Maintenance - MTD 679 cc EFI OHV Operator's Manual

Replace Oil Filter
This engine is equipped with a spin-on oil filter
that should be replaced each time an oil change
is performed, every season or 50 hours. Refer to
Figure 6-2.
Oil Filter
Figure 6-2
1. Drain oil. See oil drain section.
2. Remove oil filter. Dispose of old oil filter
properly.
3. Lube gasket of new oil filter with clean oil.
4. Install and turn oil filter by hand until the
gasket comes in contact with the sealing
surface of the crankcase cover, then
tighten the oil filter, 10-12 Nm (88.5-106.2
in-lb), 1/2-3/4 turn.
5. Add oil. See add oil section.
6. Make sure dipstick is installed.
7. Start and run engine. Check for leaks.
8. Stop engine. Wait a few minutes and
check the oil level. See checking oil level
section.
9. Install and tighten dipstick.
Add Oil
IMPORTANT: Be sure to check engine on a level
surface with the engine stopped.
1. Wipe around dipstick cap and tube with
a clean cloth to remove any debris. See
Figure 6-3.
Figure 6-3
2. Remove dipstick and wipe clean with a
cloth.
3. Pour oil into the dipstick tube. Do not
over fill. With an oil filter change the high
level amount of oil for this engine is 1900
ml (64.25 fl. oz.).
4. Install dipstick and turn to locked
position before starting engine.
5. Start engine. Allow to run for a few
seconds and then shut down the engine.
6. Check the oil level. See Checking Oil Level
section.
Air Filter Service
Paper filters cannot be cleaned and should be
replaced every 100 operating hours; more often
if used in extremely dusty conditions.
WARNING
: Never use gasoline or
low flash point solvents for cleaning
the air filter element. A fire or explosion
could result.
IMPORTANT: Never run the engine
without the air filter. Rapid engine wear will
result.
1. Unscrew a 1/4 turn to unlock the thumb
screws.
2. Remove the air filter cover. See Figure
6-4.
1
Thumb
Air Filter Cover
Screw
Figure 6-4
3. Pull up on an angle and then forward to
remove the air filter. See Figure 6-5.
Figure 6-5
4. Remove the foam pre-filter from around
the paper air filter. See Figure 6-6.
Replace paper element when dirty or
damaged. Clean foam element or replace
when damaged.
NOTE: The foam element cannot be
purchased separately. Air filter is only
sold as an assembly.
Air FIlter
5. To clean foam element, wash in a mild
liquid detergent and water. Squeeze
or press the foam element to rinse out
dirt and water. Do not twist; this could
damage or tear the foam element. Allow
to dry thoroughly before using. DO NOT
oil the foam element.
6. Attach the new air filter with foam
element, aligning the hole in the air filter
with the intake manifold. See Figure 6-7.
2
Intake Manifold
7. Attach the air filter cover. See Figure 6-8.
Turn thumb screws clockwise a 1/4 turn
until snug. Check for any misalignment.
S
ection
Pre-Filter
Figure 6-6
Figure 6-7
6 — M
aintenance
9