8. Install a new filter element. Ensure the
filter fits snugly in the filter cap.
9. Install the cap and filter assembly.
Tighten cap by hand until the seal
touches the housing.
10. Tighten to 25 N·m (225 in.-lb).
11. Fill with new engine oil. See Adding
NOTICE: NEVER mix different types of
engine oil. This may adversely affect the
lubricating properties of the engine oil.
NEVER overfill. Overfilling may result in
white exhaust smoke, engine
overspeed or internal damage.
12. Perform a trial run and check for oil
leaks.
13. Approximately 10 minutes after
stopping the engine, remove the oil
dipstick and check the oil level. Add oil
if the level is too low.
Checking Shift Cable Adjustment
See your authorized Yanmar dealer or
distributor.
Adjusting Propeller Shaft Alignment
(If Equipped with Marine Gear)
The flexible engine mounts are slightly
compressed during initial engine operation
and may cause misalignment between the
engine and the propeller shaft.
This adjustment requires specialized
knowledge and techniques. See your
authorized Yanmar dealer or distributor.
Every 50 Hours of Operation
After you complete the initial 50 hour
maintenance procedures, perform the
following procedures every 50 hours or
monthly, whichever comes first.
• Checking Seawater Filter (If Equipped)
and Inlet
• Checking the Air Intake System
• Checking Battery Electrolyte Level
(Serviceable Batteries Only)
Checking the Seawater Filter (If
Equipped) and Inlet
Refer to boat builder’s literature for
information on the seawater filter.
Checking the Air Intake System
Check the air intake system for damage or
wear. If necessary, consult your authorized
Yanmar dealer or distributor for repair.
Checking the Battery Electrolyte
Level (Serviceable Batteries Only)
WARNING! Batteries contain sulfuric
acid. NEVER allow battery fluid to come
in contact with clothing, skin or eyes.
Severe burns could result. ALWAYS
wear safety goggles and protective
clothing when servicing the battery. If
battery fluid contacts the eyes and / or
skin, immediately flush the affected area
with a large amount of clean water and
obtain prompt medical treatment.
NOTICE: NEVER turn off the battery switch
(if equipped) or short the battery cables
during operation. Damage to the electric
system will result.
1. Turn the battery master switch OFF (if
equipped) or disconnect the negative (-)
battery cable.
2. Do not operate with insufficient battery
electrolyte as the battery will be
destroyed.
PERIODIC MAINTENANCE
BY Series Operation Manual
49
© 2008 Yanmar Marine International
