Service Manual

MOWER DECKS
7 - 16 Mid-Size Walk Behind Service Manual
12. Disengage the blade control (PTO) lever.
Note: If the assist arm does not contact the front stop
on the mower deck (Figure 184), adjust the clevis to
bring the bell crank closer to the transmission output
shaft (Figure 183).
Figure 184
m-4731-4
13. Check the belt guide under the engine frame for
proper adjustment (Figure 184).
Note: The distance between the belt guide and the
mower belt should be 1-3/8 in. (35mm) when you
engage the mower belt (Figure 185). Adjust the mower
belt as necessary. The disengaged belt should not drag
or fall off the pulley when the guides are properly
adjusted.
Figure 185
beltguide
Adjusting Mower Belt Tension
(Fixed Deck) - All
Service Interval/Specification
Check belt tension after the first hour of operation and
at least twice during the first 24 hours of operation.
Belt must be tight enough to not slip
during heavy loads while cutting grass. Over tensioning
will reduce belt and spindle bearing life.
1. Set the parking brake, and turn the ignition key to
“OFF” to stop the engine. Remove the key and
spark plug wire.
2. Loosen locknut on turnbuckle (Figure 186).
3. Rotate turnbuckle toward rear of mower to
increase tension on belt. Rotate turnbuckle toward
front of mower to decrease tension on belt (Figure
186).
(1) Locknut
(2) Turnbuckle
(3) Rear idler pulley
(4) Front position for idler
pulley
(5) Belt guide
(1) Belt guide
Important