Mower Blade Stop Time; Change The Engine Oil; Air Filter Assembly (Cartridge With Pre-Cleaner); Check The Spark Plugs - Snapper SPX310 Operator's Manual

component. If there is any doubt about the cause of the
problem, see your dealer. If you need to replace the battery,
follow the steps under Clean the Battery and Cables.
To charge the battery, follow the instructions provided by the
battery charger manufacturer as well as all warnings included
in the safety rules sections of this book. Charge the battery
until fully charged. Do not charge at a rate higher than 10
amps.

Mower Blade Stop Time

WARNING
If the mower blade does not come to a complete stop within
5 seconds, the clutch must be adjusted. Do not operate the
machine until the correct adjustment has been performed by
an Briggs & Stratton Authorized Service Dealer.
The mower blades and mower drive belt must stop within
five seconds after the electric Power Take-Off (PTO) switch
turns OFF. If the mower drive belt does not stop within five
seconds, see a Briggs & Stratton Authorized Service Dealer
for repairs.

Change the Engine Oil

1. Run engine until warm.
2. Put the rider on a level surface. Refer to Figure 8.
3. Stop the engine. Turn the key (A, Figure 8) to the OFF
position, and then remove it.
4. Clean the oil fill and oil filter areas of debris.
5. Remove the dipstick (B).
6. Disconnect the oil drain hose (A, Figure 9).
7. Carefully remove the cap (B) and lower the hose into an
approved container (C).
8. After the oil has drained, install cap tightly, then attach the
hose to the side of the engine.
9. Remove the oil filter (B, Figure 10) and discard.
10. Lightly lubricate the oil filter gasket (A) with clean oil.
11. Install the oil filter by hand until the gasket touches the oil
filter adapter (C). Tighten the oil filter 1/2 to 3/4 turns.
12. Add oil. See Check and Add Engine Oil section.
Air Filter Assembly (Cartridge with pre-
cleaner)
WARNING
Never start or run the engine with the air cleaner assembly
or air filter removed as it is a fire hazard.
NOTICE
Do not use pressurized air or solvents to clean the filter.
Pressurized air can damage the filter and solvents will
dissolve the filter.
1. Loosen the fasteners (A, Figure 11) and remove the
cover (B).
2. Remove the air cleaner assembly (C) and disassemble.
3. Clean up any possible debris that might get into the
carburetor throat (D).
4. Remove the pre-cleaner from the air filter.
5. To loosen debris, gently tap the air filter on a hard
surface. If the air filter is excessively dirty, replace with a
new air filter.
6. Wash the pre-cleaner in liquid detergent and water. Then
allow it to thoroughly air dry. Do not oil the pre-cleaner.
7. Assemble the dry pre-cleaner to the air filter.
8. Install the air filter assembly.
9. Install the cover and secure the fasteners.

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 with wire brush and sturdy knife. Do NOT use
abrasives.
Check Spark Plug Gap
Use a spark plug feeler gauge (A, Figure 12) 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.
If necessary, use the spark plug gauge to adjust the gap by
gently bending the curved electrode without touching the
center electrode or the porcelain.
Install Spark Plug
Tighten with your fingers, then tighten with a wrench as
shown in Figure 13.
• 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 Tractor by Hand

1. Disengage the Power-Take-Off switch (D, Figure 3).
2. Turn the engine OFF.
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