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WorksheetsYamaha MCP Midrange Section 6
Total questions: 10
Worksheet time: 5mins
Gasoline blended with more than 10% ethanol is NOT recommended in Yamaha engines because ____ .
ethanol attracts and absorbs moisture
ethanol can damage fuel system components
ethanol can loosen particulate matter in the fuel system and contaminate the fuel
all are valid reasons
A special fuel pressure gauge is required to check fuel pressure if an external sensor is not being used.
True
False
What is the maximum percentage of ethanol recommended in Yamaha outboard engines?
5
8
10
12
The vapor separator tank houses the medium pressure fuel pump.
True
False
A 10-micron filter, installed in the boat, is the best defense against engine filter contamination.
True
False
When does fuel deteriorate?
as soon as it leaves the refinery
when stored for prolonged periods of time
when water is mixed with ethanol in the gasoline
all options are correct
A clogged VST filter will cause a running issue.
True
False
To prevent or prolong fuel deterioration, technicians can do the following:
Don’t store fuel at all.
Mix fresh fuel with stale fuel to boost the octane.
Bleed the fuel system to remove air bubbles.
Don't store fuel at all AND mix fresh fuel with stale fuel to boost the octane.
For long-term storage, what is the recommended mixture for fuel conditioner/stabilizer?
One ounce to every five gallons of fuel
Two ounces to every gallon of fuel
One ounce to every gallon of fuel
One ounce to every three gallons of fuel
For continuous use, what is the recommended mixture for fuel conditioner/stabilizer?
One ounce to every five gallons of fuel
Two ounces to every gallon of fuel
One ounce to every gallon of fuel
One ounce to every three gallons of fuel
