Checking Diesel Fuel, Engine Oil And Engine Coolant Levels; Checking The Battery Electrolyte Level; Checking The Alarm Indicators; Preparing Fuel, Oil And Coolant In Reserve - Yanmar 4BY2 Operation Manuals

Checking Diesel Fuel, Engine Oil
and Engine Coolant Levels
Follow the procedures in Filling the Fuel
Tank on page 24 and Checking Engine Oil
on page 29 to check these levels.
Checking the Battery Electrolyte
Level
Check the battery electrolyte level before
use. See Checking the Battery Electrolyte
Level (Serviceable Batteries Only) on page
49.

Checking the Alarm Indicators

Check the instruments and alarm indicators
at regular intervals.
Preparing Fuel, Oil and Coolant in
Reserve
Prepare sufficient fuel for the day's
operation. Always store engine oil and
coolant in reserve (for at least one refill) on
board, to be ready for emergencies.

Checking Power Steering Fluid

See Checking Power Steering Fluid Level
on page 30.
BY Series Operation Manual
Draining the Fuel / Water
Separator
Check the fuel filter / water separator for
presence of water and contaminants. If you
find any water or contaminants, drain the
fuel filter / water separator. If you have to
drain the fuel filter / water separator
frequently, drain the fuel tank and check for
water in your fuel supply. See Draining the
Fuel Tank on page 51.
1. Turn engine OFF.
2. Ensure the fuel cock is closed.
3. Loosen the drain plug at the bottom of
4. Dispose of waste properly.
5. Tighten the drain plug and open the fuel
© 2008 Yanmar Marine International
PERIODIC MAINTENANCE
the fuel filter / water separator and drain
off any water or sediment.
cock.
47