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6.  Stand the Disassembly Arbor from the Tool Kit, large end 

downward, on a workbench or the table of an arbor press. Insert 

the output end of the Drive Shaft into the central opening and 

either tap the Housing downward off the components or use the 

Pressing Sleeve in the Tool Kit to press the Housing downward off 

the components. (Refer to Dwg. TPD1268)

PRESSING

SLEEVE

HOUSING

TAP EDGE LIGHTLY

WITH BRASS HAMMER 

OR USE PRESSING 

SLEEVE FROM TOOL 

KIT

 

DISASSEMBLY ARBOR

FROM TOOL KIT

(Dwg. TPD1268)
7.  Disassemble the components of the mechanism in the sequence 

shown in manual 16574782.

Disassembly of the Motor

Grasp the Motor Housing (1) in vise jaws with the Motor Housing 

Cover (31) up.

Remove the Motor Housing Cover Bolts (28). Remove the Motor 

Housing Cover and Motor Housing Cover Gasket (32) from the 

Motor Housing.

Secure the Motor Housing in vise jaws with the motor bore in a 

horizontal position and handle pointing down. Using a plastic 

hammer, lightly tap the Housing surrounding the motor bore to 

loosen the motor. Tap Front End Plate and take the assembled 

motor out of the Motor Housing.

Remove the Front End Plate (41), Front End Plate Bearing (42), 

Cylinder Assembly (37) and Vanes (40) from the Rotor.

On the table of an arbor press, support the Rear End Plate (36) 

with blocks as close to the Rotor as possible and press the Rotor 

out of the Rear End Plate and Rear Rotor Bearing (35).

To remove the Rear Rotor Bearing from the Rear End Plate, use a 

small drift or pin punch through the central opening of the Rear 

End Plate to tap the Bearing out of the End Plate. (Refer to  

Dwg. TPD1271)

NOTICE

Do not enlarge or damage the shaft hole in the End Plate.

1.

2.

3.

4.

5.

6.

(Dwg. TPD1271)

Disassembly of Throttle and Exhaust Element

Remove Rubber Grip (11).

Using a pin punch, tap the Throttle Retaining Pin (12) out of the 

Handle. The Throttle Retaining Pin is protected by an embossed 

circular pad of metal. Insert the pin punch into the middle of the 

pad to locate the Pin. (Refer to Dwg. TPD1272)

(Dwg. TPD1272-1)
3.  Grasp the Trigger (24) and pull the assembled throttle out of the 

Motor Housing.

4.  Using a pin punch and without damaging the Trigger, remove the 

Trigger Pin (23). Slide the Trigger off of the shaft of the Throttle 

Rod (14).

5.  Grasp the Reverse Lever (25) and pull the Reverse Valve (27) from 

the front of the Throttle Bushing Assembly.

6.  Remove the Throttle Rod Assembly from the rear of the Throttle 

Bushing.

7.  Remove Throttle Rod O-ring (13) from the Throttle Rod.

8.  If it is necessary to replace the Reverse Lever or Reverse Valve, 

use a pin punch to tap out the Reverse Lever Pin (26) out of the 

Reverse Lever. Separate the Reverse Lever from the Reverse Valve.

9.  Unscrew and remove the Hose Joint (5).

10. This will allow the Exhaust Cover (8) and Exhaust Elements (9, 9A, 

9B) to be removed from the Hose Joint.

11. Remove the O-ring (10) from the Motor Housing.

1.

2.

 Assembly
General Instructions

When grasping a tool or part in a vise, always use leather-covered 

or copper-covered vise jaws to protect the surface of the part 

and help prevent distortion. This is particularly true of threaded 

members and housings.

Always press on the inner ring of a ball-type bearing when 

installing the bearing on a shaft.

1.

2.

Always press on the outer ring of a ball-type bearing when 

pressing the bearing into a bearing recess.

Except for bearings and mechanism parts, always clean every part 

and wipe every part with a thin film of oil before installation.

Wipe a thin film of mechanism fluid on all internal mechanism 

components before installing them in the mechanism.

Apply a film of O-ring lubricant to every O-ring before installation.

3.

4.

5.

6.

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