Maintenance - Ryobi BGH6110SB Operator's Manual

SHARPENING TWIST DRILL BITS
See Figure 9, page 13.
Drill bits are best sharpened on a sharpening jig (available at
most hardware stores). Begin on one side of the point at the
existing angle, then twist the bit while maintaining contact
with the grinding surface. Sharpen only the tip.
This technique requires considerable practice, so take your
time and make a few "dry runs" first with the grinder off. Be
sure to maintain the original cutting edge angle as this is
important to the efficiency of your bits.
SHARPENING LAWN MOWER BLADES
See Figure 10, page 13.
Lawn mower blades are usually sharpened on only one edge
and dressed up slightly on the other. Perform this sharpening
WARNING:
When servicing, use only identical replacement parts.
Use of any other parts could create a hazard or cause
product damage.
WARNING:
Always wear eye protection with side shields marked to
comply with ANSI Z87.1. Failure to do so could result in
objects being thrown into your eyes resulting in possible
serious injury.
GENERAL MAINTENANCE
Avoid using solvents when cleaning plastic parts. Most
plastics are susceptible to damage from various types of
commercial solvents and may be damaged by their use. Use
clean cloths to remove dirt, dust, oil, grease, etc.
WARNING:
Do not at any time let brake fluids, gasoline, petroleum-
based products, penetrating oils, etc., come in contact
with plastic parts. Chemicals can damage, weaken or
destroy plastic which could result in serious personal
injury.
NOTE: FIGURES (ILLUSTRATIONS) START ON PAGE 11 AFTER
FRENCH AND SPANISH LANGUAGE SECTIONS.
OPERATION
process on both cutting ends of the blade. After sharpening,
be sure to balance the blade by removing additional material.
NOTICE:
An unbalanced lawn mower blade may cause excessive
vibration which will damage the lawn mower.
SHARPENING CHISELS AND SCREWDRIVER
BLADES
See Figure 11, page 13.
When sharpening chisels and screwdrivers, work rest should
support the chisel at the correct angle against the wheel.

MAINTENANCE

LUBRICATION
All of the bearings in this tool are lubricated with a sufficient
amount of high grade lubricant for the life of the unit under
normal operating conditions. Therefore, no further lubrica-
tion is required.
WHEEL REPLACEMENT
See Figure 12, page 14.
If you must replace a grinding wheel, be sure to obtain one
with a safe rated speed at least as high as the "no load
speed" RPM marked on the data plate of the grinder and
which is marked to comply with ANSI B7.1.
To replace the grinding wheel.
 Unplug the grinder.
 Remove the wheel cover by loosening the screws.
 Loosen the wheel nut in a clockwise direction for the left
side and a counterclockwise direction for the right side.
 Remove the outer flange and grinding wheel.
 To install a new grinding wheel, reverse the above pro-
cedure.
NOTE: Be sure the grinding wheel and outer flange are
properly seated on the spindle shaft.
WIRE WHEEL REPLACEMENT
See Figure 13, page 14.
When replacing the grinding wheel with a wire wheel, it is
necessary to place a spacer on the spindle shaft BEFORE
installing the inner flange, wheel, outer flange, and wheel nut.
10 — English
(NOT INCLUDED)