Flywheel; Crankcase - Husqvarna HS 139A Workshop Manual

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6.9 Flywheel

6.9.1 To remove and install the flywheel
1. Remove the spark plug cap from the spark plug.
2. Remove the engine cover.
3. Remove the 3 nuts that hold the flywheel housing.
4. Remove the flywheel housing.
5. Remove the flywheel nut.
6. Remove the flywheel with the flywheel puller kit.
7. Examine the flywheel for damages and replace the
flywheel if it is necessary.
8. Install in the opposite sequence.
9. Make sure that the air gap between the flywheel and
Standard
the ignition module is correct. Refer to
dimensions and wear limits on page 45 .

6.10 Crankcase

6.10.1 To drain the crankcase from oil
1. Start the engine and let it run for approximately 1
minute. This is to increase the temperature of the oil
and make it drain faster.
2. Remove the oil filler cap.
3. Put the product on its side above a container with
the oil filler tube pointed down.
1425 - 001 - 03.06.2020
4. Make sure all oil is drained before you move the
product.
6.10.2 To fill the crankcase with oil
1. Put the product on a flat surface.
2. Remove the oil filler cap.
3. Fill the crankcase with oil. The oil level must be in
between the marks on the dipstick. Use the correct
Technical data on page 41 .
type of oil. Refer to
6.10.3 To disassemble the crankcase
To replace the
1. Drain the oil in the oil tank. Refer to
engine oil on page 7 .
2. Remove the engine cover and the flywheel housing.
To remove the fuel
3. Remove the fuel tank. Refer to
tank on page 32 .
To remove and install
4. Remove the flywheel. Refer to
the flywheel on page 33 .
To remove
5. Remove the ignition module. Refer to
and install the ignition module on page 30 .
6. Remove the engine from the product.
7. Remove the top crankcase half from the bottom
crankcase half.
8. Use a puller to disconnect the crankcase halves.
9. Remove the 2 connecting rod bolts.
Repair instructions- 33

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Hs 166a

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