Ariens 51121600 Instruction Sheet Download Page 6

08401009 • 2/15 • Page 6 of 8

5. Install square key (item 7) and wave washer 

(item 8).

6. Install belt channel guides and belt crank guide 

(item 10) using four 12-24 x 1/4" screws (item 11). 

IMPORTANT: 

Do not use original screws. Do not over 

tighten.

7. Replace blade adapter, blade, flat washer, lock 

washer and bolt on shaft and torque to 37.5 – 50 
lbf-ft (51 – 68 N-m).

NOTICE: 

Bolt must fully compress lock washer.

8. Connect the wheel drive cable spring to the 

transmission bracket.

9. Adjust wheel drive cable (see 

Adjust Wheel Drive 

Control

 on page 8).

10. Connect spark plug wire.

REASSEMBLY

Models 911176, 177

See Figure 12

1. Route belt (item 9) through belt channel. 

2. Route belt around transmission pulley and reinstall 

transmission bracket and hardware.

3. Rotate transmission back into position.

4. Loop belt over crankshaft end.

5. Model 911176 only: Install spacer (item 6) onto 

crankshaft.

IMPORTANT: 

Install new engine pulley (item 2) with thick 

side of pulley on top. See Figure 12 for orientation.

6. Install key (item 7) and wave washer (item 8).

7. Install belt channel guides and belt crank guide 

(item 10) using four 12-24 x 1/4" screws (item 11)

IMPORTANT: 

Do not use original screws. Do not over 

tighten.

8. Reinstall BBC baffle and tighten hardware.

9. Install washers and BBC assembly on engine shaft. 

Ensure that key in BBC is aligned with keyway on 
engine shaft. See Figure 12.

10. Reinstall BBC spring.

11. Using pry bar, rotate BBC assembly clockwise until 

anti-rotation arm is aligned with shoulder bolt 
bracket. Install bolt and fully tighten. See Figure 13.

12. Using a 1/4" (6 mm) pry bar or similar into the clutch 

actuating lever. Pry lever to the right (clockwise).

 Figure 11

Item 6

(911174, 178, 375, 379 Only)

Item 9

Item 1

Item 7

Item 11

Item 10

Item 8

 Figure 12

Item 6

(911176 Only)

Item 9

Item 2

Item 7

Item 11

Item 8

Item 10

06400926 Washer

911176: Qty = 2

911177: Qty = 1

Summary of Contents for 51121600

Page 1: ...nderstand and follow all safety practices in Owner Operator Manual before beginning Item Description Qty Ariens P N 1 Ground Drive Pulley 51121600 51121700 1 07343800 2 Ground Drive Pulley 51121800 51...

Page 2: ...es Discard screws 7 Pull belt over end of crankshaft to allow belt to slide out through belt channel 8 Rotate transmission backward to remove hardware then adjust to loosen belt 9 Remove belt and pull...

Page 3: ...lever 5 While holding anti rotation arm in position with pry bar remove anti rotation shoulder bolt Gradually release the spring tension and allow the anti rotation arm to rotate counter clockwise 6 R...

Page 4: ...allow belt to slide out through belt channel 12 Rotate transmission backward to remove hardware then adjust to loosen belt 13 Remove belt and pull through the belt channel See Figure 8 Figure 7 1 Cra...

Page 5: ...h this hole Belt Channel Plug 1 Install metal plug item 4 using two 10 24 x 3 8 tapping screws item 5 Hold plug in position from inside of channel while securing screws See Figure 10 Dome Plug 2 Inser...

Page 6: ...176 only Install spacer item 6 onto crankshaft IMPORTANT Install new engine pulley item 2 with thick side of pulley on top See Figure 12 for orientation 6 Install key item 7 and wave washer item 8 7 I...

Page 7: ...light amount of slack and hand tighten front adjustment nut against the cable bracket Tighten the rear adjustment nut See Figure 14 17 Replace blade and two bolts on blade brake clutch Torque bolts to...

Page 8: ...Make sure the return spring is properly connected to transmission bracket 4 On the handlebar loosen cable nuts away from bracket See Figure 29 5 Move the wheel drive cable adjuster up or down the han...

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