Troy-Bilt E683F-Horse, 683-Horse Troubleshooting Procedures, Linkage, Eccentric, Connecting Rod

Appendix A: Troubleshooting

		PROBLEM
CHECK OR TEST
	Engine	Engine shuts off when	Engine does not shut off
(Check or test in sequence shown	won’t start	Wheels/Tines/PTO Drive	when Forward Interlock
		Lever is shifted into	Levers are released while
until problem is resolved.)		FORWARD	Wheels/Tines/PTO Drive
			Lever is in FORWARD
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
Troubleshooting Procedures		B. Lever shifts into FAST wheel gear, but not
1 Wheels/Tines/PTO Drive Lever:		into SLOW wheel gear–
	Linkage	• Connecting rod at end of lever might be
A. Lever does not stay in FORWARD–
		backwards, or bent in toward transmission
• Drive belt may be too tight. Raise belt		housing and hitting it. Other shifting linkage
adjustment block a little (Sect. 5).		might be bent. Straighten or replace linkage
• Clutch pawl spring at end of lever may be		(Figure 5-43).
overstretched. Install new spring.		• Clutch inside transmission may be binding
B. Lever hard to shift into REVERSE–		(Problem 2-A).
• Check reverse disc for wear (Sect. 5).	Eccentric	C. Lever moves freely, but won’t shift in or
• Check adjustment of reverse disc and/or		out of gear–
reverse spring and plunger assy. (Sect. 5).		• Eccentric shifting pin inside transmission
• Clean and re-lubricate motor mount bars,	Connecting Rod	may be broken (rare) or worn. Disconnect
belt adjustment block and linkages on lever		linkage from eccentric lever and try moving
(Sect. 5).		eccentric lever by hand (Figure 5-43). If
C. Tiller stays in REVERSE when lever is	Figure 5-43: Check connecting rod,	lever moves easily, contact the Technical
	shifting linkage and eccentric lever.	Service Department.
released–

• Lubricate motor mount bars, belt adjust-	• Lubricate eccentric lever at rear of power	3 Wheels and Tines Won’t Turn:
ment block and linkages on lever (Sect. 5).		• Review operation of controls (Sect. 3 & 4).
• Check adjustment of reverse spring and	unit transmission (Figure 5-43). If rust	• Check condition and adjustment of drive
plunger (Sect. 5). If problem persists,	is present, use penetrating oil and work	belt and reverse disc (Sect. 5).
contact Technical Service Department.	eccentric lever back and forth by hand.	• Mounting bolt for transmission drive pulley
D. Lever sticks in FORWARD–	• Lubricate linkage to Wheel Speed Lever to	may be loose. (See Figure 5-1). If so, drive
• Lubricate motor mount bars, belt adjust-	eccentric lever (Figure 5-43).	belt or reverse disc will turn pulley, but pulley
	• Clutch inside transmission may be binding.	won’t turn main drive shaft.
ment block, and linkages on lever (Sect. 5).
	Disconnect linkage from eccentric lever and	• Worm gears that drive wheel and tiller
If problem continues, contact the Technical
Service Department.	work eccentric lever by hand. If difficult	shafts may be worn.
E. Lever hard to shift into FORWARD–	or impossible to move, it may be due to	4 Wheels Turn, But Tines Won’t:
	a damaged keyway on the wheel shaft.
• Follow advice for Problem 1-D. Also check		• Tines/PTO Clutch Lever must be in ENGAGE
	Contact Technical Service Department.
		position (Sect. 3).
for possible bent motor mount bar that could
	• Lubricate washers and castle nut on pivot
		• Tines/PTO Clutch Lever may need adjust-
be binding in engine mount holes.
	of lever. If necessary, remove roll pin and
2 Wheel Speed Lever:		ment.
	back nut off 1/6th turn. Replace roll pin and
		• Key for dog clutch on tine attachment main
A. Lever hard to shift, or sticks in FAST or	test the movement.
		drive shaft may be missing, broken.
SLOW wheel gear positions–	• Apply grease to zerk fitting (if so equipped)
		• Worm gears that drive the tine shaft may
	with grease gun until grease appears around
		be worn.
	washers.

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