Service manual

4
SERVICE INSTRUCTIONS
REASSEMBLY
— GENERAL
IMPORTANT: During reassembly of the complete tool, the
gear case should be tightened to the handle to 20 ft. lbs.
(27Nm). Wrenches can be ordered for performing this task.
All parts should be washed in a solvent and inspected for
damage or wear. Particular attention should be given to all
bearings, gears, gear pins, and rotor blades as failure of these
parts could cause damage to more expensive parts. Rotor
blades should be replaced if they measure less than 1/8"
(3.2mm) on either end. Rotor blades should be sized in length
to .003"/.004" (.08mm/.10mm) shorter than the cylinder.
Inspect and replace any "O"-rings or seals that show signs of
wear of deterioration. All gears, gear pins, and open bearings
should receive a generous amount of NLGI 2-EP grease
during reassembly. Reassembly of all of the various subas-
semblies is in reverse order of disassembly: however, the
following paragraphs list some of the more important reas-
sembly procedures.
CLUTCH REASSEMBLY
Clecomatic Clutch:
During reassembly of the clutch, all parts should receive a thin
coating of 10W machine oil. In addition, the ball retainer
203573, should receive a generous amount of NLGI 2-EP
grease. When installing the dowl pin 617226, the tapered end
goes into the clutch cam first. The trip slide 203612, goes into
the clutch cam cupped-end first. All parts installed into the
clutch spindle and clutch cam 203572, should be checked for
smooth operation before complete assembly of the clutch.
MOTOR REASSEMBLY
Install the rear rotor bearing, into the rear bearing plate
203506. If using new parts, check for burrs or nicks. After
installing new cylinder pins, check for burrs around pins. Press
the bearing plate assembly (press on the bearing's inner race)
onto the rear rotor shaft until there is approximately .0015"
(.04mm) clearance between the rear bearing plate and rotor.
TRIP ROD SIZING
The trip rod No. 203586, should be sized to allow approxi-
mately 1/8" (3.2mm) throttle valve opening.
IMPORTANT: During reassembly of the complete tool,
gear case should be tightened to handle to 20 ft. lbs.
(27Nm). Wrenches shown below can be ordered to tighten
the gear case and clutch housing.
SAFETY CHECK
After repair or replacement of parts, tools should be tested
to verify that they are functioning properly.
Replace blade if less
than 1/8"(3.2mm)
on either end.
.0015" (.038mm)
Clearance
34 204 - ARMSTRONG U.S.A.
203803-2
GEAR CASE WRENCH
C 471 3/4 - 2
203804-0
CLUTCH HOUSING WRENCH