Cub Cadet 8404 manual When Engine Suddenly Stops, When the Engine Must Be Stopped Immediately

When Engine Suddenly Stops

Cause	Countermeasures
Fuel Leakage	- Check the fuel tank and refill if necessary.
	- Check fuel system for air or leaks.
Bad Nozzle	- If necessary, replace with a new nozzle.
Moving parts are overheated due to	- Check amount of engine oil with the oil level gauge.
shortage of lubricating oil or improper	- Check lubricating oil system.
lubrication
	- Check to see if oil filter element has become clogged. If necessary,
	replace with a new oil filter.
	- Check to see if the engine bearing clearances are within factory
	specifications.

IMPORTANT: When the engine has suddenly stopped, allow the engine to decompress; then try to turn the engine over by lightly pulling on the fan belt. If the engine turns easily without any abnormal resistance, the cause of the trouble is usually lack of fuel or a bad nozzle.

When the Engine Must Be Stopped Immediately

Cause	Countermeasures
Speed suddenly decrease or	- Check the adjustments and timing of the injection pump and the fuel
increases	system.
Unusual sound is heard suddenly	- Check all moving parts carefully.
Color of exhaust suddenly turns dark	- Check the fuel injection system, especially the fuel injection nozzle.
Bearing parts are overheated	- Check the lubricating system.
Oil lamp lights up during operation	- Check the lubricating system.
	- Check to see if the engine bearing clearances are within factory
	specifications.
	- Check the function of the oil regulating valve.
	- Check the oil pressure switch.
	- Check filter base gasket.

TRACTOR TROUBLESHOOTING

When Tractor Does Not Move While Engine Is Running

Cause		Countermeasures
Speed change lever is in neutral	-	Check position of shift levers.
Parking brake is engaged	-	Release the parking brake.

When 3 Point Hitch Does Not Move

Cause		Countermeasures
Oil filter is clogged	-	Change the oil filter.
3 point hitch does not lower	-	Check the hydraulic adjusting grip.

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