Free Practice Questions for Craftsman Motorcycle Vehicles Maintenance

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Key Facts: Craftsman Motorcycle Vehicles Maintenance Exam

60 items

Official written exam length (CBT)

Q-Net Craftsman exam guidelines

60 minutes

Written test time limit

Q-Net CBT testing procedure

60 / 100

Passing score (36/60 correct)

Q-Net 검정기준 및 방법

KRW 14,500

Written CBT registration fee

Q-Net official fees 2026

KRW 82,000

Practical exam registration fee

Q-Net official fees 2026

2 years

Written pass exemption period

National Technical Qualifications Act Enforcement Decree Article 21

이륜자동차정비기능사 is HRD Korea's 2026 national technical qualification for motorcycle and electric two-wheeler maintenance. The written exam consists of 60 CBT questions in 60 minutes, requiring 60 points or more (at least 36 correct answers) to pass, followed by a hands-on practical test. Official fees are KRW 14,500 for the written exam and KRW 82,000 for the practical exam. OpenExamPrep provides 100 rigorous independent English-language study questions across engine, chassis, electrical, EV, and safety topics.

Sample Craftsman Motorcycle Vehicles Maintenance Practice Questions

Try these sample questions to review concepts for the Craftsman Motorcycle Vehicles Maintenance exam. Each question includes a detailed explanation. Start the interactive quiz above for the full 100+ question experience with AI tutoring.

1In a two-stroke motorcycle engine, what component acts as a one-way check valve between the carburetor and crankcase to prevent fuel-air mixture blowback during piston downstroke?

A.Poppet valve

B.Reed valve (리드 밸브)

C.Rotary disc valve

D.Power valve

Explanation: A reed valve (리드 밸브) is a flexible one-way leaf valve mounted in the intake tract between the carburetor and the crankcase. As the piston rises, crankcase depression draws the air-fuel mixture past the flexed petals; when the piston descends to compress the primary charge (crankcase compression), the reeds snap shut against the valve seat, preventing backflow into the carburetor.

2Which component in a liquid-cooled motorcycle cooling system maintains system pressure above atmospheric to raise the boiling point of the coolant, and what is its secondary valve function?

A.Thermostat; controls radiator fan activation

B.Water pump impeller; regulates bypass circulation

C.Radiator pressure cap (라디에이터 캡); opens a vacuum relief valve during cooling

D.Expansion reserve tank; vents pressurized steam to the atmosphere

Explanation: The radiator pressure cap (라디에이터 캡) incorporates a spring-loaded pressure relief valve that maintains cooling system pressure at approximately 0.9 to 1.1 bar, elevating the coolant boiling point to roughly 120°C. When the engine cools and coolant volume contracts, a small central vacuum relief valve opens to draw coolant back from the reserve recovery tank, preventing radiator hose collapse.

3When adjusting valve clearance on an overhead camshaft (OHC) motorcycle engine using a shim-under-bucket arrangement, what is the required replacement shim thickness if the measured clearance is 0.10 mm, the specified clearance is 0.20 mm, and the installed shim thickness is 2.50 mm?

A.2.60 mm

B.2.40 mm

C.2.30 mm

D.2.70 mm

Explanation: Under the shim formula: New Shim Thickness = Installed Shim Thickness + (Measured Clearance - Specified Clearance). Here, New Shim = 2.50 mm + (0.10 mm - 0.20 mm) = 2.50 mm - 0.10 mm = 2.40 mm. Installing a thinner 2.40 mm shim increases the clearance gap by exactly 0.10 mm, bringing it to the required 0.20 mm specification.

4What primary operational malfunction occurs if motorcycle four-stroke engine valve clearance is adjusted with insufficient (too tight) clearance?

A.Loud metallic tapping noise from the cylinder head during idle

B.Exhaust valve overheating, poor sealing, and loss of compression when hot

C.Excessive valve lift causing piston-to-spark-plug contact

D.Rapid carbon buildup on the intake manifold runner walls

Explanation: When valve clearance is too tight (zero or negative clearance), thermal expansion of the valve stem as the engine reaches operating temperature prevents the valve from fully seating. Because the valve cannot contact the cooled cylinder head valve seat, heat transfer is severely impaired, causing hot compression leakage, poor idle, hard hot starting, and burnt exhaust valve faces.

