Maintenance
Checking for Bent Blades
W ARNING
A blade that is bent or dama ged could br eak apar t
and could criticall y injur e y ou or bystander s.
• Al w ays r eplace a bent or dama ged blade with
a new blade.
• Do not le or cr eate shar p notches in the
edges or surf aces of the blade.
1. R otate the blades until the ends face forw ard and
bac kw ard.
2. Measure from a lev el surface to the cutting edg e ,
position A , of the blades .
g000975
Figure 66
1. Measure here from blade
to hard surface
2. Position A
3. R otate the opposite ends of the blades forw ard.
4. Measure from a lev el surface to the cutting edg e of
the blades at the same position as in ste p 2 abo v e .
Note: T he difference betw een the dimensions
obtained in ste ps 2 and 3 m ust not ex ceed 3 mm
(1/8 inc h).
Note: If this dimension ex ceeds 3 mm (1/8 inc h),
re place the blade .
Removing the Blades
R e place the blades if they hit a solid object or if the
blade is out of balance or bent.
1. Place a wrenc h on the at of the blade retainer or
hold the blade end using a rag or thic kly padded
glo v e .
2. R emo v e the blade bolt, w asher , and blade from
the spindle shaft.
g376322
Figure 67
1. Blade retainer 3. W asher
2. Blade 4. Blade bolt
Sharpening the Blades
1. Use a le to shar pen the cutting edg e at both
ends of the blade .
Note: Maintain the original angle .
Note: T he blade retains its balance if the same
amount of material is remo v ed from both cutting
edg es .
g000552
Figure 68
1. Sharpen at original angle.
2. Chec k the balance of the blade b y putting it on a
blade balancer .
Note: If the blade sta ys in a horizontal position,
the blade is balanced and can be used. If the blade
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