Hitachi CS 51EA, Service Manual, Page: 11 / 35

-10-
Damper [124]
Damper Set Bolt [15]
Nut M6 [10]
Rear handle ass’y
Spring Holder [155]
Antivibration Spring [157]
Engine case ass’y
Fuel Pipe [68]
Rear Damper [88]
Ɣ Rear handle and engine case
4. Disassembly and reassembly of the rear handle and engine case
[Tools required]
Ɣ Flat-blade screwdriver
Ɣ Box end wrench 10 x 19 mm
(1) Disassembly
Ɣ
Remove the Fuel Pipe 2.5 x 4 x 90 [43] from the
Priming Pump Comp. [44] .
Ɣ Secure the Spring Holders [155] [12] by inserting a
flat-blade screwdriver into the groove of the bolt,
and then use a box end wrench 10 x 19 mm to
remove Nut M6 [10] .
Ɣ
Remove the Damper [124] , and then use a
flat-blade screwdriver to remove the two Damper
Set Bolts [15] . Also remove the Rear Handle [146] .
(2) Reassembly
Reassembly can be conducted by reversing the
disassembly procedure. However, special attention
should be given to the following items.
Ɣ
Insert the Antivibration Springs [157] [14] so that their first coils do
not protrude from the first coils of the Spring Holders [155] [12] .
(See the illustration above.)
Ɣ
Apply 0.1 to 0.3 g of Chemiseal L-391 (manufactured by Chemitech
Inc.) to the bolts of the Spring Holders [155] [12] or on the female
threads of Nut M6 [10] .
Ɣ Secure the Spring Holders [155] [12] by inserting a flat-blade
screwdriver into the groove of the bolt as illustrated on the right,
and then tighten Nut M6 [10] so that the Spring Holders [155] [12]
do not rotate when you turn the screwdriver by using a box end
wrench 10 x 19 mm.
Ɣ
Use the box end wrench 10 x 19 mm to hold Nut M6 [10] in place, and then use a torque wrench with a
flat bit to tighten the bolts of the Spring Holders [155] [12] at the specified torque of 5.5 ± 0.5 N•m (56 ±
5 kgf•cm).
CAUTION: Do not twist the Fuel Pipe [68] between the rear handle and engine case.
Ɣ Tightening Nut M6 [10]
Nut M6 [10]
Ɣ
Assembling the antivibration structure of coil spring
1 mm or less
The Antivibration Springs [157] [14] should not protrude
from this surface of the Spring Holders [155] [12]
.
Rear Handle [146]
Flanged Tapping
Screw D6
[156]
Antivibration
Springs
[157] [14]
Spring Holders [155] [12]