2
SERVICE INFORMATION
SRM-3805
SRM-4605
1 SERVICE INFORMATION
1-1 Specifications
OD: Outer diameter.
ID: Inner diameter.
*Without shoulder harness and cutter head.
**With standard cutter head.
***Install and use U-shaped handle when operating with steel blade.
Model
SRM-3805 (L) SRM-3805 (U) SRM-4605(L)
SRM-4605(U)
Dimensions Length*
mm(in)
1820 (71.7)
1820 (71.7)
1820 (71.7)
1820 (71.7)
Width
mm(in)
360 (14.2)
720 (28.3)
360 (14.2)
720 (28.3)
Height
mm(in)
350 (13.8)
455 (17.9)
350 (13.8)
455 (17.9)
Dry weight**
kg(lb)
8.1 (17.9)
8.7 (19.2)
8.1 (17.9)
8.7 (19.2)
Engine
Type
KIORITZ, air-cooled, two-stroke, single cylinder
Rotation
Counterclockwise as viewed from the output end
Displacement
cm
3
(in
3
)
37.4 (2.284)
45.7 (2.790)
Bore
mm(in)
38.0 (1.496)
42.0 (1.654)
Stroke
mm(in)
33.0 (1.299)
33.0 (1.299)
Compression ratio
6.3
6.6
Carburetor Type
Diaphragm, horizontal-draught
with primer
without primer
Model
WALBRO WT-297
WALBRO WT-120B
Venturi size-Throttle bore mm(in) 11.11 - 15.85 (0.437 - 0.624)
12.7 - 15.85 (1/2 - 0.624)
Ignition
Type
Capacitor discharge ignition system
in a single integrated piece
Spark plug
Champion RCJ-7Y
Starter
Type
Automatic rewind
Rope diameter x length
mm(in)
3.8 x 950 (0.15 x 37.4)
Fuel
Type
Premixed two-stroke fuel (Refer to Operator's manual.)
Tank capacity
cm
3
(U.S.fl.oz.)
950 (32.1)
Clutch
Type
Centrifugal, 2-shoe pivot
Handle
Type
Front Crescent loop
U-shaped
Crescent loop
U-shaped
Rear
Integrated
---
Integrated
---
control grip
control grip
Drive shaft Type
Solid
Diameter - Length
mm(in)
8 - 1590 (0.31 - 62.6)
Housing
OD - ID mm(in)
28 - 24.0 (1.10 - 0.94)
(Main pipe)
Length mm(in)
1530 (60.2)
Gear case Reduction ratio
1.33
Gear tooth
Spiral bevel gear
Lubrication
Lithium based grease
Cutter
Type
Nylon line cutter, 8-tooth blade***, 80-tooth blade***, Others
Pilot diameter
mm(in)
25.4 (1.0)
Fastener type, size
mm
Left-hand thread nut, M10 x 1.25 pitch
Cutting rotation
Counterclockwise as viewed from top
