Beta Marine Beta 10 Operator's Maintenance Manual page 32

Problem: Black exhaust gas
Possible Cause
Blocked air filter element:
Over pitched propeller - engine will not reach its full rpm:
Accumulated debris on hull:
Problem: Low oil pressure warning light on when underway
Possible Cause
Oil frothing due to high installation angle or too high oil level:
Problem: Low oil pressure warning light on when engine speed is reduced to tick over
Possible Cause
Faulty switch sender:
Engine running too hot:
Oil relief valve stuck partially open with dirt:
Blocked oil filter:
Wiring fault:
Insufficient oil:
Problem:
Problem: High oil consumption
Possible Cause
Oil leaks:
Piston rings worn:
Valve stem and guide worn:
Piston rings gap facing the same direction:
Problem: Water in lubricating oil - general
Possible Cause
Core plug pushed out due to frozen block:
Water pump seal damaged:
Problem: Water in lubricating oil - heat exchanger cooled
Possible Cause
Oil goes "milky" due to seawater entering exhaust manifold:
Solution
Inspect and replace.
Get the propeller re-pitched if necessary.
Inspect and clean if required.
Solution
Refer to Beta Marine for advice
Solution
Replace.
Check cooling water flow (see section 2 Cooling).
Remove and clean.
Change.
Check circuit.
Top up and check for leaks.
Panel rev counter not working (when fitted).
Solution
Check for leaks.
Overhaul required.
Overhaul required.
Shift ring gap position. Service Agent to check.
Solution
Service Agent to check and replace.
Service Agent to check and replace.
Solution
Check installation - has anti-siphon valve been fitted?
Change engine oil and run engine for 10 minutes each
time to eliminate any water. Get fuel injection pump and
compression checked by Service Agent.
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