Ariens 911179, 911175, 911173 warranty Check Mower Blade, Sharpen the Mower Blades

CHECK MOWER BLADE	DO NOT Sharpen to This Pattern
See Figure 11.
	1		2
Check blade mounting: blade must be secure
and bolt torqued to 37.5 – 50 lbf-ft (51 –
68 N•m) (bolt should fully compress lock
washer).
Check blade for nicks and dull cutting edges.	3
Sharpen if necessary.
Check blade for rounded or broken ends,
thinned metal or other damage. Replace if	Sharpen to This Pattern
necessary.
			2
CAUTION: Mower blades are
sharp and can cut you. Wrap the
blades or wear gloves, and use
extra caution when servicing
them.
To remove blade:		4	3
1. Stop engine, wait for all moving parts to				OT0792
stop, and disconnect spark plug wire.	DISCARD If More
2. Block blade to prevent rotation.	Than 1/2" (1.27 cm)
3. Remove bolt, lock washer, flat washer	1. Square Corner
and blade from shaft.
To install blade:	2.	Cutting Edge
1. Replace blade, flat washer, lock washer	3.	Air Lift
and bolt on shaft.	4.	Air Lift Erosion
2. Torque bolt to 37.5 – 50 lbf-ft (51 –			Figure 11
68 N•m) (bolt should fully compress lock
washer).	3. Check mower blade balance.

3. Connect spark plug wire.		Slide mower blade on an unthreaded
Sharpen the Mower Blades		bolt. A balanced blade should remain in
		a horizontal position. If either end of
CAUTION: DO NOT sharpen		mower blade moves downward, sharpen
		the heavy end until blade is balanced
mower blades while on unit. An
		(Figure 12).
imbalanced mower blade will
	4. Install mower blade on unit.
cause excessive vibration and
eventual damage to unit. Check	5. Torque bolt to 37.5 – 50 lbf-ft (51 – 68
mower blade balance before		N•m).
reinstalling blades.
NEVER weld or straighten bent
blades.
			1
1. Remove mower blade from unit.
Discard mower blade if:
• More than 1/2" (1.27 cm) of metal is
removed.			2
• Air lifts become eroded.
• Blade is bent or broken.
2. Sharpen mower blade by removing an
equal amount of material from each end
of mower blade. DO NOT change angle
of cutting edge or round the corner of the					OA0013
mower blade.	1.		Blade
	2.		Bolt
				Figure 12
EN - 18