5During a motorcycle engine overhaul, how should the piston ring end gap (피스톤 링 이음매 간극) be correctly measured?

A.While installed on the piston before entering the cylinder bore using a micrometer

B.By pushing the ring into the cylinder bore using the piston crown and checking the gap with a feeler gauge

C.By clamping the ring in a bench vise and reading deflection with a dial test indicator

D.While resting loosely on the top cylinder deck surface using a depth micrometer

Explanation: To measure piston-ring end gap accurately, insert the ring into the bore and use the piston to push it to the depth specified by the service manual so it sits square to the bore axis. Measure the gap with a feeler gauge. Because bore wear varies with depth, use the maker's stated measurement position rather than assuming the area just below the deck is the least worn.

6Why do high-performance two-stroke motorcycle engines typically utilize a caged needle roller bearing at the connecting rod small end (piston pin) rather than a bronze plain bushing?

A.Needle rollers provide low friction and high load capacity in a compact joint while receiving the oil mist carried by the two-stroke charge

B.Plain bronze bushings cannot withstand temperatures below 0°C during cold starts

C.Needle roller bearings eliminate the need for piston pin circlips

D.Bronze bushings cause galvanic corrosion with aluminum pistons

Explanation: Many two-stroke connecting rods do not have a pressurized oil feed at the small end; lubricant reaches the joint as oil mist in the inducted charge. A caged needle bearing carries a high oscillating load in a compact space with low sliding friction under that lubrication arrangement. A plain bushing is not universally impossible, but it requires a compatible pin, clearance, material, and lubrication design.

7In a dry-sump motorcycle lubrication system (드라이 섬프 윤활방식), what is the correct operational relationship between the scavenge pump and the feed pump?

A.The feed pump has twice the volumetric displacement of the scavenge pump

B.The scavenge pump has a larger pumping capacity than the feed pump to prevent crankcase oil pooling

C.Both pumps operate at identical flow rates driven by separate electric stepper motors

D.The scavenge pump only activates when the engine exceeds 5,000 RPM

Explanation: In a dry-sump system, the scavenge pump draws aerated oil and crankcase blow-by from the bottom of the engine sump and returns it to an external oil reservoir. Because the returning oil is heavily foamed and aerated, the scavenge pump's volumetric capacity is engineered to be 20% to 50% larger than the pressure feed pump to ensure the sump remains dry and free of parasitic crankshaft windage.

8Which JASO four-stroke oil classification should normally be selected when a motorcycle maker specifies oil compatible with a wet multi-plate clutch sharing the engine oil?

A.JASO MB

B.JASO MA / MA2

C.JASO FD

D.JASO GL-5

Explanation: JASO MA and MA2 define friction-performance ranges intended for motorcycles whose engine oil also serves the wet clutch. The vehicle manual determines the required viscosity and classification; MA2 has the higher-friction clutch range within the current JASO system. JASO MB is a lower-friction classification used only where the manufacturer permits it, commonly on designs whose clutch is not lubricated by the engine oil.

9On a motorcycle carburetor, what is the functional difference between a pilot fuel mixture screw located on the engine side of the throttle slide and an air screw located on the air-filter side?

A.Turning a pilot fuel screw clockwise leans the mixture; turning an air screw clockwise richens the mixture

B.Turning a pilot fuel screw clockwise richens the mixture; turning an air screw clockwise leans the mixture

C.Both screws control main jet fuel flow above 3/4 throttle opening

D.The air screw controls float chamber fuel level; the pilot screw controls choke operation

Explanation: A pilot fuel screw is situated downstream of the throttle slide (engine side) and meters fuel; turning it clockwise restricts fuel passage, leaning the idle mixture. Conversely, an air screw is situated upstream (air cleaner side) and meters pilot air bleed; turning it clockwise restricts air, enriching the idle mixture.

10To richen the fuel mixture during mid-range throttle operation (1/4 to 3/4 throttle) on a needle-jet motorcycle carburetor, what adjustment should the technician perform on the jet needle (제트 니들)?

