Ariens Promaster PM144Z Owner's/Operator's Manual page 18

1. Sharpen the Mower Blades
,
3.
4.
5.
Clean around dipstick cap and dipstick. Remove
dipstick.
Place container under oil filter to catch oil.
Remove oil filter.
Allow tank to drain.
Lubricate rubber gasket on new oil filter with clean
hydraulic oil.
6. Spin new oil filter onto filter housing until it makes
contact. Tighten oil filter another 1/2 turn.
7. Add new oil to the oil tank. It will take about 1.5 quarts
(1.4 liters). Use Mobil 1 Extended Performance 15W50
Synthetic Oil or equivalent for best component life
(Ariens pin 00057100).
8. Check hydraulic oil level mark on cap/dipstick.
9. Properly dispose of waste oil.
MOWER BLADES
Remove
,_ CAUTION: Use sturdy gloves or padding to protect
hands when working with mower blades.
1. Turn the engine off. Remove the ignition key. Remove
the ignition wire from the spark plugs.
2. Block mower blades to prevent rotation.
3. Remove the bolts, washers, and blades from the
spindle shafts.
Figure 7
Replace
1. Replace the blades, washers and bolts on the spindle
shafts.
2. Tighten the bolts to a torque of 115-125 Ibf-ft
(156-169 N-m).
3. Replace the ignition wire on the spark plugs.
CAUTION: DO NOT sharpen mower blades while
on unit. An unbalanced mower blade will cause
excessive vibration and eventual damage to unit.
Check mower blade balance before reinstalling
blades.
NEVER weld or straighten bent blades.
1. Remove mower blade from unit.
Discard mower blade if:
• More than 1/2 in. (1.27 cm) of metal is removed.
• 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
mower blade.
3. Check mower blade balance.
Slide mower blade on an unthreaded bolt. A balanced
blade should remain in a horizontal position. If either
end of mower blade moves downward, sharpen the
heavy end until blade is balanced.
4. Install mower blade(s) on unit.
5. Tighten the bolts to a torque of 115-125 Ibf-ft
(156-169 N•m).
DO NOT Sharpen to This Pattern
DISCARD if More
Than 1/2 in. (1.27 cm)
Sharpen to This Pattern
1. Cutting Edge
2. Square Corner
3. Air Lift Erosion
4. Air Lift
Figure 8
OT0792
GB- 18