Small Gas Engines - Fuel Systems

1. What is the main purpose of a carburetor?

• store fuel

• clean fuel

• maintain constant velocity

• mix air and fuel

Identify this part?

• Crankshaft
• Cylinder Head
• Carburetor
• Heat Shield

What is the first stroke of an engine?

• Compression

• Intake

• Power

• Exhaust

During the compression stroke the piston moves________

• up
• in both directions
• the hot gasses out of the cylinder
• down

Match marks are on the _______and the ____________

• crankshaft and connecting rod
• crankshaft and shroud
• crankshaft and camshaft
• camshaft and govenor

The power stroke occurs ______percent of one complete cycle in a four stroke engine.

• 14 %  
• 15 %
• 20 %
• 25 %

An event that ignites the fuel air mixture occurs between the _______stroke and the _________stroke

• compression and power
• power and intake
• intake and power
• compression and intake

A sump in a small engine refers to a reservoir of __________?

• Compressed Air
• Antifreeze
• Water
• Oil

Name two risks associated with working on a spark ignition system.

• Electric shock

• Fuel loss from the tank

• Burns from a hot engine when removing a spark plug

• All of the above

Which component of the carburetor increases the velocity of air moving through the carburetor?

• float

• venturi

• main jet

• needle valve