J&D MAnufacturing JD-VMSA72N Instruction Manual - Assembly Side View
3
Using the measurements below and a 3/16” drill bit, drill a total of 14 holes
in the housing flange 1/2” from the flange edge.
16½”
33”
49½”
66”
16½”
33”
49½”
66”
20¾”
41½”
60¼”
20¾”
41½”
60¼”
IS183-12H
J&D Manufacturing • 6200 Hwy 12 • Eau Claire, WI 54701 • 1-800-998-2398 • www.jdmfg.com
Page 2 of 4
1
Using a 3/8” drill bit, drill a hole in the top of the venturi 1” from the edge.
Place guard inside venturi opening and secure top of guard to top of venturi
by inserting a 5/16” Phillips Truss Bolt through guard mounting foot, then
through recently drilled hole in venturi. Secure with a 5/16” Nylock Nut. Do
the same for the bottom guard mounting foot. Do not tighten nuts and
bolts at this time.
Nut
Cone
Guard
Mounting
Foot
Bolt
Assembly Side View
{
1”
2
Mark all remaining guard footing locations 1” from venturi edge. Drill holes
using 3/8” bit and insert bolts and nuts exactly as you did in step #1. Once
all bolts and nuts are installed, go back and tighten each securely.