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Operation - Ryobi HBG620 Owner's Operating Manual

150mm (6") & 200mm (8") bench grinders

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BENCH ATTACHMENT
Fasten grinder to work bench before
operating this machine. There is a hole
on either side of the base which should
be used to secure the grinder.
2 x 10mm diameter bolts should be used to
secure the grinder to the bench or stand.

OPERATION

1. Eyeshields Adjustment
The see-through eyeshield allows users to see operation clearly, work precisely.
Eyeshields can be adjusted up and down.
2. Tool Rest Adjustment
The appropriate adjustment of tool rests provides the correct working angle to do efficient
grinding. This adjustment can be done by regulating its related screw. Due to normal wear
of the grinding wheel, it is necessary to adjust the tool rests from time to time.
3. Changing the Grinding Wheels
To replace worn grinding wheels, the necessary steps are listed below:
A. Disconnect the power supply, disassemble outside covers left or right.
B. Remove the three screws and nuts holding the outside wheel guard.
C. Hold grinding wheel firmly. Remove the nut and flange on the shaft by using
proper tool. Left wheel nut has left hand thread. Right wheel nut has right hand thread.
D. Take off used wheel and replace with a new one.
E. Assemble the flange, nut and outside cover in reverse order. To ensure good
balance, make sure the surface between the grinding wheel and the flanges are smooth.
F. Replace the three screws and nuts holding the outside wheel guard and replace.
G. Switch on the machine and let it run for one minute idle rotation to check before
using under load.
Eye shield
Toolrest
Coolant Tray
Page 5
Bench
Attachment
holes
12V light
Opti View
Eye Shield
Wheel
Dressing
Tool
On-Off Switch

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This manual is also suitable for:

Hbg825a