24
1
2
3
1
2
3
2.75" (70mm)
2.75"
(70mm)
1. Idler Adjustment J-Bolt
2. Top Jam Nut
3. Lower Jam Nut
97068A
Never make adjustments with the
engine running.
LOSS OF POWER IN THE DRIVE
SYSTEM
Check the fluid level and make sure the proper
amount of fluid is in the reservoir. The cooling fins
and fan blades should be clean and free of foreign
matter.
NO POSITIVE NEUTRAL POSITION
If drive wheels travel forward or backward when
the steering lever is in swing-out position (neutral),
adjustment is required.
NEUTRAL ADJUSTMENT
(Refer to illustration page 37)
1. Block up under tractor frame so both drive
wheels are off the ground.
2. Make sure parking brake is released.
3. Remove linkage rod (item 6) from hydro pump
control arm (item 3).
4. Place steering levers in the neutral swing-out
position and start engine.
5. If either of the drive wheels turn, proceed with
the following adjustment.
6. Loosen locking nut (item 13) and rotate pivot
bolt (item 11) until neutral is achieved. Tighten
locking nut.
NOTE: Pivot bolt roller is mounted off center
and works as an eccentric when the bolt is
turned.
7. Repeat procedure for drive system on the other
side.
8. Reinstall linkage rod in control arm. If ball stud
does not reinstall into control arm without mov-
ing the control arm, adjust length of linkage rod
until it does to assure neutral adjustment will be
maintained when linkage is connected.
9. Test drive machine for straight line travel with
both levers full forward. If travel is not in a
straight line, adjust the steering lever stop on
the side that is the fastest, i.e., if machine goes
to the left, adjust the right steering stop to
slow down the right drive system until travel is
straight ahead.
BELT REPLACEMENT
(Refer to illustration page 35)
1. Remove key from ignition switch.
2. Loosen the belt tension by loosening idler ad-
justment J-bolts (item 47) and remove belts
from pulleys.
3. Remove two bolts (item 36) between flex cou-
pling disc (item 27) and drive sheave (item 19).
Remove the two spacers (item 26) between flex
coupling and drive sheave.
4. Remove the two belts through the gap created
by the removal of the two spacers.
5. Replace belts and reverse procedure to install
belts.
NOTE: Upon reassembly, install flat washers
(item 33) with rounded edges in contact with
flex coupling disc. On opposite side of disc in-
stall spacers (item 26) with chamfered edges in
contact with flex coupling disc.
6. To adjust the belt tension, loosen the top jam
nut (item 2, Fig 6) on the J-bolt. Adjust the
lower jam nut (item 3, Fig 6) so that the spring
coils are extended to a length of 2.75" (70mm).
Tighten the top jam nut against the bracket.
7. Recheck spring tension length after unit has run
for ten (10) hours.
ADJUSTMENTS AND TROUBLESHOOTING
Fig. 6
33
ENGINE ASSEMBLY
1
2
5
6
7
8
8
8
8
9
9
9
9
10
11
12
13
14
14
16
17
22
47
48
18
19
20
20
24
25
25
26
26
27
28
29
30
31
32
33
33
9
34
35
36
37
38
39
40
43
43
38
38
43
44
44
37
37
05085
23
23
23
23
3
4
15
46
46
40
40
45
45
49
50
38
38
14
14
14
41
42
45
45
45
45
45
45
51
21
37
37
45
45
52
53
53
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