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Section 4 - REPAIR & ADJUSTMENTS
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.
2. Replace the blade if it is badly chipped, bent,
noticeably out of balance or has cracks or notch in
either tip. See Figure 4.1 & 4.1A. Replace with new
blade.
WARNING
DO NOT use a cutting blade that shows signs of I
excessive wear or damage. Refer to Section l
"MOWER BLADE REPLACEMENT" for proper bladel
inspection and service procedures.
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.
4.1.2. BLADE SHARPENING
1. Disconnect spark plug wire and secure end away
from plug.
FNEWBLADE IMPORTANT: Drain fuel tank before tipping mower.
""--L DO NOT tip machine with carburetor or spark plug down.
I _ WEARLIMIT Oil from crankcase will saturate the air filter and cause the
-'-._J/ C---{NOTCHSTARTS) engine to be hard to start or not start at all. If
._ /_" | contamination does occur, the air filter will have to be
_ replaced.
DANGEROUS CONDITION !
"_--_.._dJ DO NOTUSEONMOWER! 2. Tilt mower up on its rear wheels. Do not tilt
,_,_ _ [--REPLACE WITH NEW mower with spark plug or carburetor down.
..._ ..... 3. Remove blade. See Figure 4.3:...........................................
-t'----.. i MAKESORETHATi
"I"_==_....,._ i BLADE HUB IS i
! SEATED :
,_,_...,__._.._ _ BLADE i BETWEEN
HUB " FLANGES
FIGURE 4,1 I'_'_1 "............................................
4.1.1.A. NINJA BLADE WEAR LIMIT
1. Inspect blade frequently for signs of excessive wear
or damage. See Figure 4.2.
NEW BLADE
WEAR LIMIT.
CRACKS OR
NOTCHES
BEGIN TO
APPEAR ON TIP
FIGURE 4.3
FIGURE 4.2
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