Ariens GRAVELY Pro-Turn 400 Series Dealer/Owner/Operator Manual page 37

If the unit easily rolls forward the
transmission brakes are not fully
engaging. Adjust the brake actuator
travel to set the brake.
Adjust the Parking Brake
1. Engage the parking brake.
2. Loosen the jam nuts on the rear of the
compression spring until there is no
tension on the spring. Then tighten the
nuts until the spring measures 1 1/2"
(3.8 cm).
3. Loosen the nuts on the front side of the
trunnion until there is a 1/8 – 1/4" (3.2 –
6.4 mm) gap between the nut and
trunnion.
4. Tighten the jam nut against the stop nut.
5. Test brake function.
NOTE: Set both bypass valves to the drive
position when finished adjusting the brake.
3
1. Jam Nuts
2. Spring
3. Trunnion
Figure 30
PTO BELT
WARNING: Moving parts can cut
or amputate body parts. ALWAYS
wait for moving parts to stop
before performing maintenance
or service.
1
2
1/8 – 1/4" (3.2
– 6.4 mm)
1 1/2"
(3.8 cm)
CAUTION: Damaged or worn
belts may result in injury and/or
damage to unit. Check belts for
excessive wear or cracks often.
PTO Belt Access
1. Properly stop and park unit (See
Operation on page 16).
2. Lower the mower deck.
3. Place seat in most rearward position.
4. Remove belt covers.
5. Place foot board in open position
(Figure 31).
1. Footboard in open position
Replacing Mower Belts
(Figure 33)
NOTE: Long PTO mower belt must be
removed to remove short mower belt.
CAUTION: Use care when
releasing idler spring tension.
Keep body parts well away from
idlers when performing this
operation.
1. Slowly release the tension on the long
mower belt idler (item 5) until all the
tension is removed from the springs
(item 3).
2. Remove the belt guide bolt (item 7) from
the idler arm.
3. Remove long mower belt (item 1) from
left blade sheave and remove from deck.
4. Slowly release the tension on the short
belt idler (item 4) until all the tension is
removed from the springs.
EN - 37
1
Figure 31