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Specifications - Ryobi G-850 Owner's Operating Manual

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INSTRUCTIONS FOR SAFE HANDLING
1. Make sure that the tool is only connected to the
voltage marked on the name plate.
2. Never use the tool if its cover or any bolts are missing.
If the cover or bolts have been removed, replace
them prior to use. Maintain all parts in good working
order.
3. Always secure tools when working in elevated
positions.
4. Never touch the blade, drill bit, grinding wheel or other
moving parts during use.
5. Never start a tool when its rotating component is in
contact with the workpiece.
6. Never lay a tool down before its moving parts have
come to a complete stop.
7. ACCESSORIES: The use of accessories or
attachments other than those recommended in these
instructions might present a hazard.
8. REPLACEMENT PARTS: When servicing use only
identical replacement parts.
DESCRIPITION
1. Spindle lock
2. Switch button
3. Rear motor housing
4. Side handle
5. Wheel guard
6. Lock nut spanner

SPECIFICATIONS

Voltage
Power input
No load speed
Grinding wheel
Spindle thread
Disk bore size
Net weight
ASSEMBLY
WHEEL GUARD INSTALLATION
WARNING!
Wheel guard must be attached when using disc grinding
wheels. Always keep wheel guard between you and your
work while grinding.
To attach the wheel guard DISCONNECT tool from power
source.
Position the guard on spindle neck, then secure guard with
the collar screw.
LOCK NUT AND BACKING FLANGE
Your tool is equipped with a threaded spindle for mounting
accessories. Always use the supplied lock nut (and backing
flange) that has same thread size as spindle.
230V ~ 50Hz
850W
11,000min
-1
115mm
M14x2.0
22mm
2.0kg
SIDE HANDLE
The side handle used to guide and balance the tool can be
threaded into the front housing on either side of the tool,
depending on personal preference and comfort. Use the
side handle for safe control and ease of operation.
DISC GRINDING WHEEL ASSEMBLY (Fig.1)
Disconnect tool from power source. Be sure that wheel
guard is in place for grinding. Thread BACKING FLANGE
onto spindle, then place GRINDING WHEEL on the spindle.
Thread on the lock nut and tighten nut using the supplied
lock nut spanner, while holding the spindle lock in.
TO REMOVE: Reverse procedure.
MASONRY CUTTING WHEEL ASSEMBLY (Fig. 2)
For cutting masonry materials like brick, tile, stone, etc., it is
best to use a dry diamond cutting wheel.
Use only lock nut and flange with equal diameters.
WARNING! Do not use water or other cooling fluid with this
tool for cutting.
WARNING!
When using an abrasive cut-off wheel, be sure
to use only the special wheel guard designed
for use with cut-off wheels. Never use cut-off
wheel for side grinding.
Disconnect tool from power source before attaching cutting
wheel. With cut off wheel guard in place, assemble flange,
cutting wheel and lock nut. When cutting, make only small
passes through workpiece at a time.
Be aware that "Kickback" can occur at any time. Keep both
hands on tool for maximum control.
SANDING ACCESSORIES ASSEMBLY
WARNING!
Before attaching a backing pad be sure its
maximum safe operating speed is not exceeded
by the nameplate speed of the tool.
WARNING! Wheel guard may not be used for most sanding
operations. Always reinstall wheel guard when
converting back to grinding operations.
TO INSTALL BACKING PAD AND SANDING DISC (Fig. 3)
Disconnect tool from power source. Set the tool on its top
side (spindle up). Place the rubber backing pad onto the
spindle shaft. Center the sanding disc on top of the backing
pad. Insert the lock nut through the disc and thread onto the
spindle as far as you can with your fingers. Press in the
spindle lock, then tighten the backing pad securely with the
lock nut spanner.
TO REMOVE BACKING PAD AND SANDING DISC
Disconnect tool from power source. Using the lock nut
spanner unscrew the nut from the spindle, while holding
spindle lock in.
WIRE BRUSH ASSEMBLY
Before assembling wire brush to this tool, disconnect from
the power source. Wire brushes are equipped with their
own threaded hub, simply thread on to spindle. Be sure to
seat against shoulder before turning tool "ON".
4

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