Briggs & Stratton Powerlink On-Board Generator System - Manual (Page 2)

These labels warn of potential hazards that can result in death or serious injury.
Read and understand them before operating the equipment.
WARNING
An Authorized Service Dealer should perform all service.
Improper maintenance or repair could result in death,
serious injury and/or property damage.
Do not perform any maintenance on the POWERLINK 
On-Board Generator System with the engine running. Stop
the engine and remove the spark plug wires from the spark
plugs.
Do not perform any modifications to the POWERLINK

On-Board Generator System, the inverter, or the GFCI
receptacle.
Do not remove cover on the GFCI receptacle.
The GFCI receptacle must be serviced with original factory
approved GFCI receptacle, and which conforms to N.E.C.
requirements. See listing under Service and Maintenance.
Never tamper with engine governed speed.
WARNING
Improper operation could result in death, serious injury and/or
property damage.
Never use unit as a backup alternative for a main power source.
GFCI receptacle will not protect you against:
• Line-to-line shocks (like the kind you get by touching
metal in both straight slots of a receptacle)
• Current overloads
• Line-to-line short circuits
Never connect the POWERLINK  On-Board Generator
System to the electrical system of a building. Doing so could
cause a power back feed that may electrocute utility workers or
others who come in contact with the line.
Never operate without the factory installed GFCI receptacle.