Ariens Promaster 252 Owner's/Operator's Manual page 29

Installation (Figure 18)
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
33 to 33.6 cm measured at a 7.6 cm cutting
height. Adjust the idler spring length as
needed, see figure 18.
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 27).
PTO Idler Spring Length
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.
Figure 18
MOWER DRIVE BELT REMOVAL
Removal (Figure 17)
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.
Installation (Figure 17)
TRANSMISSION BELT REMOVAL
Removal (Figure 19)
Measure
PTO idler
spring
length here.
OF3229
GB - 29
1. Remove PTO belt from blade spindle
pulleys (see PTO BELT REMOVAL on
page 28).
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.
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 28).
1. Place unit in the service position (see
SERVICE POSITION on page 23).
CAUTION: Use care when
releasing idler spring tension.
Keep body parts well away from
idler when performing this
operation.
2. While pulling idler pulley away from unit,
remove transmission belt from idler
pulley.