Craftsman 12AE764Y099 Operator's Manual page 22

Pivot Points & Linkage
Lubricate all the pivot points on the drive system and lift linkage at
least once a season with light oil.
Rear Wheels
the rear wheels should be removed from the axles once a season.
Lubricate the axles and rim hubs well with an all-purpose grease
before reinstalling them.
Front Wheels
Each of the front wheel axles and casters is equipped with a grease
fitting. See Figure 18. Lubricate with a No. 2 multi-purpose grease
applied with a grease gun after every 50 hours of mower operation.
SERVICE AND MAINTENANCE
Figure 18
bLADE TIMING bELT
the cutting deck spindles are driven by a timing (cogged) belt,
assuring that the deck blades are always perpendicular to each other.
At least once a season, or after striking any foreign object, check the
timing belt as follows:
1. Remove the belt cover by removing the three screws and washers
which secure it to the frame. See Figure 19.
Do not operate mower without the belt cover installed. Failure to fol-
low this instruction could result in personal injury or property damage.
2. the top of each spindle pulley is marked with an arrow. See
Figure 20. the arrows should be perpendicular (at a 90˚ angle) to
each other.
22
WARNING
Figure 19
Figure 20