Ariens Razor 911173, Operator'S Manual

Page: 21 / 32

EN - 19
CHECK MOWER BLADE
Check blades for wear. Replace or sharpen
as needed.
Remove Blade
1. Stop engine, wait for all moving parts to
stop and for hot parts to cool.
2. Place unit in service position. See
Service Position on page 17.
3. Block blade to prevent rotation.
4. Remove hardware retaining and remove
blade. Retain hardware. See Figure 25.
Sharpen Blade
See Figure 26.
1. Remove mower blade. Discard blade if:
• More than 1.3 cm (1/2") of metal is
gone.
• Air lifts are eroded.
• Blade is bent or broken.
2. File or grind an equal amount of metal
from each cutting edge of blade until
sharp.
IMPORTANT: DO NOT change angle of
cutting edge or round the corner of blade.
3. Slide an unthreaded bolt through blade
center to check balance. Hold the bolt
level. If blade does not remain horizontal,
sharpen the heavy end until blade is
balanced. See Figure 27.
4. Reinstall mower blade. See Install Blade
on page 20.
CAUTION: AVOID INJURY. Use
sturdy gloves or padding to protect
hands when handling mower
blades.
CAUTION: AVOID INJURY. DO
NOT sharpen blade while
attached to unit.
Figure 25
CAUTION: An unbalanced blade
causes excessive vibration and
eventual damage to unit. Balance
blade before reinstalling.
NEVER weld or straighten blade.
Figure 26
1. Square Corner
2. Cutting Edge
3. Air Lift
4. Air Lift Erosion
Sharpen to this pattern.
DO NOT sharpen to this
pattern.
DISCARD if more than 1.3 cm (1/2").
1
2
2
4
3
Figure 27