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WorksheetsInline Homework 3
Total questions: 10
Worksheet time: 5mins
It is recommended to use Ring Free Plus _____
1 oz per 50 gallons of fuel ( continuous use)
As an oil additive for "shock treatment" only
2oz per every 5 quarts of engine oil
1oz per 10 gallons of fuel ( continuous use)
You can use automotive oils in your Yamaha Outboards if minimum specs are met
True
False
The engine specs call for a B7HS-10 NGK spark Plug, but someone has installed a BR7HS-10. How will the engine be affected
The engine will not be affected
The engine could skip and run rough due to excess RFI at the ECU
The spark plug will overheat and lead to detonation in the combustion chamber
The spark will be "delayed" and the engine will lose power
YIEC can be bought over the counter at your local dealership
True
False
Which of the following should you do prior to checking the engine oil level on an engine that has been run?
Loosen the fill screw to vent the crankcase.
After running the engine, wait five minutes before pulling the dipstick
Tilt the engine at least half way up for at least five minutes, then tilt down until level.
Ensure the engine is trimmed all the way down.
Before doing any extensive valve adjustment work on a 4 stroke engine, what should you do first.
Drain the engine oil to prevent debris from entering the cylinder head.
Replace the timing belt and recheck valve clearance
Decarbonize the engine
Run a heavier grade engine oil for 10 hours, then recheck valve clearance
Draining the engine oil through the drain screw versus extracting it through the dipstick tube, guarantees all the oil will be removed.
True
False
When checking engine oil level on a Yamaha, you need to remove the dipstick more than once because the dipstick tube is not vented to the atmosphere
True
Flase
The engine specs call for a BR7HS-10 NGK spark plug, but someone has installed a B7HS-10. How will the engine be affected?
The engine will not be affected.
The engine could skip and run rough due to excess RFI at the ECU.
The spark plug will overheat and lead to detonation in the combustion chamber.
The spark will be "delayed" and the engine will lose power.
Yamaha ring free ________
Increases anti-knock value of fuel
is an oil additive
removes carbon deposits
all of the above
