Beta Marine Beta 10 Operator's Maintenance Manual page 20

PROBLEM: LOW OIL PRESSURE WARNING LIGHT
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: PANEL REV COUNTER NOT WORKING (WHEN FITTED
Possible Cause
No W connection to alternator.
Wiring fault:
PROBLEM: ENGINE OVERHEATS
Possible Cause
Check coolant level:
Insufficient sea water flow:
Damaged or worn pump impeller:
Blocked tube stack in heat
exchanger:
Zinc anode flakes blocking tube stack:
Pressure cap loose:
Switch sender faulty:
Inlet sea cock is too small:
High exhaust back pressure:
Air locks in cooling pipe work to keel
cooler:
Keel cooler of insufficient size:
comes on when engine speed reduced to tick over:
Solution
Replace.
Check cooling water flow (see section 2 Cooling).
Remove and clean.
Change.
Check circuit.
Top up and check for leaks.
Solution
Check power output from 'W' connection. Should be about 9V AC.
Check circuit.
Solution
Top up.
Clear blocked intake or filter.
Replace.
Remove tube stack and clean - replace 'O' rings.
Remove and clean tube stack as above.
Replace.
Replace.
Replace (see heat exchanger cooled seawater inlet system in section 3).
Must not exceed 3.1" of Hg.
Vent the system and top up coolant.
Contact boat builder.
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