Ariens 11.18ELECTRICAL FOR SERIAL NUMBERS BELOW 5,000

11.18ELECTRICAL FOR SERIAL NUMBERS BELOW 5,000

Safety Interlock System

WARNING: Safety Interlock failure and improper operation of unit can result in death or serious injury. Check system before each use to make sure it is functioning properly.

Perform the following tests to ensure the safety interlock system is working properly. If the unit does not perform as stated contact your Ariens dealer for repairs.

Test	Steering	PTO	Parking	Engine
	Lever		Brake
1	Neutral	Off	Engaged	Starts
	Position
2	Neutral	On	Engaged	Doesn’t
	Position			Start
3	Neutral	Off	Disengage	Doesn’t
	Position		d	Start
4*+	Out of Neutral	Off	Disengage	Shuts Off
	Position		d
5*	Neutral	On	Engaged	Shuts Off
	Position

* Test with engine running. + Operator lifts off seat.

Initial check out: Make sure that all switches are in their

proper position for starting: (A) PTO off. (B) transaxle in neutral position. (C) operator on the seat. If there is no battery voltage to start the engine, use the following steps to determine the problem.

STEP 1

Check out the battery. Use a voltmeter to check for proper voltage. Replace the battery if necessary and/or charge to proper level. Refer to Battery.

STEP 2

Use a voltmeter to make sure you have battery voltage to terminal B on the back side of the ignition switch in the "off" position. If you don’t have battery voltage to terminal B check the battery connection and the fuse in the red lead.

STEP 3

With the ignition switch in the "run" position, check to see if the battery voltage is being transferred from terminal B to terminal L. Terminal L on the ignition switch supplies battery voltage to the back of the PTO switch on the purple lead and on to the neutral switches on the red/green lead. Terminal A also supplies battery voltage to the hour meter.

For models with serial numbers below 5,000 with the key switch is in the "run" position, the seat switch "on" and the parking brake "off" power is supplied to terminal 86 of the start relay.

Terminal 86 will also have power if the key switch is in "run", the PTO switch is "off" and the steering arms are in the "neutral" position. The engine will start in either case.

The effect this has on operation is that before the PTO switch can be turned "on" or the steering arms can be taken out of the "neutral" it is required that the seat switch is "on" and the parking brake is "off".

The hour meter will run whenever the key switch is in the "run" position.

STEP 4

With ignition switch in the "start" position, battery voltage is transferred from terminal B to S. Terminal S transfers battery voltage through the PTO switch (disengaged), and the two neutral switches (engaged) to the starter solenoid.

PTO clutch check out: Remove the wiring harness PTO clutch leads from the clutch. With a multimeter check the clutch coil for resistance to see if the coil is good.

The clutch used should have a coil resistance of (5.87- 7.87) ohms. If the coil is bad the resistance will be higher or not at all.

Ignition switch check out: Battery voltage check in the "off" position, check for voltage at terminal "B". It should not be present on terminals A, S, and L.

With the ignition switch in the "run/light" position, check for battery voltage at terminals A, Y, and L.

With the ignition switch in the "run" position, check for battery voltage at terminal L. It should not be present at terminal A, S, and Y.

With the ignition switch in the "start" position, check for battery voltage at terminals B, A, S and L.

PTO switch check out: The PTO switch is a push/pull switch with normal open and closed contacts. Power transfer should be checked with a voltmeter. The switch contacts should be checked with an ohm meter with the wire harness plug removed. The light switch is similar to the PTO switch with only one set of contacts.

Diode check out: Diodes are checked with an ohm meter set on the diode check, and should only pass voltage in one direction. If it passes voltage in both directions or not at all the diode is bad and needs to be replaced.

11 - 49