Chipping Blade Sharpening Tips, To Adjust

You do not have to removetherotorfromthe mainframetorepairthe chipperbladesorpaddles locatedonthebackofthe rotorassembly.

S E R V I C E A N D M A I N T E N A N C E

sharpened by a professional. Be careful when grinding if using a bench grinder so the blade material does not get too hot and change color–this will remove the blade's special heat treated properties. Use short grinding times and cool with water. Remove an equal amount off each blade to maintain balance. Replace the chipping blades and tighten bolts to 75 ft. lbs. Close cover and replace bolts.

Chipping Blade Sharpening Tips

Poor chipping performance is usually a result of dull chipping blades. Check for the following symptoms if chipper performance has decreased:

•Severe vibration when feeding material into the chipper.

•Small diameter branches do not self-feed.

•Chips discharge unevenly or have stringy tails–especially when chipping green branches.

Check for permanent damage before you sharpen the chipping blades.

Replace the blade if:

•The blade is cracked (especially around the bolt holes) or the edges are too deeply chipped to be ground smooth.

•The base of the cutting edge is worn or has been re-sharpened so it is too close to the rotor chipping slot.

SettingChippingBladeClearance

The four-edged chipping anvil located directly under the chipper chute should clear the chipping blade by 1/16 inch to 3/16 inch. The chipping anvilisadjustableandreversible.

To Adjust:

1.Lift rotor access cover and expose rotor (see figure 8, page 12). Loosen the three 1/2" bolts holding the chipper anvil to the frame.

2.Measure the amount of clearance between chipping blade and chipping anvil from inside of housing.

3.Adjust inward or outward to desired measurement.

4.Tighten bolts on chipping anvil to 75 ft. lbs. and resume operation.

Remove the three bolts holding the anvil and use one of the other three edges if the chipping anvil edge is damaged or worn unevenly. Adjust for correctmeasurement.

PN-51210 (Rev. 7/98)