Husqvarna ST 427 Owner Manual - Page 18

Battery, Muffler, To examine the spark plug

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Battery Battery maintenance Note: The battery on your product is maintenance free. Do not open or remove the caps or the covers. To charge the battery Note: Before long term storage, charge the battery with a battery charger to extend the life of the battery. 1. Remove the battery cover. Refer to To replace the battery on page 18. 2. Clean the terminals. Refer to To clean the battery and the terminals on page 18. 3. Connect the battery charger to the battery charger connector (A). A 4. When the battery is charged, disconnect the battery charger. 5. Install the battery cover. To replace the battery WARNING: Risk of electrical shock. Do not let metal objects touch the 2 battery terminals. This can cause a short circuit of the battery. 1. Loosen the knob (A), then tilt the bottom of the cover in the direction of the engine. Lift the battery cover off the holders (B). B A 2. Disconnect the BLACK battery cable. WARNING: The BLACK cable must be disconnected first. 3. Disconnect the RED battery cable. 4. Loosen the nuts and remove the battery strap. 5. Carefully remove the battery from the product. 6. Install a new battery. 7. Connect the RED battery cable and tighten the bolt. WARNING: Risk of sparks. The RED cable must be connected first. 8. Connect the BLACK cable and tighten the bolt. 9. Install the battery cover. To clean the battery and the terminals 1. Remove the battery. Refer to To replace the battery on page 18. 2. Flush the battery with plain water and let it become dry. 3. Clean the terminals and battery cable ends with a wire brush until they are bright. 4. Lubricate the terminals with grease. 5. Install the battery. See To replace the battery on page 18. 6. Install the battery cover. Muffler The muffler keeps the noise levels to a minimum and sends the exhaust fumes away from the operator. Do not use the product if the muffler is missing or defective. A defective muffler increases the noise level and the risk of fire. WARNING: The muffler becomes very hot during and after use and when the engine operates at idle speed. Be careful near flammable materials and/or fumes to prevent fire. To examine the spark plug CAUTION: Always use the recommended spark plug type. Incorrect spark plug type can cause damage to the product. • Examine the spark plug if the engine is low on power, is not easy to start or does not operate correctly at idle speed. • To decrease the risk of unwanted material on the spark plug electrodes, obey these instructions: a) Make sure that the idle speed is correctly adjusted. b) Make sure that the fuel mixture is correct. 18 876 - 011 - 11.05.2020

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Battery
Battery maintenance
Note:
The battery on your product is maintenance
free. Do not open or remove the caps or the covers.
To charge the battery
Note:
Before long term storage, charge the battery
with a battery charger to extend the life of the
battery.
1.
Remove the battery cover. Refer to
To replace
the battery on page 18
.
2.
Clean the terminals. Refer to
To clean the battery
and the terminals on page 18
.
3.
Connect the battery charger to the battery
charger connector (A).
A
4.
When the battery is charged, disconnect the
battery charger.
5.
Install the battery cover.
To replace the battery
WARNING:
Risk of electrical shock. Do
not let metal objects touch the 2 battery
terminals. This can cause a short circuit
of the battery.
1.
Loosen the knob (A), then tilt the bottom of the
cover in the direction of the engine. Lift the
battery cover off the holders (B).
B
A
2.
Disconnect the BLACK battery cable.
WARNING:
The BLACK cable must
be disconnected first.
3.
Disconnect the RED battery cable.
4.
Loosen the nuts and remove the battery strap.
5.
Carefully remove the battery from the product.
6.
Install a new battery.
7.
Connect the RED battery cable and tighten the
bolt.
WARNING:
Risk of sparks. The RED
cable must be connected first.
8.
Connect the BLACK cable and tighten the bolt.
9.
Install the battery cover.
To clean the battery and the terminals
1.
Remove the battery. Refer to
To replace the
battery on page 18
.
2.
Flush the battery with plain water and let it
become dry.
3.
Clean the terminals and battery cable ends with
a wire brush until they are bright.
4.
Lubricate the terminals with grease.
5.
Install the battery. See
To replace the battery on
page 18
.
6.
Install the battery cover.
Muffler
The muffler keeps the noise levels to a minimum and
sends the exhaust fumes away from the operator.
Do not use the product if the muffler is missing or
defective. A defective muffler increases the noise
level and the risk of fire.
WARNING:
The muffler becomes very
hot during and after use and when the
engine operates at idle speed. Be careful
near flammable materials and/or fumes
to prevent fire.
To examine the spark plug
CAUTION:
Always use the
recommended spark plug type. Incorrect
spark plug type can cause damage to
the product.
•
Examine the spark plug if the engine is low on
power, is not easy to start or does not operate
correctly at idle speed.
•
To decrease the risk of unwanted material on the
spark plug electrodes, obey these instructions:
a)
Make sure that the idle speed is correctly
adjusted.
b)
Make sure that the fuel mixture is correct.
18
876 - 011 - 11.05.2020