Briggs & Stratton 2691691-00 Operator's Manual page 16

1. Loosen the fasteners (A, Figure 25) and remove the
cover (B).
2. To remove the filter (C, Figure 25), lift the end of the
filter.
3. Remove the pre-cleaner (D, Figure 25), if equipped, from
the filter.
4. To loosen debris, gently tap the filter on a hard surface. If
the filter is excessively dirty, replace with a new filter.
5. Wash the pre-cleaner in liquid detergent and water. Then
allow it to thoroughly air dry. Do not oil the precleaner.
6. Assemble the dry pre-cleaner to the filter.
7. Install the filter into the engine base (E, Figure 25) and
push down until the filter snaps in place.
8. Install the cover.
Service Air Filter
See Figure: 26
WARNING
Fuel and its vapors are extremely flammable and
explosive.
Fire or explosion can cause severe burns or death.
• Never start and run the engine with the air cleaner
assembly (if equipped) or the air filter (if equipped)
removed.
NOTICE Do not use pressurized air or solvents to clean
the filter. Pressurized air can damage the filter and solvents
will dissolve the filter.
See the Maintenance Schedule for service requirements.
Various models use either a foam or a paper filter. Some
models may also have an optional pre-cleaner that can be
washed and reused. Compare the illustrations in this manual
with the type installed on your engine and service as follows.
1. Loosen the fastener(s) (A, Figure 26).
2. Remove the cover (B, Figure 26).
3. To remove the filter (C, Figure 26), lift the end of the filter
and then pull the filter off the intake (E).
4. To loosen debris, gently tap the filter (C, Filter 26) on a
hard surface. If the filter is excessively dirty, replace with
a new filter.
5. Remove the pre-cleaner (D, Figure 26), if equipped, from
the filter (C).
6. Wash the pre-cleaner (D, Figure 26) in liquid detergent
and water. Allow the pre-cleaner to air dry. Do not oil the
pre-cleaner.
7. Assemble the dry pre-cleaner (D, Figure 26), if equipped,
to the filter (C).
8. Install the filter (C, Figure 26) on the intake (E). Push
the end of the filter into the base. Make sure the filter fits
securely in the base.
16
9. Install the cover (B, Figure 26) and secure with the
fastener(s) (A). Make sure the fastener(s) is tight.
Check the Spark Plugs
WARNING
Unintentional sparking can result in fire or electric shock.
Unintentional start-up can result in entanglement, traumatic
amputation, or laceration.
When testing for spark:
• Use approved spark plug tester.
• Do not check for spark with spark plug removed.
NOTICE
Spark plugs have different heat ranges. It is important that
the correct spark plug is used, otherwise, engine damage
can occur. Replace the spark plug with the same type or
equivalent one.
Clean Spark Plug
Clean the spark plug with a wire brush and sturdy knife. Do
NOT use abrasives.
Check Spark Plug Gap
Use a spark plug feeler gauge (A, Figure 27) to check the
gap between the two electrodes. When the gap is correct, the
gauge will drag slightly as you pull it through the gap.
To adjust the spark plug gap, use a spark plug gauge and
gently bend the curved electrode. Make sure that you do not
touch the center electrode or the porcelain.
Install Spark Plug
Tighten the spark plug with your fingers, and then, tighten it
with a wrench as shown in Figure 28.
• 180 in-lbs (20 Nm), OR
• 1/2 turn when you install the original spark plug. 1/4 turn
when you install a new spark plug.
Pushing the Rider By Hand
WARNING
Unsafe Operation Hazard.
DO NOT disengage the transmissions and coast down
slopes. DO NOT use Roll Release to disengage the
transmissions unless machine motion can be controlled and
engine is off.
NOTICE
Do not tow rider. Towing the unit will cause transmission
damage. Do not use another vehicle to push or pull this
unit.
1. Disengage the PTO, lock the ground speed levers into
their START/PARK positions, turn the ignition OFF,
remove the key, and wait for all moving parts to stop.