Gravely Promaster 266 - Page 27

GB - 27
Installation (Figure 21)
1. Install the new PTO belt on electric
clutch, idler pulleys, and blade spindle
pulleys.
2. Place 1/2-inch driver and ratchet
extension into square hole in PTO belt
idler.
3. While pulling PTO belt idler towards the
rear of unit, install PTO mower belt on
PTO belt idler.
4. Slowly release the tension until PTO belt
idler is firmly against PTO belt.
NOTE: The PTO idler spring length range is
13 to 13.25 in. (33 to 33.6 cm) measured at a
3 in. (7.6 cm) cutting height. Adjust the idler
spring length as needed, see figure 21.
5. Install belt guard on rear of unit.
6. Install left hand belt cover on mower
deck.
7. Close footboard (see MOWER DRIVE
BELT AND PTO BELT ACCESS on
page 26).
MOWER DRIVE BELT REMOVAL
Removal (Figure 20)
NOTE: The PTO belt must be removed from
blade spindle pulleys prior to removing
mower drive belt. The PTO belt does not
need to be removed from electric clutch.
1. Remove PTO belt from blade spindle
pulleys (see PTO BELT REMOVAL on
page 26).
2. Remove mower drive belt from right
blade spindle pulley and then from
center blade spindle pulley.
3. Loosen drive belt idler pivot bolt just
enough to gain clearance to remove
mower drive belt from under drive belt
idler.
4. Remove mower drive belt from unit.
Installation (Figure 20)
1. Install the new mower drive belt on
center blade spindle pulley, right blade
spindle pulley, and drive belt idler.
2. Tighten drive belt idler pivot bolt.
3. Install PTO belt on blade spindle pulleys
(see PTO BELT REMOVAL on page 26).
TRANSMISSION BELT REMOVAL
(992150, 152, 154, 159, 161, 162, 163,
164, 165, 166, 167, 168, 170, 175, 176)
Removal (Figure 22)
1. Remove PTO belt from electric clutch
(see PTO BELT REMOVAL on page 26).
2. Remove clutch anchor.
3. Slowly release the tension on the hydro
pump belt idler until all the tension is
removed from the springs.
4. Remove old hydro pump belt from right
hand hydrostat sheave first.
OF3229
Figure 21
The PTO idler spring length range is
13 to 13.25 in. (33 to 33.6 cm) measured
at a 3 in. (7.6 cm) cutting height. Adjust as
necessary.
Measure
PTO idler
spring
length here.
PTO Idler Spring Length
CAUTION: Use care when
releasing idler spring tension.
Keep body parts well away from
idlers when performing this
operation.