WC68 Operator’s Manual
BLADE SHARPENING
The wood chipper blades will dull, making chipping difficult and cause your tractor to labour. It
is recommended to sharpen the blades every 25-50 hours of operation. The WC68 wood
chipper uses four (4) hardened steel blades. The blades are reversible and can be sharpened
on both sides. Follow the below steps to sharpen the blades.
1. Follow the steps from the previous section,
"Replacing Blades"
, to safely remove the
blades from the flywheel.
2. Hand-grind the angled edges of the blade at 33° (see diagram below) using a whetstone
or have them sharpened by a professional. A pedestal style bench grinder will likely
yield poor results if not used properly. If sharpened quickly or aggressively on a bench
grinder, the blade edge can get too hot and change colour, thus removing the heat
treating-properties from the steel. Use short grinding times and cool frequently with
water. Remove an equal and consistent amount of material from each blade to maintain
proper balance when reassembled to the flywheel.
3. Reinstall the sharpened blades on the flywheel and torque the M10 X 35 mm flat head
bolts to 40-45 ft•lb (54-60 N•m). Always replace the lock nuts with new hardware when
changing or reversing the blades.
4. Once the blades have been sharpened, proceed to the next section,
"Setting the Bed
Plate Gap"
, to properly set the spacing between the newly sharpened blades and the
bed plate.
WC68-MY2019: Rev A
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27-Sep-2018
Blade Profile
33°
33°