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BigDog Alpha - Page 17

BigDog Alpha
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119293 4-5 REV B
for easier access upon re-assembly.
6. Remove the deck drive belt from the electric clutch
pulley located on the engine shaft. Figure 4-14
NOTE: Do not remove the deck drive belt from the deck
spindle pulleys. It will only need to be removed from the
electric clutch pulley at the rear of the mower.
7. Locate the tension idler spring. Securely clamp locking
pliers onto the spring at the end located next to the idler
arm. Figure 4-10
8. Release the transaxle drive belt tension, using the locking
pliers, to remove the tension spring from the idler arm.
Swing the idler arm out of the way. Figure 4-14
9. Remove the transaxle drive belt from the transaxle drive
pulleys and the engine pulley. Figure 4-14
10. Replace the transaxle drive belt and route it around the
11. Make sure the transaxle drive belt is routed correctly
around the tension idler before attaching the tension
spring. Using the locking pliers, re-attach the tension
spring to the idler arm to re-tension the transaxle drive
belt. Remove the locking pliers from the tension spring.
Figure 4-14
12. Reroute the deck drive belt around the electric clutch
pulley. Make certain the belt is routed properly around
the spindle pulleys and stationary idler pulley(s). Using
the tension spring hook (604462), re-tension the deck
drive belt by pulling on the deck belt idler spring and
hooking it in the spring mount on the deck. Figure 4-11,
Figure 4-12, Figure 4-13 & Figure 4-14
13. Re-install the deck covers.
Figure 4-12
WARNING
Exercise caution when releasing spring tension from the
belt idler.
Figure 4-13
Deck
cover
Deck
cover
Spring mount
Tensioning
Idler spring
Tension idler
spring
Tension spring
hook (604462)
Spring
mount
Figure 4-14
Figure 4-15
WARNING
Never operate the mower without the deck covers in
place.
Transaxle
drive belt
Idler arm
Electric
clutch
pulley
Deck drive
belt
Transaxle
drive pulley
Transaxle
drive pulley
Engine pulley
Transaxle
drive belt
Transaxle
drive pulley
Transaxle
drive pulley
Tension idler
Viewed from top of the mower

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