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Maintenance
4st 25/30 2022
3. Oil Replacement Procedure
Engine oil that is contaminated by dirt or water can
significantly shorten the lives of the rotating and sliding
parts of the engine.
Replacement of Engine Oil:
1. Stop the engine and keep the outboard motor
standing upright.
2. Remove the top cowl, then remove the oil filler cap
1.
3. Place drain oil pan below drain bolt 2.
4. Remove the drain bolt to drain away the oil.
5) Replacement of Engine Oil
1. Oil Level
2. Oil Specification
Recommended Engine Oil:
Tohatsu 4-Stroke Engine Oil
Recommended Engine Oil Grade:
API: SH, SJ, SL
SAE: 10W-30, 10W-40
Quantity of Engine Oil:
(When oil filter is replaced) : 1.7 L (1.8 US qt.)
(When oil filter is not replaced): 1.5 L (1.6 US qt.)
OIL
Use oil with a viscosity that is suitable for the
ambient air temperature of the operating region.
If the outboard motor is tilted, the accurate
amount of engine oil cannot be poured in.
-20 -10 0 10 20 30 40
-4 +14 +32 +50 +68 +86 +104
10W – 40
10W – 30
c Engine Oil
d Outside Air Temperature
1 Oil Level Gauge
a Upper Limit
b Lower Limit
The engine and engine oil are hot
immediately after the engine stops. Work
after the engine has sufficiently cooled
down.
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