A.Move the E-clip to a higher groove (lowering the needle)

B.Move the E-clip to a lower groove (raising the needle)

C.Install a larger diameter jet needle with a shallower taper

D.Screw the needle clockwise into the throttle slide

Explanation: Moving the E-clip to a lower groove on the jet needle physically raises the needle higher out of the needle jet orifice for any given throttle slide position. Because the tapered needle becomes thinner toward its tip, raising it exposes a larger annular clearance area inside the needle jet, allowing more fuel to be drawn into the venturi during mid-throttle operation.

About the Craftsman Motorcycle Vehicles Maintenance Exam

Craftsman Motorcycle Vehicles Maintenance (이륜자동차정비기능사) is South Korea's national technical qualification established in 2026 under the Ministry of Land, Infrastructure and Transport (MOLIT) and administered by HRD Korea (Q-Net). It certifies technical competence in inspecting, diagnosing, servicing, and overhauling two-wheeled motor vehicles, including internal combustion motorcycles, scooters, and modern electric two-wheelers (전기이륜차). The written exam covers four core areas: engine servicing, power transmission and chassis, electrical and EV systems, and frame/safety regulations. This question bank provides independent English-language MCQ study adaptation by OpenExamPrep; it is not an official translation or format simulation.

Exam sponsor: HRD Korea (Q-Net) / Ministry of Land, Infrastructure and Transport (MOLIT). The requirements and fees below concern the certification or admission exam, separate from our free practice resources.

Assessment

Written CBT paper (60 questions in 60 minutes covering two-wheeler maintenance topics) followed by a hands-on work-type practical (이륜자동차정비 실무). Q-Net currently lists the practical duration as undecided and to be announced.

Time Limit

60 minutes written CBT; practical duration currently TBD / to be announced by Q-Net

Passing Score

Written: 60/100 (at least 36 out of 60 questions correct); Practical: 60/100

Exam / Certification Fees

KRW 14,500 written / KRW 82,000 practical (total KRW 96,500)

Exam sponsor website

Fees, eligibility, and exam policies can change. Confirm them with the exam sponsor before applying or paying.

Official sources

Q-Net Craftsman Motorcycle Vehicles Maintenance (이륜자동차정비기능사) page (jmCd=9774) · Source checked 2026-09-20Official Korean/English titles, MOLIT as related ministry, HRD Korea administration, written fee KRW 14,500, practical fee KRW 82,000, 출제기준 2026.1.1–2029.12.31, and practical duration currently marked undecided / to be announced.
Q-Net National Technical Qualification Craftsman Grading Guide · Source checked 2026-09-20Written: 60 four-option CBT items, 60 minutes, passing score 60/100 (36 correct). Practical: 60/100.
Korea National Law Information Center — Motor Vehicle Management Act (자동차관리법) · Source checked 2026-09-20Legal provisions on two-wheeled vehicle usage reporting (사용신고) and periodic inspection.
Korea National Law Information Center — Noise and Vibration Control Act §35 and Enforcement Rules [별표 13] · Source checked 2026-09-20The current Act limits a two-wheeler to its certified exhaust-noise result plus 5 dB(A); the current rules retain a 105 dB(A) regulatory ceiling for applicable in-use two-wheelers.
National Technical Qualifications Act Enforcement Decree — 2-Year Written Pass Exemption · Source checked 2026-09-20

Our practice resources: topics covered

We aim to reflect publicly available exam outlines and topic information in our study resources. Coverage, format, and difficulty may differ from the actual exam, and we cannot guarantee that every detail is accurate or current. Confirm exam requirements, fees, and policies with the official exam sponsor.

30%

Motorcycle Engine Maintenance (이륜자동차 엔진정비)

Engine thermodynamics, 2-stroke and 4-stroke operations, valve train geometry and clearance adjustment, piston/cylinder wear limits, lubrication circuits, carburetors, electronic fuel injection (EFI), and exhaust emissions.

