The time between professional sharpenings can be extended by using the HandiHone Sharpener or the Clipper Blade Sharpening Kit . They greatly reduce the time, cost and hassle of sending blades out to be sharpened so often, and can be done in a matter of minutes. The cost of the kit and taking a little time to master the technique will be repaid many times over. Clipper Oiling The motor of an Oster clipper might develop a squeal after a period of time. If this occurs, simply apply one drop of Oster Lubricating Oil into the clipper's oil port.
Some clippers have two ports.
Do not use typical household oils, and do not over-oil. This may cause irreparable harm to the clipper. If a clipper runs slower than usual or seems to lose power, it may indicate worn carbon brushes. Check them regularly to ensure the proper length. Both brushes must be changed when worn to half their original length.