How do you operate the fuel supply valve?

How do you operate the fuel supply valve?

• A. Turn it from ON to OFF.
• B. Turn it from OFF to ON. It may include PRESERVE and PRIME positions.
• C. Turn it to PRESERVE only.
• D. Turn it to PRIME only.

Answer: (B)

Fuel valves control whether fuel can reach the carburetor. For normal running, you need fuel to flow, so you turn the valve from OFF to ON. Some bikes’ valves also have extra positions: PRIME and RESERVE. PRIME is used briefly to flood the carburetor and help start a cold engine. RESERVE lets you access the fuel in the lower portion of the tank when the main supply runs low. So, set the valve to ON for normal operation; if the engine is hard to start when cold, you can use PRIME for a moment and then return to ON; when you’re low on fuel, switch to RESERVE to use the remaining fuel.

Fuel valves control whether fuel can reach the carburetor. For normal running, you need fuel to flow, so you turn the valve from OFF to ON. Some bikes’ valves also have extra positions: PRIME and RESERVE. PRIME is used briefly to flood the carburetor and help start a cold engine. RESERVE lets you access the fuel in the lower portion of the tank when the main supply runs low. So, set the valve to ON for normal operation; if the engine is hard to start when cold, you can use PRIME for a moment and then return to ON; when you’re low on fuel, switch to RESERVE to use the remaining fuel.