Ignition System; Check The Safety System; Replacing The Light Bulbs - Husqvarna Rider 316T Operator's Manual

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8 Pull the filter over the air hose and clamp the filter
cartridge in place with a hose clip.
9 Refit the air filter cover.

Ignition system

The engine is equipped with an electronic ignition system.
Only the spark plug requires maintenance.
For recommended spark plug, see Technical data.
IMPORTANT INFORMATION
Fitting the wrong spark plug type can damage the engine.
Replacing the spark plug
1 Remove the ignition cable shoe and clean around the
spark plug.
2 Remove the spark plug with a 3/4" (19 mm) spark plug
socket wrench.
3 Check the spark plug. Replace the spark plug if the
electrodes are burned or if the insulation is cracked or
damaged. Clean the spark plug with a steel brush if it is to
be reused.
4 Measure the electrode gap with a gapping tool. The gap
should be 0.75 mm/0.030". Adjust as necessary by
bending the side electrode.
5 Reinsert the spark plug, turning by hand to avoid
damaging the threads.
6 Tighten the spark plug, once it touches the seating, with
the spark plug spanner. Tighten the spark plug so that the
washer is compressed. A used spark plug should be
turned 1/8 of a turn from the seated position. A new spark
plug should be turned a 1/4 turn from the seated position.
7 Replace the ignition cable shoe.
IMPORTANT INFORMATION
Inadequately tightened spark plugs can cause overheating
and damage the engine. Tightening the spark plug too
much can damage the threads in the cylinder head.
22 –
English
Maintenance

Check the safety system

The machine is equipped with a safety system that prevents
starting or driving under the following conditions.
The engine can only be started when:
The cutting deck is raised and the parking brake is
applied.
The engine should stop when:
The cutting deck is lowered and the driver rises from the
seat.
The cutting deck is in its raised position, the parking brake
is not applied and the driver rises from the seat.
Check daily to ensure that the safety system works by
attempting to start the engine when one of the conditions
above is not met. Change the conditions and try again.

Replacing the light bulbs

For information about the bulb type, see Technical Data.
1 Unscrew the two screws holding the cover on the power
servo housing. One screw on each side.
2 Disconnect the cables from the bulbs.
3 Gently push in the locking mechanism and fold out the
lamps from their brackets.
4 Insert the new lamps in the lower slot on the lamp
housing.

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