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After use, check the tool to make sure that it is in top condition.It

is recommended that you take this tool to a RYOBI Authorized

Service Center for a thorough cleaning and lubrication at least

once a year.

DO NOT MAKE ANY ADJUSTMENTS WHILE THE MOTOR IS

IN MOTION.

ALWAYS REMOVE THE BATTERY FROM THE TOOL BEFORE

CHANGING REMOVABLE OR EXPENDABLE PARTS

(BIT...ETC.), LUBRICATING OR WORKING ON THE UNIT.

WARNING!

To ensure safety and reliability, all repairs should be performed by 

an 

AUTHORIZED SERVICE CENTER or other QUALIFIED

SERVICE ORGANIZATION.
SAVE THESE INSTRUCTIONS FOR FUTURE REFERENCE.

MAINTENANCE

6

NOTE:

 There are several spacer washers available for you. 

Ensure that the groove width is the total of the spacer washers 

between the diamond cutting discs and the thickness of the  

culting discs. 

• Tighten the lock nut using the lock nut spanner (15). Press the 

spindle lock while doing this.

NOTE:

 When setting a cut width that is smaller than the 

maximum cut width, you must use the backing pad on the fixing 

flage side for fixing the cutting discs since the fixing flange 

cannot fix the discs alone on the spindle due to the thread 

length (see fold-out page). 

NOTE:

 Replace diamond cutting discs only in pairs.

Handling the wall grinder
CAUTION! 

This appliance is designed for dry cutting only!

• Use a service line detector to check the internal and external 

walls for concealed power, gas and water supply lines before 

using the wall chaser.

• Select the desired groove width.

1.) Position the appliance with the roller (11) against the brick 

wall.

2.) Now switch the appliance on and plunge it into the masonry 

until the stop (7) makes contact.

3.) Then mill the groove in the masonry; pay attention to the 

milling direction. The appliance must always run in reverse 

rotation. Otherwise the appliance could be pushed out of the 

cut in an uncontrolled manner.

• At ihe end of the groove, swivel the appliance out of the 

groove and only then switch the appliance off.

• Now break out the resulting bar between the two grooves 

using the hand chisel (16).

CAUTION! 

Materials containing asbestos must not be machined!

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