Snapper R196019B User Manual
13
Section 4 - ADJUSTMENTS & REPAIR
WARNING
DO NOT attempt any maintenance, adjustments or
service with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secure
away from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for
all components to cool. Wear heavy leather gloves
when handling or working around cutting blades.
Blades are extremely sharp and can cause severe
injury.
service with engine and blade running. STOP engine
and blade. Disconnect spark plug wire and secure
away from spark plug. Engine and components are
HOT. Avoid serious burns, allow sufficient time for
all components to cool. Wear heavy leather gloves
when handling or working around cutting blades.
Blades are extremely sharp and can cause severe
injury.
4.1 MOWER BLADE REPLACEMENT
4.1.1. STANDARD BLADE WEAR LIMIT
1. Inspect blade frequently for signs of excessive
wear or damage. See Figure 4.1.
1. Inspect blade frequently for signs of excessive
wear or damage. See Figure 4.1.
FIGURE 4.1
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.
excessive wear or damage. Refer to Section
“MOWER BLADE REPLACEMENT” for proper blade
inspection and service procedures.
4.1.2. BLADE SHARPENING
1. Disconnect spark plug wire and secure end away
from plug.
IMPORTANT: DO NOT tip machine with carburetor or
spark plug down. Oil from crankcase will saturate the air
filter and cause the engine to be hard to start or not start
at all. If contamination does occur, the air filter will have to
be replaced.
spark plug down. Oil from crankcase will saturate the air
filter and cause the engine to be hard to start or not start
at all. If contamination does occur, the air filter will have to
be replaced.
2. Tilt mower up on its rear wheels.
3. Remove blade. See Figure 4.2.
3. Remove blade. See Figure 4.2.
FIGURE 4.2
4. Sharpen blade on a grinding wheel at an angle of
22 to 28 degrees. DO NOT sharpen blade beyond
original cutting edge. See Figure 4.3.
22 to 28 degrees. DO NOT sharpen blade beyond
original cutting edge. See Figure 4.3.
FIGURE 4.3
5. Check blade for balance. If necessary, correct
balance by grinding heavy end of blade.
6. Reinstall blade. See Figure 3.2. Check torque of
blade retaining cap screw. Recommended torque
should be 30 to 40 ft. lbs.
WEAR LIMIT
(NOTCH STARTS)
(NOTCH STARTS)
DANGEROUS CONDITION !
DO NOT USE ON MOWER !
REPLACE WITH NEW BLADE.
DO NOT USE ON MOWER !
REPLACE WITH NEW BLADE.
NEW BLADE
BLADE
REMOVE BLADE
RETAINING SCREW
RETAINING SCREW
BLADE TIP
ORIGINAL
CUTTING EDGE
CUTTING EDGE
NOTE: DO NOT
SHARPEN BEYOND
ORIGINAL
CUTTING EDGE.
SHARPEN BEYOND
ORIGINAL
CUTTING EDGE.
22-28º
END
VIEW OF
BLADE
VIEW OF
BLADE