John Deere 318 - Manual (Page 57)

7. Put a 0.46 mm (0.018 in.) flat feeler gauge through
slots in brake plate between rotor and armature. Turn
lock nuts until space between rotor and armature is 0.46
mm (0.018 in.). Be sure all three nuts are adjusted so
space between armature and rotor is adjusted to
specification at each of three slots in brake plate.
8. After adjusting, turn ignition switch ON. Move PTO
switch ON and OFF several times to seat parts. Turn
ignition switch OFF. Recheck clearance and adjust as
necessary.
Early 420 Shown
M32123
-UN
-03AUG89
9. Install PTO clutch belts.
10. On 420, lubricate idler shaft with multipurpose
grease.
NOTE: Determine which adjuster you have. (420 only)
11. When adjusting PTO belt tension on horizontal
adjuster, tighten bolt until spring measures 41 mm (1.600
in.).
When adjusting PTO belt tension on vertical adjuster,
tighten nut until spring measures 35 mm (1.380 in.).
Horizontal Adjuster (Early 420)
12. Install right-hand side panel and grille.
Vertical Adjuster (Later 420)
M49503
-UN
-20DEC89
M49502
-UN
-20DEC89
MX,15904005,10 -19-20MAR95
MX,15904005,11 -19-16JAN95
Front PTO Clutch/Install
TM1590 (17MAY95)
40-05-5
316, 318 & 420 Lawn and Garden Tractors
020895
40
05
5