Yost Vise 908-HV, Manual

To avoid risk of personal injury, equipment damage, fire & shock, make sure work area 
has the following conditions: 
 



Floor is dry.  Damp, wet or rainy conditions can cause operator to slip. 



Operator must be of sufficient age to operate vise in a safe condition. 



Well Lit. 



Clean and unobstructed. 



Workbench is properly secured to floor or wall. 



Workbench is designed sufficiently to handle vise and work load (torque placed 
upon the vise and workbench). 

Mount Vise To A Secure Workbench 

1.

Place vise on the workbench to identify location of mounting holes. 

2.

For added strength to the workbench prior to installing and securing vise, place an 
18” x 18” x 2” piece of wood (18” x 18” x ¼” metal plate) to the underneath side 
of the workbench.  

3.

Mark and drill holes through the workbench and wood / metal plate using the 
swivel base as the template for the mounting holes.  Prior to drilling, make sure 
area is free & clear of any hazards.  

   
4.

 Install proper length & diameter bolts into the swivel base of the vise.  Yost 
recommends at the minimum the following configuration: 
Install proper length & diameter bolts along with flat washer through the swivel 
base of the vise.  The bolt should be long enough to protrude at least 1” beyond, 
the underside of the workbench and wood / metal plate.  On the underside of the 
workbench and wood / metal plate, place a flat washer, lock washer and locking 
nut to the bolt.  Securely tighten vise to the workbench.  Periodically, recheck and 
re-tighten the nuts.   
 

Vise Operation 

 
Make sure vise selection (size and type) is appropriate for use and application.  Larger 
vises are readily available through Yost Vises.  Never force or use cheater bars, pipe 
extensions on the screw handle of the vise as this places excessive pressure on the vise 
components and they may fail resulting in severe bodily injury.  
 
Step 1:  Make sure vise is securely mounted to the workbench. 
 

Step 2:  Make sure the swivel base lockdowns are secure. 
 

Step 3:  Open the vise by turning the vise handle counterclockwise.  Do not open 

beyond the vises rated capacity (jaw opening).