Ryobi HP24 Owner's Manual download pdf (Page 20)

Worm Shaft and Pinion Gear Lubrication

The worm drive shaft and pinion gear lubrication box on the rear of the saw should be checked for

adequate grease lubrication periodically. Remove cover to check lubricant, remove the box by remov-

ing the four mounting screws that attach the box to the rear of the saw reservoir. Check the level of the

grease lubricant in the box by ensuring that gear box is filled so that at least 1/3 of the volume of the

box (up to 1 to 1 1/2 inches from bottom of box) such that the bottom of the bronze gear teeth are im-

mersed in the lubricating grease. A common automotive bearing lithium or moly type grease lubricant

should be used. The bronze pinion gear and worm shaft will need to break-in as the unit is first used

causing some heat to build up on the gear shaft and lubricant box during this initial break-in period.

The grease level in the box should be checked and refilled if necessary after approximately 2 to 3

hours of initial use, be sure the worm and bronze gear teeth mesh together. A premium grade wheel

bearing grease for high temperature use is recommended.

Worm drive shaft and pinion gear

lubrication box

Worm drive shaft and pinion gear

(cover removed)

Diamond Blade Change-Out

Hold blade in one hand and use a wrench to turn shaft nut counterclockwise and remove nut and

flange from shaft. After reinstalling blade, replace flange and nut and retighten. Do not over tighten

shaft nut.

Lubrication Points

Use premium grade wheel bearing grease when lubricating the saw. Clean the zerk fitting when fin-

ished lubricating. Apply grease slowly; stop when grease is seen between joints. Rotate blade and

driveshaft slowly by hand to spread grease uniformly into ball bearings.

V-Belt Inspection, Adjustment and Replacement

Look for frayed or split belts. Tighten belts for 1/2" to 3/4" of deflection from center of belt. Do not over

tighten.

HP18 & HP24 MAINTENANCE

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Ryobi HP24 Owner's Manual Page 20