24189 version 1

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Demonstrate knowledge of motorcycle carburettors, and diagnosing fuel system faults and their causes

Level / 3
Credits / 2

PurposeThis unit standardis for people in the motorcycle repair industry. People credited with this unit standard are able to demonstrate knowledge of motorcycle carburettors, and diagnosing fuel system faults and their causes.

Subfield / Motor Industry
Domain / Automotive Fuel Systems and Exhaust
Status / Registered
Status date / 25 January 2008
Date version published / 25 January 2008
Planned review date / 31 December 2012
Entry information / Open.
Replacement information / This unit standard and unit standard 24190 replaced unit standard 962.
Accreditation / Evaluation of documentation and visit by NZQA and industry.
Standard setting body (SSB) / NZ Motor Industry Training Organisation (Incorporated)
Accreditation and Moderation Action Plan (AMAP) reference / 0014

This AMAP can be accessed at

Special notes

Definition

Service information may include but is not limited to – technical information of a vehicle, machine, or product detailing operation; installation and servicing procedures; manufacturer instructions and specifications; technical terms and descriptions; and detailed illustrations. This can be accessed in hard copy or electronic format and is normally sourced from the manufacturer.

Elements and performance criteria

Element 1

Demonstrate knowledge of motorcycle carburettors.

Rangeincludes but is not limited to – piston/slide, constant velocity, and fixed venturi types.

Performance criteria

1.1The terms constant velocity (CV) carburettor and fixed venturi carburettor are defined, and the differences between CV and piston/slide carburettors are described in accordance with service information.

1.2The functions of the various systems in a carburettor, with and without automatic choke, is determined in accordance with service information.

Rangeidle, progression, cruising, acceleration, power, cold start, carburettor heating.

1.3The need for synchronisation of multiple carburettors is explained in accordance with service information.

Element 2

Demonstrate knowledge of diagnosing fuel system faults and their causes.

Performance criteria

2.1Diagnostic procedures are described in accordance with service information.

Rangeincludes but is not limited to – test ride, symptoms, poor performance, poor starting, conditions, leaks, dirt and contamination, adjustment, blockage.

2.2Testing of the carburettor for faults is described in accordance with service information.

Rangepiston valve, constant velocity, and fixed venturi types;

includes but is not limited to – damage, wear, deterioration.

2.3Testing the outlet pressure and flow rate of the fuel pump is described in accordance with service information.

2.4Testing the air intake system is described in accordance with service information.

Rangeincludes but is not limited to – damaged parts, unserviceable parts, loose parts, air leaks, blockages, restrictions.

Please note

Providers must be accredited by NZQA, or an inter-institutional body with delegated authority for quality assurance, before they can report credits from assessment against unit standards or deliver courses of study leading to that assessment.

Industry Training Organisations must be accredited by NZQA before they can register credits from assessment against unit standards.

Accredited providers and Industry Training Organisations assessing against unit standards must engage with the moderation system that applies to those standards.

Accreditation requirements and an outline of the moderation system that applies to this standard are outlined in the Accreditation and Moderation Action Plan (AMAP). The AMAP also includes useful information about special requirements for organisations wishing to develop education and training programmes, such as minimum qualifications for tutors and assessors, and special resource requirements.

Comments on this unit standard

Please contact the NZ Motor Industry Training Organisation (Incorporated) if you wish to suggest changes to the content of this unit standard.

 New Zealand Qualifications Authority 2018