Gravely 988001, Service Manual

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7 - 22
3. On Pro 100 models: Remove the PTO clutch belt
from the clutch hub.
4. Loosen the 3/8-16 bolt which fastens the fixed idler
pulley to the frame and slide the pulley to the end
of slot.
NOTE: Remove the bolt, spacer and idler pulley if nec-
essary.
5. Remove old transmission drive belt.
6. Put new transmission belt in the top groove of the
clutch hub and on the transmission sheave.
7. Tension the belt with fixed idler pulley and tighten
the 3/8-16 nut and bolt.
NOTE: It may be necessary to re-tension this belt dur-
ing break-in.
8. Put the mower belt (and PTO belt on the Pro 100)
back on engine sheave. Tighten the belt finger
plate.
Pro 200
1. Stop the engine. Remove the ignition key. Put the
PTO lever/switch in the "OFF" position. Put the
shift lever in the neutral "N" position.
2. Remove the mower belt from the mower clutch
sheave, Figure 20.
3. Remove the PTO clutch belt from clutch hub (recoil
model only).
4. Remove the PTO clutch stop bracket (electric
model only).
5. Loosen the 5/16-18 bolt holding the small belt
guide at the left of the transmission sheave. If
necessary, loosen or remove the bolts which fasten
the belt guide weldment to the frame.
6. Remove the old transmission drive belt.
7.5 TRACTION CLUTCH
Pro 200 Only
The linkage for the traction clutch should be inspected
every 30 days (more often under severe conditions).
Inspect all pivot points for wear. Check pulleys with the
belt off. Inspect belt for cracks and wear. Replace parts
as needed.
1. Fixed Idler Pulley
2. Transmission Sheave
3. Engine Sheave 4. Transmission Belt
5. Belt Finger Plate
Figure 18 - Pro 150
1
2
3
4
5
1. Mower Belt
2. Mower Clutch Sheave
3. 7/16" Bolt
4. lock Washer
5. Flat Washer
6. 3/8" Bolt 7. PTO Clutch Idler
Pulley
8. PTO Idler Belt Guide
9. PTO Clutch Belt
10.Transmission Belt
Figure 19 - Pro 100