Mower Blades - Ariens 988811 Owner's Manual

2. Remove deck cover.
3. Turn the idler spring adjusting nut to
relieve tension from the idler spring.
4. Remove belt from deck sheaves and
mower clutch sheave.
5. Install new belt.
6. Tighten the adjusting nut to tension the
belt. Tighten the nut until the idler spring
compresses to 2 in. ± 1/8 in. (5.1cm ±
.32 cm). See Figure 16.
7. Replace deck cover and secure.
48" BELT REPLACEMENT
Deck Belt
1. Stop engine, remove key and wait for all
hot parts to cool.
2. Remove deck cover.
3. Turn the deck belt idler spring adjusting
nut to relieve tension from the idler
spring.
4. Remove deck belt from deck sheaves.
5. Install new deck belt.
6. Tighten the adjusting nut to tension the
belt. Tighten the nut until the idler spring
compresses to 2 in. ± 1/8 in. (5.1cm ±
.32 cm). See Figure 17.
7. Replace deck cover.
Mower Drive Belt
NOTE: Deck belt must be removed before
removing the mower drive belt.
1. Stop engine, remove key and wait for all
hot parts to cool.
2. Remove deck cover.
3. Remove deck belt.
4. Turn the mower drive belt idler spring
adjusting nut to relieve tension from the
idler spring (Figure 17).
5. Remove mower drive belt from deck
sheaves and mower clutch sheave.
6. Install new mower drive belt on deck
sheaves and mower clutch sheave.
7. Tighten the adjusting nut to tension the
belt. Tighten the nut until the idler spring
compresses to 2 in. ± 1/8 in. (5.1cm ±
.32 cm). See Figure 17.
8. Replace deck belt.
9. Replace deck cover and secure.
NOTE: Make sure wing knobs do not
interfere with cutting height adjustments.
1
7
3
6
8
1. Mower
Clutch
Sheave
2. Mower Drive
Belt Idler
3. Deck Sheave
4. Mower Drive
Belt Idler
Spring

MOWER BLADES

NOTE: If mower is used under sandy soil
conditions, replace blades when air lifts
become eroded through at ends (Figure 18).
DO NOT sharpen to this pattern
Sharpen to this pattern
DISCARD if more than
1/2 in. (1.27 cm)
1. Cutting Edge
GB - 26
2
5
4
3
5. Mower Drive
Belt
6. Deck Belt
7. Deck Belt
Idler Spring
8. Deck Belt
Idler
Figure 17
2
2. Air Lift
Erosion
Figure 18
3
1
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