Stihl MS 661 Magnum Saw Profile

Basic Information

STIHL
MS 661 M
Model name:MS 661MAGNUM®
Engine size:91.1cc
Power output:7.2
5.4
hp
kW
Weight
(powerhead):
16.5
7.5
lb.
kg
Bar length:16″…32″
Chain pitch:3/8″
Bar mount:3003

Compatible Bars

Stihl original bars

The MS 661 MAGNUM® takes all Stihl guide bars with the medium 3003 mount, 3/8″ pitch and either .050″ or .063″ gauge. The compatible original bars are listed in the table below. Recommended bar lengths are 20″ to 36″; other lengths in parentheses.

STIHL
3003 mount
3/8″ pitch
Length
[in.]
Chain
(rec.)
.050” gauge:33 RS3
Rollomatic
E Standard
16 in
18 in
20 in
60
66
72
Rollomatic
Super E
16 in
18 in
20 in
25 in
28 in
32 in
(36 in)
60
66
72
84
91
105
(114)
Rollomatic
ES Light
20 in
25 in
28 in
32 in
(36 in)
72
84
91
105
(114)
.063” gauge:36 RS3
Rollomatic
E Standard
16 in
18 in
20 in
60
66
72
Rollomatic
Super E
20 in
22 in
25 in
28 in
30 in
32 in
(36 in)
72
76
84
91
97
105
(114)
Rollomatic
ES Light
20 in
25 in
28 in
32 in
(36 in)
72
84
91
105
(114)

Oregon bars

Oregon offers a wide selection of MS 661 MAGNUM® -compatible guide bars in the D025 mount, 3/8″ pitch and either .050″ or .063″ gauge. The bars along with a recommended Oregon chain are listed in the table below (.063″ chains have poor availability). Lengths outside the recommended range in parentheses.

OREGON
D025 mount
3/8″ pitch
Length
[in.]
Chain
(rec.)
.050” gauge:
AdvanceCut™
SFH
20 inD72 / 72V072G
PowerCut™
RND
16 in
18 in
20 in
24 in
28 in
30 in
32 in
E60 / 72LPX060G
E66 / 72LPX066G
E72 / 72LPX072G
E84 / 72LPX084G
72EXL091G
no chain
72EXL105G
DuraCut™
ATM
18 in
20 in
24 in
no chain
no chain
no chain
.063” gauge:
AdvanceCut™
SFH
16 in
18 in
20 in
24 in
no chain
no chain
75LPX072G
75EXL084G
PowerCut™
RND
16 in
18 in
20 in
22 in
24 in
28 in
30 in
32 in
(34 in)
(36 in)
no chain
no chain
75LPX072G
no chain
75EXL084G
75EXL091G
no chain
75EXJ105G
(no chain)
(75EXJ114G)
VersaCut™
VXLH
16 in
18 in
20 in
24 in
no chain
no chain
75LPX072G
75EXL084G
DuraCut™
ATM
16 in
18 in
20 in
24 in
30 in
no chain
no chain
no chain
no chain
no chain