Snapper SZT18336BVE User Manual

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Section 3 - MAINTENANCE 
 
3.1 INTRODUCTION 
To retain the quality of the SCRAMBLER, 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 mower, 
always mention the model and serial number.  
 
3.2  SERVICE - AFTER FIRST 5 HOURS 
 
WARNING 
DO NOT attempt any adjustments, maintenance, 
service or repairs with the engine running. STOP 
engine. STOP blade. Engage parking brake. Remove 
key. Remove spark plug wire from spark plug and 
secure away from plug. Engine and components are 
HOT. Avoid serious burns, allow all parts to cool 
before working on machine. Fuel Filler Cap and vent 
must be closed securely to prevent fuel spillage. 
 
3.2.1.  CHANGE ENGINE OIL 
1.  
Place bricks or wooden blocks under the front 
wheels to lower rear of engine. 
2.  Place a 4 quart minimum capacity container 
under the end of the oil drain. 
3.  Loosen or remove oil fill cap on engine. 
4.  Install the drain hose (supplied in hardware bag) 
onto drain plug nipple and place hose into drain 
container. 
5.  Rotate drain plug counter clockwise and pull out 
to open and allow oil to drain out. See Figure 3.1. 
 
 
FIGURE 3.1 
 
6. 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 3.1. 
7.  Change oil filter at every oil change.  Refer to your 
engine owner’s manual for service instructions. 
8.  Fill engine crankcase with new oil.  Refer to your 
engine owner’s manual for oil specifications. 
 
3.2.2.  CHECK MOWER BLADE 
1.
 Close vent on fuel cap and make sure cap is 
tight.  See Figure 2.2. 
2.  Engage parking brake. 
3.  Turn key to “STOP” position and remove key from 
ignition switch.  Remove spark plug wires. 
 
WARNING 
Wear heavy leather gloves when handling or working 
around cutting blades. Blades are extremely sharp and 
can cause severe injury.  
 
4.  Raise cutting deck to highest setting. 
5.
  With a floor jack, carefully raise front of machine to 
gain easier access to under deck.  Block machine 
securely. 
6.  Check torque of blade mounting bolts. Torque to: 
33” Deck - 30 to 40 ft. lbs.  
38” Deck - 80 to 90 ft. lbs. See Figure 3.2. 
7. Check blade for sharpness, wear and damage. 
Refer to Section “BLADE WEAR LIMITS”. 
 
FIGURE 3.2 
8.  Check blade for straightness.  Refer to Section 
ADJUSTMENTS AND REPAIR – CHECKING 
MOWER BLADE STRAIGHTNESS 
 
WARNING 
DO NOT use a cutting blade that shows signs of 
excessive wear or damage. Refer to Section 
“MOWER BLADE REPLACEMENT” for proper blade 
inspection and service procedures.  
INSTALL HOSE 
ONTO OIL DRAIN 
NIPPLE 
ROTATE 1/4 TURN 
COUNTERCLOCKWISE 
AND PULL OUT TO DRAIN 
ENGINE OIL 
OIL DRAIN 
TORQUE BLADE MOUNTING 
BOLTS TO 30 TO 40 FT. LBS. 
SINGLE BLADE DECK 
TORQUE BLADE MOUNTING 
BOLTS TO 80 TO 90 FT. LBS. 
TWIN BLADE DECK