Exmark 312 Lawn Mower User Manual


 
Maintenance
1. Stop engine, wait for all moving parts to stop, and
remove key or spark plug wire(s). Engage parking
brake.
2. See the Engine Owner's Manual for cleaning
instructions.
Change Engine Oil
Service Interval: After the rst 5 hours
Every 100 hours (May
need more often under
severe conditions.)
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Drain oil while engine is warm from operation.
3. The oil drain hose assembly is located on the left
side of the engine.
Place pan under machine to catch oil. Remove
plug from end of drain hose. Allow oil to drain
and replace oil drain plug. Torque plug to 20-24
ft-lb.
4. Replace the oil lter per the Engine Owner's
Manual. Clean around oil lter and unscrew lter
to remove. Before the new lter is installed,
apply a thin coating of Exmark 4–Cycle Premium
Engine Oil on the surface of the rubber seal.
Turn lter clockwise until rubber seal contacts
the lter adapter, then tighten lter an additional
2/3 to 3/4 turn.
5. Clean around oil ll cap and remove cap. Fill to
specied capacity and replace cap.
6. Use oil recommended in the Check Engine Oil
Level section. Do Not overll. Start the engine
and check for leaks. Stop engine and recheck oil
level.
Check Hydraulic Oil Level
Service Interval: Every 40 hours
1. Stop engine and wait for all moving parts to stop,
and remove key. Engage parking brake.
2. Clean area around hydraulic reservoir cap and
remove cap. Oil level should be to the top of the
bafe inside the tank. If not, add oil. Use Exmark
Premium Hydro Oil. Replace hydraulic reservoir
cap and tighten until snug. Do Not overtighten.
Note: The bafe is labeled “HOT” and
“COLD”. The oil level varies with the
temperature of the oil. The “HOT” level shows
the level of oil when it is at 225°F (107°C). The
“COLD” level shows the level of the oil when
it is at 75°F (24°C). Fill to the appropriate level
depending upon the temperature of the oil. For
example: If the oil is about 150°F (65°C), ll to
halfway between the “HOT” and “COLD” levels.
If the oil is at room temperature (about 75°F
(24°C)), ll only to the “COLD” level.
Check Tire Pressures
Service Interval: Every 40 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Check tire pressure in drive tires.
3. Inate drive tires to 12–16 psi (83–110 kPa).
4. Inate tires to pressures stated above. Measure
the circumference of each drive tire. Adjust tire
pressures within the above range to try to make
tire circumferences match as closely as possible.
5. Semi-pneumatic caster tires do not need to be
inated.
Check Condition Of Belts
Service Interval: Every 40 hours
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Remove the mower deck belt shield to check
mower blade drive belt condition.
3. Look under engine deck to check the pump drive
belt condition.
4. Check all idler arms to be sure they pivot freely.
Disassemble, clean and grease pivot bushings if
necessary.
Lubricate Grease Fittings
Note: See chart for service intervals.
1. Stop engine, wait for all moving parts to stop, and
remove key. Engage parking brake.
2. Lubricate ttings with NGLI grade #2
multi-purpose gun grease.
Refer to the following chart for tting locations
and lubrication schedule.
Lubrication Chart
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