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Elements and Performance Criteria

1. Prepare to service and repair EMS
   • Job requirements are determined from workplace instructions
   • Service and repair procedures and information are sourced and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and materials are selected and checked for serviceability
2. Determine service and repair requirements of EMS
   • System is inspected and tested according to manufacturer specifications, workplace procedures, and safety requirements
   • Faults are identified from inspection and causes of faults are determined
   • Inspection findings and test results are reported according to workplace procedures, and include recommendations for necessary service, repair or adjustment
   • Authorisation to proceed with service and repair is obtained according to workplace procedures
3. Carry out service and repair activities
   • Service and repair options are analysed and those most appropriate to the circumstances are selected
   • Tools, equipment and materials are selected and checked
   • Components are removed and inspected for serviceability according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Reusable, repaired and replacement components are fitted and adjusted according to manufacturer specifications and workplace procedures
4. Check EMS for normal operation
   • System is operated and compared to manufacturer specifications according to workplace procedures and safety requirements
   • Adjustments are made as required and EMS is re-tested
5. Complete work processes
   • Final inspection is made to ensure work is to workplace expectations and equipment is presented ready for use, including protective guards, cowlings and safety features
   • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
   • Tools and equipment are checked and stored according to workplace procedures
   • Workplace documentation is processed according to workplace procedures
6. Prepare to service and repair EMS
   • Job requirements are determined from workplace instructions
   • Service and repair procedures and information are sourced and interpreted
   • Hazards associated with the work are identified and risks are managed
   • Tools, equipment and materials are selected and checked for serviceability
7. Determine service and repair requirements of EMS
   • System is inspected and tested according to manufacturer specifications, workplace procedures, and safety requirements
   • Faults are identified from inspection and causes of faults are determined
   • Inspection findings and test results are reported according to workplace procedures, and include recommendations for necessary service, repair or adjustment
   • Authorisation to proceed with service and repair is obtained according to workplace procedures
8. Carry out service and repair activities
   • Service and repair options are analysed and those most appropriate to the circumstances are selected
   • Tools, equipment and materials are selected and checked
   • Components are removed and inspected for serviceability according to manufacturer specifications, workplace procedures, and safety and environmental requirements
   • Reusable, repaired and replacement components are fitted and adjusted according to manufacturer specifications and workplace procedures
9. Check EMS for normal operation
   • System is operated and compared to manufacturer specifications according to workplace procedures and safety requirements
   • Adjustments are made as required and EMS is re-tested
10. Complete work processes
    • Final inspection is made to ensure work is to workplace expectations and equipment is presented ready for use, including protective guards, cowlings and safety features
    • Work area is cleaned, waste and non-recyclable materials are disposed of, and recyclable material is collected
    • Tools and equipment are checked and stored according to workplace procedures
    • Workplace documentation is processed according to workplace procedures

Range Statement

This section specifies work environments and conditions that may affect performance. Essential operating conditions that may be present (depending on the work situation, needs of the candidate, accessibility of the item, and local industry and regional contexts) are included. Bold italicised wording, if used in the performance criteria, is detailed below.

Service and repair procedures must include:	inspecting, servicing, repairing and replacing components performing diagnostic routines reading and resetting error codes testing repaired units documenting and reporting service and repair procedures.
Safety requirements must include:	work health and safety (WHS) and occupational health and safety (OHS) requirements, including procedures for: selecting and using personal protective equipment (PPE) working with electrical systems operating engines safely.
Environmental requirements must include:	procedures for trapping, storing and disposing of fuel released from the EMS.

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Performance Evidence

Before competency can be determined, individuals must demonstrate they can perform the following according to the standards defined in this unit’s elements, performance criteria, range of conditions and foundation skills:

use diagnostic tools to perform checks on two different outdoor power equipment engine management systems (EMS), in which the work must involve validating error codes and downloading EMS software

service and repair the above two outdoor power equipment EMS, in which the work must involve the following components:

fuel injection pump

fuel injector or carburettor

spark plug

ignition coil pack

generator or compensator

electronic control unit

sensors, including:

crankshaft angle

engine speed sensor

crankcase temperature and pressure sensor

emission control systems

on two occasions carry out EMS diagnosis, calibration and adjustment using relevant manufacturer engine diagnosis device.

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Knowledge Evidence

Individuals must be able to demonstrate knowledge of:

work health and safety (WHS) and occupational health and safety (OHS) requirements relating to servicing and repairing engine management systems, including procedures for:

selecting and using personal protective equipment (PPE)

working with electrical systems

operating engines safely

environmental requirements, including procedures for trapping, storing and disposing of fuel released from the EMS

operating principles of outdoor power equipment EMS, including:

air fuel ratios and chemistry of combustion

composition of petrol fuel, including octane rating

open and closed loop injection

engine emissions

application, purpose and operation of EMS components, including:

fuel system components:

fuel injection pump

fuel injector

tank, cap and lines

electronic control system components:

electronic control unit

throttle position sensor

generator

crankshaft angle and engine speed

crankcase air temperature and pressure sensor

manifold absolute pressure (MAP) sensor

oxygen sensor

ignition system, including:

spark plug

high tension lead

coil

engine emission control system, including:

emission standards

engine emission design technology

evaporative

exhaust

crankcase

identification, selection and operation of EMS diagnostic tools relevant to the engine brand and system type

procedures for system data retrieval in order to determine usage of product, fuel quality values, system parameters and service history

service and repair procedures available from EMS manufacturer manuals, including removal, replacement, calibration and adjustment procedures for EMS, including:

fuel system

ignition system

electronic control system

emission control system

post-repair testing procedures for EMS, including:

operating engine system through full operating range

verify manufacturer specifications

performance benchmarking product against specifications.

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