Section 4 - Maintenance Instructions; Change Engine Oil; Check Mower Blade - Snapper NZM21521KWV Safety Instructions & Operator's Manual

Section 4 - MAINTENANCE
4.1 INTRODUCTION
To retain the quality of the SNAPPER mower, use
genuine SNAPPER replacement parts only. Contact
a local SNAPPER dealer for parts and service
assistance. For the correct part or information for a
particular SNAPPER mower, always mention the
model and serial number. SNAPPER recommends
returning the mower to an authorized SNAPPER
dealer annually for inspection and addition of any
new devices, which might upgrade the safety of the
mower. For the nearest SNAPPER dealer in your
area, check the yellow pages under the heading
LAWN MOWERS. For engine parts and service,
look for the engine manufacturer's dealers under the
heading, ENGINES - gasoline.
4.2 SERVICE - AFTER FIRST 5 HOURS
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine running. STOP engine. STOP
blades. Set brake. Remove key. Remove spark plug
wires and secure away from spark plugs. Engine
and components are HOT. Avoid serious burns;
allow sufficient time for all parts to cool.

4.2.1. CHANGE ENGINE OIL

Change engine oil as follows:
1. Place a 4 quart minimum capacity container
under the end of the oil drain.
2. Rotate counter clockwise and pull out to open
the drain plug. See Figure 4.1.
ROTATE PLUG COUNTER CLOCKWISE
THEN PULL OUT TO DRAIN OIL
FIGURE 4.1
3. After all the oil has drained, close the drain by
pushing in and rotating clockwise to close. Wipe up
any oil that may have spilled. Dispose of drained oil
properly. See Figure 4.1.
4. Fill engine crankcase with new oil. Refer to your
engine owner's manual for oil specifications.
5. Change engine oil filter at every oil change.
Refer to your engine owner's manual for service
instructions.

4.2.2. CHECK MOWER BLADE

1. Stop Engine. Remove key. Disconnect spark
plug wire(s) and secure away from spark plug(s).
2. Engage parking brake.
3. Use a hydraulic floor jack or hoist to raise
machine high enough to gain access to the
underside of deck. Secure machine with safety
blocks.
WARNING
Wear heavy leather gloves when handling or
working around cutting blades. Blades are extremely
sharp and can cause severe injury. DO NOT use a
cutting blade that shows signs of excessive wear or
damage. Refer to Section
REPLACEMENT" for proper blade inspection and
service procedures.
4. Check torque of blade mounting bolts. As
necessary, torque to 70 to 80 ft. lbs. See Figure 4.2.
5. Check blade for sharpness, wear and damage.
Refer to Section "BLADE WEAR LIMITS".
6. Check blade for straightness.
14
"MOWER BLADE
CHECK BLADE
MOUNTING BOLTS -
TORQUE SHOULD BE
70 TO 80 FT. LBS.
FIGURE 4.2