Cub Cadet Commercial 1536H Operator's And Service Manual page 16

d. Loosen the two belt guides under the engine deck and rotate them out of the way.
e. Slip the long blade drive belt off of the pulleys.
f. Loosen the idler pull rod which holds the idler pulley tight against the short blade drive belt. See
Figure 7.
g. Remove the short blade drive belt from the pulleys.
h. Place a new short blade drive belt back on the pulleys and tighten the idler pull rod to hold the idler
pulley tight against the belt.
i. Place a new long blade drive belt through the belt guide and loop it around the engine pulley and
then around the two deck pulleys. The belt's back side should ride on the idler pulley.
j. Replace the cap screw and nut in the idler pulley arm. Readjust and tighten the two belt guides
under the engine deck.
k. The idler pulleys should be adjusted so that when the blade clutch is engaged, a ten-pound pull
between two pulleys deflects either belt about 1/2". Do not overtighten these belts. The blade clutch
should engage with only moderate force.
l. Replace the deck cover.
Figure 7
16