance on energized high-voltage electrical components.High voltage can cause electrocution resulting in personal injury or death.High-voltage components and connections must be properly maintained.Refer to the Maintenance Section in the Operation and Maintenance Manual for additional information.Residual energy can remain in high-voltage components even after operation has stopped. Always assume that a hazardous level of voltage could be present.Before performing any type of service, repair, or maintenance on high-voltage electrical components, perform the following:
Disconnect the electrical power source
Isolate electrical components
Discharge residual energy
Check components for voltage using electrical measuring tools.Note: Use electrical measuring tools that have the capacity to measure the high-voltage components being checked. The level of voltage present must be confirmed to be below 50 Volts before any exposure to the high-voltage components can take place.Read and understand the instructions and warnings found in Operation and Maintenance Manual, "Electrical Shutdown and Voltage Discharge" , to shut down the electrical system and discharge high-voltage electrical components.