Gravely Pro-walk hydro 36HR PG Owner's/Operator's Manual page 39

Replacing Mower Deck Idler Pulley
See Figure 42.
NOTE: It is not necessary to remove spring
pressure to remove the idler pulley.
1. Park unit safely. (See PARKING on
page 19.)
2. Remove center belt cover.
3. Remove nyloc hex nut (A) from top of
idler pulley (B).
NOTE: If necessary use a pry bar or
screwdriver to hold the round head square
neck hex bolt in the square hole in the idler
arm.
4. Remove the idler pulley.
988153, 56
B
988154, 55, 57, 58, 59
Figure 42
A
B
5. Install new idler pulley on top of existing
spacer and tighten nyloc hex nut.
6. Check belt tension spring length See
Adjusting Deck Belt Tension on page 34.
7. Install belt cover.
TRACTION DRIVE BELT
NOTE: The Ogura electric clutch can be
adjusted if the clutch starts to slip. (See
CLUTCH ADJUSTMENT on page 40.)
Removal
1. Park unit safely. (See PARKING on
2. Remove mower deck belt guard.
3. Remove mower deck drive belt. See
4. Locate hex bolt and flange nut (A)
A
5. Under unit, remove outer flange nut (B)
6. Remove traction drive belt (E).
GB - 39
page 19.)
Removing and Installing Mower Deck
Drive Belt on page 35.
directly behind engine (Figure 43). Fully
loosen but do not remove flange nut.
This will allow hex bolt to pivot, releasing
spring (D) tension (Figure 44).
A
Figure 43
from idler pulley bolt (C) and disconnect
tension spring (D). See Figure 44.