30%

Power Transmission & Chassis Maintenance (이륜자동차 동력전달 및 섀시정비)

Clutches (wet multi-plate and dry centrifugal), transmissions (constant-mesh sequential and CVT), final drive assemblies (drive chain, belt, shaft), frame structures, front forks, rear suspension, wheels, tires, and hydraulic/drum brakes with CBS/ABS.

25%

Electrical Systems & Electric Motorcycle Maintenance (이륜자동차 전기·전자장치 및 전기이륜차정비)

Permanent magnet AC generators, regulator/rectifiers, batteries, CDI/TCI ignition systems, lighting, electric motorcycle motors (BLDC/PMSM), electronic throttle grips, lithium-ion battery packs, BMS, and high-voltage safety.

15%

Frame, Safety Systems & Workshop Regulations (프레임, 안전·편의장치 및 정비법규·안전관리)

Steering head stem bearing maintenance, chassis rake and trail geometry, safety interlocks (side stand and bank angle sensors), workshop equipment safety, and Korean Motor Vehicle Management Act standards.

Preparing for the Craftsman Motorcycle Vehicles Maintenance Exam

What You Need to Know

Passing score: Written: 60/100 (at least 36 out of 60 questions correct); Practical: 60/100
Assessment: Written CBT paper (60 questions in 60 minutes covering two-wheeler maintenance topics) followed by a hands-on work-type practical (이륜자동차정비 실무). Q-Net currently lists the practical duration as undecided and to be announced.
Time limit: 60 minutes written CBT; practical duration currently TBD / to be announced by Q-Net
Exam / certification fees: KRW 14,500 written / KRW 82,000 practical (total KRW 96,500) Official sources

Using Our Practice Resources

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Craftsman Motorcycle Vehicles Maintenance: Suggested Study Strategy

1Master motorcycle-specific components: Unlike automotive exams, pay close attention to sequential dog-clutch transmissions, CVT variators, wet multi-plate clutches, and steering head stem bearings.

2Understand both carburetor and EFI systems: Study carburetor jets (pilot, needle, main), float height inspection, as well as electronic fuel injection sensors (manifold absolute pressure, throttle position, engine temperature).

3Focus on electric two-wheelers: Emphasize BLDC and PMSM motor characteristics, controller Hall sensor signal troubleshooting, battery management systems (BMS), and high-voltage isolation safety.

4Review current Korean two-wheeler rules: 이륜자동차 사용신고, emission-test procedures, and the in-use exhaust-noise rule. For covered vehicles, the certified exhaust result plus 5 dB(A) applies when it is stricter than the 105 dB(A) regulatory ceiling.

Frequently Asked Questions

What is the Craftsman Motorcycle Vehicles Maintenance (이륜자동차정비기능사) qualification?

It is a newly established South Korean National Technical Qualification (국가기술자격) introduced in 2026 under the Ministry of Land, Infrastructure and Transport (MOLIT) and administered by HRD Korea (Q-Net). It officially certifies professional competency in maintaining, troubleshooting, and repairing motorcycles, scooters, and electric two-wheelers.

What are the eligibility requirements for this exam?

There are no prerequisites. Craftsman (기능사) level qualifications in South Korea have no age, academic, or work experience restrictions; anyone can register and sit for the written CBT exam.

What is the structure and passing score of the written CBT exam?

The written exam consists of 60 multiple-choice questions (four choices each) administered via computer-based testing (CBT) over 60 minutes. The passing score is 60 points out of 100, which means answering at least 36 out of 60 questions correctly. Unlike Engineer-grade exams, there is no per-subject minimum (과락) for Craftsman exams.

What is covered in the practical examination (실기시험)?

The practical exam is a hands-on work-type test (이륜자동차정비 실무). Q-Net currently lists its duration as undecided and to be announced, so candidates should use the current official notice rather than assume a station schedule. This English MCQ bank does not simulate the practical format.

What are the examination fees?

As published on Q-Net for 2026, the written CBT fee is KRW 14,500 and the practical examination fee is KRW 82,000, for a total of KRW 96,500.

How long is a written exam pass valid?

Under Article 21 of the National Technical Qualifications Act Enforcement Decree, a candidate who passes the written examination is exempt from the written test for two full years from the date of the written pass announcement.