All dimensions are in inches (millimeters).
Appendix D—Outline Dimensions
D. Outline Dimensions
Appendix D—Outline Dimensions
Models 91–691 and F91–F691 Bare with Flywheel
M
M1
Inlet Outlet
M
M1
S
Model A B C D E F G H J K
91, F91
1-13/16
(46.0)
2-3/8
(60.3)
3-11/16
(93.7)
13/32
(10.3)
5/8
(15.9)
6-1/4
(158.8)
3-7/8
(98.4)
25-5/16
(642.9)
5
(127.0 )
22-11/16
(576.3)
291, F291
3-3/8
(85.7)
4-1/8
(104.8)
3-11/16
(93.7)
7/16
(11.1)
25/32
(19.8)
9-13/16
(249.2)
12-1/16
(306.4)
25 -11/16
(652.5)
5-3/8
(136.5)
23-3/8
(593.7)
491, F491
4-1/8
(104.8)
5
(127.0 )
4-11/16
(119.1)
1/2
(12.7)
11/16
(17. 5 )
10 -11/16
(271.5)
13-3/16
(335.0)
29-5/8
(752.5)
5-7/8
(149.2)
26-3/16
(665.2)
691, F691
4-3/4
(120.7)
5-1/2
(139.7)
5-3/8
(136.5)
9/16
(14.3)
1
(25.4)
14-1/2
(368.3)
14-3/8
(3 65.1)
39-1/8
(993.8)
8-1/4
(209.6)
35-1/16
(890.6)
Model M* M1** P Q R S*** T A-belt Groove B-belt Groove
91, F91
2-3/8
(60.3)
4-1/4
(108.0)
3
(76.2)
14
(355.6)
1-1/8
(28.6)
1-1/4
(31.8)
1/4
(6.4)
13.2
(335.3)
2
13.6
(345.4)
2
291,
F291
2-5/8
(66.7)
4-1/4
(108.0)
3
(76.2)
16
(406.4)
1-1/4
(31.8)
1-1/4
(31.8)
1/4
(6.4)
15.2
(3 86.1)
3
15.6
(396.2)
3
141
(3,581.4)
13.21
(335.5)
2
13.61
(345.7)
2
491,
F491
3-7/8
(98.4)
5-5/8
(142.9)
3
(76.2)
16
(406.4)
1-3/8
(34.9)
1-1/4
(31.8)
5/16
( 7. 9)
15.2
(3 86.1)
3
15.6
(396.2)
3
141
(3,581.4)
13.21
(335.5)
2
13.61
(345.7)
2
691,
F691
6-5/16
(160.3)
6-15/16
(176.2)
3-13/16
(96.8)
19 -1/2
(495.3)
2-1/8
(54.0)
—
1/2
(12.7)
— —
19 -1/8
(485.8)
4
42