Snapper 421620BVE important safety instructions Problem Probable Cause Corrective Action, Stop

TROUBLESHOOTING

PROBLEM		PROBABLE CAUSE		CORRECTIVE ACTION
Engine Will Not	1.	Fuel tank empty.	1.	Fill fuel tank with fresh fuel to proper level.
Start Using	2.	Engine needs choking.	2.	Move choke control to “CHOKE” position.
Recoil Starter	3.	Spark plug wire disconnected.	3.	Place spark plug wire onto spark plug.
	4.	Faulty parking brake, blade or ignition switch.	4.	Contact authorized SNAPPER dealer.
	5.	Park brake not engaged.	5.	Engage park brake.
	6.	Ignition is in the OFF position.	6.	Turn ignition switch to the RUN position.
Engine Will Not	1.	Fuel tank empty.	1.	Fill fuel tank with fresh fuel to proper level.
Start Using	2.	Engine needs choking.	2.	Move choke control to “CHOKE” position.
Electric Starter	3.	Spark plug wire disconnected.	3.	Place spark plug wire onto spark plug.
	4.	Faulty parking brake, blade or ignition switch.	4.	Contact authorized SNAPPER dealer.
	5.	Park brake not engaged.	5.	Engage park brake.
	6.	Blown Fuse.	6.	Replace with new 20 AMP fuse.
	7.	Faulty interlock module.	7.	Contact authorized SNAPPER dealer.
	8.	Ignition is in the OFF position.	8.	Turn ignition switch to the START position.
	9.	Battery is weak or dead.	9. Charge or replace with new battery.
	10. Battery cables loose, broken disconnected or		10. Clean and connect battery cables. If
		corroded.		broken, replace with new battery cables.
	11. Faulty electric starter or starter solenoid.		11. Contact authorized SNAPPER dealer.
	12. Starter cable loose, broken or disconnected		12. Connect starter cable. If broken, replace
				with new starter cable.
	13. Electrical wiring harness disconnected or broken.		13. Connect or replace with new wiring harness.
Engine Stalls After	1.	Operator not in seat.	1.	Sit in operator’s seat.
Running	2.	Choke control in the “CHOKE” position.	2.	Move choke control to “OFF” position.
	3.	Fuel tank empty.	3.	Fill fuel tank with fresh fuel to proper level.
	4.	Engine air pre-cleaner and or air cleaner dirty.	4.	Clean free of all debris.
	5.	Spark plug defective or gap set improperly.	5.	Service spark plug.
	6.	Fuel filter restricted.	6.	Replace fuel filter.
	7.	Water, debris or stale fuel in fuel system.	7. Drain and clean fuel system.
Engine Loses	1.	Excessive load on engine.	1.	Lessen load.
Power	2.	Engine air pre-cleaner or air cleaner dirty	2.	Clean or replace filters.
	3.	Spark plug faulty.	3.	Service spark plug.
	4.	Water, debris or stale fuel in fuel system.	4. Drain and clean fuel system. Replace filter.
	5.	Debris build up on engine cooling screen.	5. Clean all debris from engine cooling screen.
Engine Backfires	1. Throttle control set too “FAST”.		1.	Set throttle control to “SLOW” and allow
When Turned To				engine to idle. Then, turn key to “OFF”.
“STOP”
Excessive Vibration	1. Damaged, out of balance or bent mower blades.		1.	Service mower blade(s).
	2.	Loose blade components.	2.	Service and tighten loose parts.
	3.	Loose or missing air lift (if equipped).	3.	Replace air lifts. Tighten to proper torque.
	4.	Lumpy or frayed belt	4.	Replace belt.
	5.	Bent Idler, stationary or spindle pulley	5.	Replace pulley.

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