6
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Flange (84), wheel, Flange Nut (85). Install the Wheel Retaining
Screw Washer (88) in the recess in the Wheel Flange and install the
Wheel Retaining Screw (87) in the end of the Arbor and tighten
it securely.
For models ending in H64
, install wheel against flat face on
6.
Arbor and install the Flange Nut (85).
Assembly Instructions for Ergo Handle
Thread the Ergo Handle (75A) into the Angle Housing (67).
Troubleshooting Guide
Troubleshooting Guide
Trouble
Probable Cause
Solution
Low power or low free speed
Insufficient air pressure.
Check air line pressure at the Inlet of the Tool. It
must be 90 psig (6.2 bar/620 kPa).
Clogged muffler elements.
Disassemble the Inlet and remove Exhaust
Diffuser to replace Mufflers for Rear Exhaust.
Disassemble Front Clamp Nut and remove Front
Cap for Front Exhaust. Ensure muffler is in Front
Cap and not pushed down into Motor Housing.
Plugged Inlet Screen.
Clean the Inlet Screen with a clean, suitable
cleaning solution or replace the Screen.
Worn or broken Vanes.
Install a complete set of new Vanes.
Loose Clamp Nut or Arbor Housing.
Tighten the Nut or Housing between 20 and 25
ftlb (27 and 34 Nm) torque.
Worn or broken Motor Housing
Replace the Motor Housing.
Grit buildup under the Throttle Lever
restricting full Throttle Valve Plunger
movement
Remove the Throttle Lever and clean the groove
in the Motor Housing.
Bent stem on Throttle Valve.
Replace the Throttle Valve.
Front Seal Cup Assembly dragging
against the shield of the Front Rotor
Bearing
Reposition the Front Seal Cup Assembly.
Excessive runout
Bent Arbor.
Replace the Arbor.
Loose Collet Nut.
Tighten the Collet Nut until snug.
Worn or damaged Collet, Collet Nut or
Nosepiece.
Replace the damaged component and retest.
Worn or damaged Upper Arbor Bearing
or Lower Arbor Bearing.
Replace the worn or damaged Bearing.
Scoring of End Plate
Worn Front End Plate Spacer or Front End
Plate.
Install a new Front End Plate Spacer and Front
End Plate.
Worn Front Rotor Bearing.
Install a new Front Rotor Bearing.
Leaky Throttle Valve
Dirt accumulation on Throttle Valve or
Throttle Valve Seat.
Disassemble, inspect and clean parts.
Worn Throttle Valve or Throttle Valve
Seat.
Replace the Throttle Valve and/or Throttle
Valve Seat.
Excessive dirt build-up beneath the
Throttle Lever.
Clean out the slot area.
Bent Throttle Valve Plunger.
Replace the Plunger.
