Beta Marine Beta 28 Operator's Maintenance Manual page 46

Problem: White or blue exhaust gas
Possible Cause
Engine oil level too high:
Blocked injector:
Piston ring and bore worn or con rod bent due to water
ingression, giving a low compression:
Check that the breather pipe is clear and not obstructed:
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: Refer to Beta Marine for advice
Problem: Low oil pressure warning light on when engine speed 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:
Solution
Reduce the level.
Service injectors.
Get compression checked by your dealer or Kubota
service agent. He will advise action to be taken.
Remove and clean out
Solution
Inspect and replace.
Get the propeller re-pitched if necessary.
Inspect and clean if required.
Solution
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.
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