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Problem: White or blue exhaust gas
Possible Cause Solution
Engine oil level too high: Reduce the level.
Blocked injector: Service injectors.
Piston ring and bore worn or con rod bent due to water Get compression checked by your dealer or Kubota
ingression, giving a low compression: service agent. He will advise action to be taken.
Check that the breather pipe is clear and not obstructed: Remove and clean out
Problem: Low oil pressure warning light on when engine speed reduced to tick over
Possible Cause Solution
Faulty switch sender: Replace.
Engine running too hot: Check cooling water flow (see section 2 Cooling).
Oil relief valve stuck partially open with dirt: Remove and clean.
Blocked oil filter: Change.
Wiring fault: Check circuit.
Insufficient oil: Top up and check for leaks.
Problem: Panel rev counter not working (when fitted).
Problem: Low oil pressure warning light on when underway
Possible Cause Solution
Oil frothing due to high installation angle or too high oil level: Refer to Beta Marine for advice
Problem: High oil consumption
Possible Cause Solution
Oil leaks: Check for leaks.
Piston rings worn: Overhaul required.
Valve stem and guide worn: Overhaul required.
Piston rings gap facing the same direction: Shift ring gap position. Service Agent to check.
Problem: Black exhaust gas
Possible Cause Solution
Blocked air filter element: Inspect and replace.
Over pitched propeller - engine will not reach its full rpm: Get the propeller re-pitched if necessary.
Accumulated debris on hull: Inspect and clean if required.
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