Husqvarna HH 389MPC Operator's Manual page 10

Engine maintenance
Replace the engine oil.
Examine the air filter. Clean the air filter if it is
necessary.
Clean the air filter. Clean at shorter intervals if
the engine is used in a dusty environment.
Replace the air filter. Applies to paper element
type only.
Clean the sediment cup.
Examine and clean the spark plug. Replace the
spark plug if it is necessary.
Replace the spark plug.
Clean the spark arrestor screen on the muffler.
Do a check of the idle speed.
Adjust the valve head clearance for the air in-
take and the exhaust valves.
Drain the fuel and clean the fuel tank and the
fuel filter.
Clean the combustion chamber.
Examine the fuel line. Replace it if it is neces-
sary.
To do a check of the engine oil level
The sensor for low oil level automatically stops the engine
before the engine oil level becomes too low but it is
recommended to do a check of the engine oil level before
each start. The sensor for low oil level is not included on
all engine models. Refer to .
CAUTION: Do not operate the engine with low
engine oil level. It can cause damage to the
engine.
CAUTION: Use detergent engine oil for 4-stroke
engines with the viscosity range shown in the
illustration.
5W-30
F
-20 0 20
C
-30 -20 -10
1. Stop the engine and make sure that it is level.
10
10W-30
SAE 30
50 60 80
32 40
0 10 20 30
Before After the
use, each first month months or
10 h or 20 h
X
X
2. Remove the oil tank cap and dipstick (A).
A
3. Clean the oil from the dipstick.
4. Put the dipstick back but do not tighten it.
5. Remove the dipstick.
100
6. Examine the engine oil level on the dipstick.
40
7. If the engine oil level is low (B), fill engine oil to the
edge of the oil tank hole (C).
8. Do a check of the engine oil level again.
9. Install the oil tank cap and dipstick.
Each 3 Each 6 Yearly or
months or
50 h 100 h
X
X
X
X
X
1537 - 003 - 18.11.2022
Each 2
each
years
300 h
X
X
X
X
X
X
O
O
O
O
C
B