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 TM 55-1905-223-24-1
(f)
Crank engine at least 15 seconds (with fuel shutoff valve closed or disconnected to prevent
starting), while maintaining external oil pressure at a minimum of 15 psi (103 kPa).
(g)
Remove priming hose and replace the plug removed in step (c).
(3)
Lubricating Oil Dipstick Gauge Marking. All marine engines are shipped with unmarked lubricating
oil dipstick gauges. The reason for this is the engne mounting angle which is determined at
i
installation. Even though a given amount of oil is required, the dipstick must be marked so the oil
level is correct at the engine mounting angle. If marking has not been previously accomplished or
the dipstick is lost, the following procedures apply:
(a)
With engine in the installed position and the boat in the water, use the sump pump to completely
drain the engine.
CAUTION
Any oil left in oil pan will cause error in marking. Oil sometimes accumulates as the oil drains from
upper portions and oil passages within the engine; therefore, it is necessary to wait 15 minutes after
the sump pump has emptied the oil pan initially to pump out the remaining oil, ensuring complete
evacuation of oil from the engine.
(b)
A tag is attached to new engines indicating high and low capacities of the oil pan. The capacity of
the KTA50-M engine is 32 gallons (low) to 55 gallons (high).
NOTE
The above figures do not include amount required to fill oil lines and oil purifier.
(c)
Fill engine with amount of oil listed as low-level oil pan capacity (32 gallons).
(d)
Allow 5 minutes or more for oil to drain to the oil pan. If engine and/or oil temperature is below
40 (4 ), a longer period may be required.
F
C
(e)
Insert dipstick (2, FIG. 2-1) into gauge tube until fully seated; hold for 5 to 10 seconds, then `
withdraw slowly.
(f)
Mark oil level indicated on dipstick with an electric etch. Depth of mark must not exceed 0.010
inch (0.24 mm). Etch "L" above mark.
(g)
Add enough additional oil to fill engine to listed high-level capacity (55 gallons).
(h)
Repeat steps (d), (e), and (f). Etch letter "H" directly above the second or "high" level mark.
2-4
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