are in Italics
Fish & Wildlife Mgmt.
Model Design & Building
Pulp and Paper
Reptile & Amphibian Study
Small Boat Sailing
Soil & Water
NOTE: Access to an automobile or truck (with owners
manual) is needed to meet some of the requirements for this merit badge.
- Discuss with your counselor the safety equipment,
tools, and clothing used while checking or repairing a motor vehicle. Use this
equipment, tools, and/or clothing (when needed of called for) in meeting the
requirements for this merit badge.
- Explain how an internal combustion engine operates
and the differences between gasoline and diesel engines.
- Demonstrate you knowledge of general maintenance. Do
- Demonstrate how to check the fluid level of the
- Brake Fluid
- Engine Oil
- Power steering fluid
- Windshield washer fluid
- Transmission fluid (automatic and standard)
- Check battery fluid, if possible, and the condition
of battery terminals.
- Show the location of fuse boxes and the size of
fuses, and demonstrate the proper replacement of burned-out fuses.
- Review the maintenance chart in the owner's manual.
Explain the requirements and time limits.
- Choose a care cleaner and wax product for the
vehicle. explain clear-coat paint and the precautions necessary for care.
Clean and wax the vehicle, both inside and out.
- Use a vinyl and rubber protectant (on vinyl tops,
rubber door seals, sidewalls, etc.) and explain the importance of this
- Demonstrate how to check the condition and tension
of belts and hoses.
- Demonstrate the following:
- Check the lighting in the vehicle, including
instrument, warning, and exterior bulbs.
- Check headlight alignment
- Demonstrate how to check the vehicle exhaust
- Demonstrate your knowledge of the following:
- Explain the difference between tire and vehicle
manufacturer's information specifications and demonstrate where to find
- Demonstrate how to check pressure and properly
inflate a tire.
- Using the manufacturer's jack supplied with the
- Demonstrate how to engage the jack correctly on
- Demonstrate how to change a tire correctly .
- Explain the difference between bias-belted tires
and radial-belted tires.
- Diagram and explain in writing how to rotate
bias-belted and radial-belted tires.
- Using the manufacturer's guidelines, rotate the
tires on the vehicle.
- Explain the camber, caster, and toe-in
adjustments on wheel alignment.
- Explain why wheel alignment is important to the
life of a tire.
- Explain the purpose of the lateral-wear bar
- Explain how to dispose of old tires properly.
- Demonstrate your knowledge of engine lubrication. Do
- Explain the purpose of motor oil.
- Explain where to find the recommended type and
amount of oil to be used in the vehicle engine.
- Explain the difference in viscosity (10W/30 versus
- Perform an oil change and oil filter change on a
- Explain how to dispose of the used oil and filter
- Cooling system Do the following:
- Explain the need for coolant in the cooling system.
- Flush and change the engine coolant in the vehicle
according to the manufacturer's instructions.
- Explain how to dispose of used coolant properly.
- Demonstrate your knowledge of a fuel system. Do the
- Explain how the air and fuel system work together.
- Explain how a carburetor works and how a fuel-
injection system works.
- Explain how an on-board computer works with the
fuel injection system. Show where the computer is located.
- Explain why it is necessary to have an air filter
and a fuel filter. Locate them and change them according to the
- Explain what fuel additives are. for both the
carburetor and the fuel injection systems.
- Demonstrate your knowledge of ignition and electrical
systems. Do the following:
- Diagram and explain the parts of the electrical
- Explain the cylinder engine sequence.
- Explain the spark plug gap and if practical, change
the spark plug. (Use an engine with spark plugs that can be reached without
tilting the engine.)
- Demonstrate how to connect jumper cables on your
battery properly. Explain how to jump-start a vehicle.
- Explain the difference between electronic and point
- Demonstrate your knowledge of a drive train. Do the
- Diagram the drive train and explain the different
- Explain the difference between automatic and
- Explain the types of automatic transmission fluid.
- Explain the types of lubricants used in a standard
transmission and in the differential.
- Explain the difference between front-wheel, rear-
wheel, and four-wheel drive.
- Explain the gear ratio of the differential.
- Demonstrate your knowledge of a brake system. Do the
- Explain the brake system (including anti-lock
systems) and how it operates.
- Explain the differences between disc and drum
- Demonstrate checking conditions on a vehicle brake
system. After checking make recommendations for repairs (if necessary).
- Explain the purpose, importance, and limitations of