Transmission Belt Replacement - Snapper 20 Série Instructions De Sécurité Et Mode D'emploi

Maintenance (Continued)
!
WARNING
DO NOT attempt any maintenance, adjustments or service
with engine and blade running. STOP engine and blade.
Disconnect spark plug wire and secure away from spark
plug. Engine and components are HOT. Avoid serious
burns, allow sufficient time for all components to cool.
Engine Drive Belt Replacement (Stretch Type
Belts - Continued)
IMPORTANT: Drain the fuel tank before tipping the mower.
DO NOT tip the machine with the carburetor or spark plug
down. Oil from the crankcase will saturate the air filter and
cause the engine to be hard to start or not start at all. If
contamination does occur, the air filter will have to be
replaced.
3. Remove the driven disc. Refer to the Section entitled
"Driven Disc Replacement" for driven disc removal
procedure.
4. Drain the fuel tank before tipping the mower. Do not tilt
the mower with the spark plug or carburetor down. Tilt
the mower up on its rear wheels and remove the blade
and blade hub. Assistance from another person may be
necessary to hold the mower in the tilted position.
5. Hold the slotted end of the drive disc bolt (B, Figure 33)
with a screwdriver and remove the nut (G) and internal
tooth lock washer (F).
6. Remove the belt cover, located under the deck.
7. Lift the drive disc (A) up and remove the worn belt.
8. Loop one end of the new belt over the engine pulley and
insert the other end through the slot in the deck.
9. Loop the belt around the pulley on the bottom of the
drive disc.
10. Reinstall the drive disc and retaining hardware.
IMPORTANT: 1) The square shoulder of the drive disc bolt
must fit into the square hole of the bushing. 2) The square
end of bushing must fit into the bracket slot.
11. Reinstall the belt cover and tighten the bolts securely.
12. Reinstall the blade hub and cutter blade. Recommended
torque for the blade cap screw is 40 ft. lbs.
18
!
B
C
E
G
Figure 33: Removing the drive disc
Transmission Poly-V Belt Replacement
1. Remove the driven disc. Refer to the Section entitled
"Replacing Driven Disc Rubber Ring".
2. Note the routing of the old belt around the three pulleys
before removing it.
3. Place the new Poly-V Belt (A, Figure 34) over the end of
the hex shaft (B) and onto the drive pulley (C).
4. Work the belt onto the top of the idler pulley (D).
5. Twist the belt sideways and pull it upward between the
differential bracket (E) and driven pulley (F) and then
down into the pulley groove. Make sure the Poly-V Belt
is above the belt guide (G).
C
B
G
Figure 34: Poly-v belt routing
D
F
E
A
D
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A
F