Troy-Bilt E686N-Horse Tiller User Manual


 
Appendix A: Troubleshooting
CHECK OR TEST
(Check or test in sequence shown
until problem is resolved.)
Throttle Lever in START position X
Wheels/Tines/PTO Drive Lever
in NEUTRAL position X
Forward Interlock Wire Harness
connector securely mated X X
Forward Interlock Levers not being
squeezed prior to shifting Wheels/
Tines/PTO Drive Lever to X
FORWARD position
Visually inspect for bare, broken
or disconnected wires X X
Check handlebar wire harness X X
Check transmission wire harness X X
PROBLEM
Troubleshooting Procedures
1 Wheels/Tines/PTO Drive Lever:
A. Lever does not stay in FORWARD
Drive belt may be too tight. Raise belt
adjustment block a little (Sect. 5).
Clutch pawl spring at end of lever may be
overstretched. Install new spring.
B. Lever hard to shift into REVERSE
Check reverse disc for wear (Sect. 5).
Check adjustment of reverse disc and/or
reverse spring and plunger assy. (Sect. 5).
Clean and re-lubricate motor mount bars,
belt adjustment block and linkages on lever
(Sect. 5).
C. Tiller stays in REVERSE when lever is
released
Lubricate motor mount bars, belt adjust-
ment block and linkages on lever (Sect. 5).
Check adjustment of reverse spring and
plunger (Sect. 5). If problem persists,
contact Technical Service Department.
D. Lever sticks in FORWARD
Lubricate motor mount bars, belt adjust-
ment block, and linkages on lever (Sect. 5).
If problem continues, contact the Technical
Service Department.
E. Lever hard to shift into FORWARD
Follow advice for Problem 1-D. Also check
for possible bent motor mount bar that could
be binding in engine mount holes.
2 Wheel Speed Lever:
A. Lever hard to shift, or sticks in FAST or
SLOW wheel gear positions
Lubricate eccentric lever at rear of power
unit transmission (Figure 5-43). If rust is
present, use penetrating oil and work
eccentric lever back and forth by hand.
Lubricate linkage to Wheel Speed Lever to
eccentric lever (Figure 5-43).
Clutch inside transmission may be binding.
Disconnect linkage from eccentric lever and
work eccentric lever by hand. If difficult or
impossible to move, it may be due to a
damaged keyway on the wheel shaft.
Contact Technical Service Department.
Lubricate washers and castle nut on pivot
of lever. If necessary, remove roll pin and
back nut off 1/6th turn. Replace roll pin and
test the movement.
Apply grease to zerk fitting (if so equipped)
with grease gun until grease appears around
washers.
B. Lever shifts into FAST wheel gear, but
not into SLOW wheel gear
Connecting rod at end of lever might be
backwards, or bent in toward transmission
housing and hitting it. Other shifting linkage
might be bent. Straighten or replace linkage
(Figure 5-43).
Clutch inside transmission may be binding
(Problem 2-A).
C. Lever moves freely, but wont shift in or
out of gear
Eccentric shifting pin inside transmission
may be broken (rare) or worn. Disconnect
linkage from eccentric lever and try moving
eccentric lever by hand (Figure 5-43). If
lever moves easily, contact the Technical
Service Department.
3 Wheels and Tines Wont Turn:
Review operation of controls (Sect. 3 & 4).
Check condition and adjustment of drive
belt and reverse disc (Sect. 5).
Mounting bolt for transmission drive pulley
may be loose. (See Figure 5-1). If so, drive
belt or reverse disc will turn pulley, but
pulley wont turn main drive shaft.
Worm gears that drive wheel and tiller
shafts may be worn.
4 Wheels Turn, But Tines Wont:
Tines/PTO Clutch Lever must be in ENGAGE
position (Sect. 3).
Tines/PTO Clutch Lever may need adjust-
ment.
Key for dog clutch on tine attachment main
drive shaft may be missing, broken.
Worm gears that drive the tine shaft may
be worn.
Figure 5-43: Check connecting rod,
shifting linkage and eccentric lever.
Connecting Rod
Linkage
Eccentric
Engine
wont start
Engine shuts off when
Wheels/Tines/PTO Drive
Lever is shifted into
FORWARD
Engine does not shut off
when Forward Interlock
Levers are released while
Wheels/Tines/PTO Drive
Lever is in FORWARD
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