Yanmar BY series Specifikace Strana 107

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TROUBLESHOOTING
100 BY Series Operation Manual
Engine Knocks
Low Power Output
Problem / Symptom Cause Action
Excess Fuel Injected
Defective fuel injector
See your authorized Yanmar dealer
or distributor
High fuel injection pressure
Noise Changes with Engine Load
Incorrect or poor quality fuel Drain and refill tank with proper fuel
Worn crankshaft / bearings
See your authorized Yanmar dealer
or distributor
Broken piston /rings
Problem / Symptom Cause Action
Miscellaneous
Clogged air filter Clean or replace
Leaking cylinder head gasket
See your authorized Yanmar
dealer or distributor
Damaged turbocharger
Incorrect propeller
Excessive exhaust back pressure
Fuel
Plugged fuel filter(s) Replace as necessary
Faulty fuel supply pump
See your authorized Yanmar
dealer or distributor
Low Fuel Injection Pressure
Defective fuel pressure
regulator / sensor
See your authorized Yanmar
dealer or distributorWorn high-pressure fuel pump
Injection timing is incorrect
Low RPM at Wide Open Throttle
Propeller pitch too great
See your authorized Yanmar
dealer or distributor
Engine overheated
Damaged turbocharger
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