Husqvarna R 316TX Operator's Manual page 22

12. Attach the air filter cartridge with the hose clip.
13. Attach the air filter cover and tighten the knobs.
To examine and replace the spark
plug
1. Open the engine cover.
2. Remove the ignition cable shoe and clean around
the spark plug.
3. Remove the spark plug with a 21 mm (0.83ʺ) spark
plug wrench.
4. Examine the spark plug. Replace it if the electrodes
are burned or if the insulation has cracks or
damages. If the spark plug is not damaged, clean it
with a steel brush.
5. Measure the electrode gap and make sure that it is
Technical data on page 109 .
correct. See
6. Bend the side electrode to adjust the electrode gap.
7. Put the spark plug back in and turn it by hand until it
touches the spark plug seat.
8. Tighten the spark plug with the spark plug wrench
until the washer is compressed.
9. Tighten a used spark plug ⅛ of a turn more, and a
new spark plug ¼ turn more.
CAUTION: Spark plugs that are not
tightened correctly can cause damage to
the engine.
10. Replace the ignition cable shoe.
CAUTION: Do not try to start the engine
if the spark plug or ignition cable is
removed.
To replace the main fuse
A blown fuse is identified by a burned connector.
1. Open the engine cover. The main fuse is in a holder
in between the battery and the engine.
98
2. Pull the fuse from the holder.
3. Replace the blown fuse with a new fuse of the same
type, flat pin 20 A.
4. Replace the covers.
If the main fuse blows again a short period after you
replace it, there is a short circuit. Repair the short circuit
before you operate the product again. Let an approved
service agent help you.
To charge the battery
• Charge the battery if it is too weak to start the
engine.
• Use a standard battery charger.
CAUTION: Do not use a boost charger
or start booster. That will cause damage
to the electrical system of the product.
• Always disconnect the charger before starting the
engine.
To do an emergency start of the
engine
If the battery is too weak to start the engine, you can use
jumper cables to do an emergency start. This product
has a 12 V system with negative ground. The product
that is used for the emergency start must also have a 12
V system with negative ground.
To connect the jumper cables
WARNING: Risk of explosion because of
explosive gas that comes from the battery.
Do not connect the negative terminal of the
fully charged battery to or near the negative
terminal of the weak battery.
CAUTION: Do not use the battery of your
product to start other vehicles.
1. Remove the engine cover.
2. Remove the cover for the battery case.
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