John Deere stx38 - Manual (Page 293)

3/21/97
8 - 7
MISCELLANEOUS MOWER DECKS
MOWER DECKS
DIAGNOSIS
IMPORTANT: During hot weather the mower deck
may become covered with a soot like material
that looks like engine exhaust or belt dust. This
black soot like material is a type of lawn mold.
Do not change belts. There is no problem with
the tractor or mower deck.
Test/Check Point Normal If Not Normal
1. Rear draft arm brackets.
STX38—Only
Mower deck does not fall off lift
system. Modify and install rear draft arm
brackets (M116688 and M116689)
from current black deck STX Lawn
Tractor. See page 8-7 this section.
2. Mower spindle. Mower spindle welds not broken.
Flanges not bent. Poor cut quality. Blades cannot be
leveled, bent spindle mounting
flange. Blades contact deck.
See spindle replacement on page
8-9 this section.
3. Mower deck. Grass blows out side.
Belt frays on jumps off idler.
If grass blows out front of deck see
mower deck adjustment—page 8-9
this section.
Install new idler kit—if applicable.
LIFT SYSTEM
STX38 (M00STXB595001—750000)
STX38 (M00STXB010001—139615)
1. Reshape LH and RH brackets to 135 mm (5.3 in.)
hole centers.
2. Park tractor on level surface. Engage park brake.
3. Raise rear of tractor onto jack stands. Remove rear
wheels.
4. Remove nut and old bracket from roller assemblies
on both sides of tractor.
5. Install RH Bracket (M11688) on left side of tractor.
Fasten lower end of bracket (A) with nut removed
in Step 4.
6. Fasten upper end of bracket (B) to slot in lift arm
with M6x20 cap screw and locknut. Tighten
locknut to contact, then loosen 1 turn.
NOTE: Bracket must be free to move up or down in
slot when roller is moved during side-to-side
mower deck leveling adjustment.
135 mm 135 mm
(5.3 in.) (5.3 in.)
M85801
A
M85802
B