4.2 Blade brake clutch
(HRD535/K1 except Q type ~ 8106639 - HRD536/K1 ~ 8107479)
a.
Disassembly / Reassembly
CAUTION:
Do not turn the mower upside down.
1. Stop the engine and disconnect the spark plug cap.
2. Move the throttle lever to “STOP” position and turn the fuel shut-off valve (HRD536/K1
- HRD535K1), drain the carburetor.
3. Tilt the mower so the carburetor side up.
NOTE:
Before carrying out any operation on the Rotostop, release the Rotostop cable by
loosening the lock nuts of the handle and removing the Rotostop return spring.
[1]
WOODRUFF KEY
REASSEMBLY:
Insert the key into the crankshaft key way.
[2]
ROTOSTOP CABLE
ADJUSTMENT:
ch. 3.6
DISASSEMBLY:
Remove the cable stay.
REASSEMBLY:
Connect the Rotostop cable before tightening the stop screw.
[3]
BBC BOTTOM PLATE
INSPECTION:
ch. 4.2b
[4]
STOP SCREW
TIGHTNING TORQUE:
22 N.m
[5]
BLADE HOLDER SCREW
DISASSEMBLY / REASSEMBLY:
Loosen or tighten the blade holder screw with
holding the Rotostop lever.
TIGHTNING TORQUE:
55 N.m
[6]
BLADE
INSPECTION:
ch. 3.12
SHARPENING:
ch. 4.6
[7]
BLADE SCREW (2)
DISASSEMBLY / REASSEMBLY:
Using a wood block to prevent from turning.
TIGHTNING TORQUE:
55 N.m
[8]
LOCK WASHER (2)
REASSEMBLY:
Install the lock washer with “OUT” mark facing out.
[9]
SCREW, 6 x 14 mm
[10]
COLLAR
[11]
RETURN SPRING
REASSEMBLY:
Hook the one end to the BBC plate and the other end on the collar
using the screw driver as shown.
INSPECTION:
ch. 4.2b
[11]-1
RETURN SPRING
[11]-2
COLLAR
- 33 -
HRA536 - HRD535 - HRD536
[1]
[2]
[3]
[4]
[5]
[6]
[7]
[8]
[9]
[10]
[11]
[11]-1
[11]-2
22
55
55
- BLADE / ROTOSTOP
