Service Manual

ELECTRICAL SYSTEM

A5-2 XL Lawn Tractor Service Manual

Fig A5 003 PICT-4476

Fig A5 004 ﬁ g. 88

The electric clutch is located on the PTO end of the

engine crankshaft (Fig. A5 003).

1. Disengage the PTO, set the parking brake, turn the

ignition to OFF, and remove the key.

2. Disconnect the clutch wire connector.

3. Set the multimeter or volt/ohm meter to check

resistance (ohms).

4. Connect the meter lead wires to the wires in the

clutch connector (Fig. A5 004).

If the electric PTO clutch is not engaging or is suspected

as a cause of electrical problems, use the following

troubleshooting steps. These procedures will help you

determine if the clutch has failed or is the cause of the

electrical problem.

Testing

This clutch electrically controls the engagement and

disengagement of the Power Take Off (PTO) pulley.

Purpose

Electric PTO Clutch

Location

The PTO clutch is composed of three major

components; the ﬁ eld, the clutch plate, and the friction

plate. The clutch plate always turns with the engine. The

ﬁ eld is a coil of wire on an iron core, which becomes an

electromagnet when power is applied.

The friction plate is the only piece that can slide up and

down on the crankshaft axis. It is normally spring loaded

so that it is not in contact with the clutch plate and is

pressed against the brake material opposite the clutch.

When power is applied, the friction plate is drawn toward

the clutch plate and the two rotate as one.

How It Works

Coil Resistance Measurement

5. The meter should read 2.84 ohms + 0.14 ohms. If

the reading is above or below these readings, the

ﬁ eld has failed and needs to be replaced. If the

reading is between these two limits, measure the

clutch current draw.