Porter-Cable 7406 - Manual (Page 10)

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4. Push retaining nut hub through an abrasive disc and position to spindle.
Thread nut onto spindle finger tight.
5. Depress spindle lock pin (E) Fig. 10, and hold while rotating backup pad
clockwise by hand until spindle lock engages.
6. While continuing to hold spindle lock pin engaged, grasp the backup
pad and abrasive, and rotate clockwise to tighten (see Fig. 10).
OPERATION
USING A DISC GRINDER
Be certain wheel guard and auxiliary handle are installed.
Firmly grip the auxiliary handle and motor housing as shown in Fig. 11. Lift
up rear of motor housing so only the front section of grinding wheel contacts
the work. Use light pressure. Always lift the grinder off work before starting or
stopping motor. The arrow on the front gear housing indicates the direction
in which the grinding wheel rotates.
Fig. 11
MAINTENANCE
KEEP TOOL CLEAN
Periodically blow out all air passages with dry compressed air. All plastic
parts should be cleaned with a soft damp cloth. NEVER use solvents to clean
plastic parts. They could possibly dissolve or otherwise damage the material.
CAUTION: Wear safety glasses while using compressed air.
FAILURE TO START
Should your tool fail to start, check to make sure the prongs on the cord plug
are making good contact in the outlet. Also, check for blown fuses or open
circuit breakers in the line.
LUBRICATION
This tool has been lubricated with a sufficient amount of high grade lubricant
for the life of the unit under normal operating conditions. No further
lubrication is necessary.
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