Personally I wouldn't use that particular jack for what you want to do. I use it in combination with my lift table for raising one end of the bike or the other while on the lift.
I also have a Costco special that cost me $69.95 about 10 years ago. I use it for cleaning and storage - works great.
Harbor freight has some low cost jacks that will be much safer than this model for what you want to do. Be sure to clip a 20% off coupon from any m/c or hot rod mag.

 

I have purchased and used several BW items from discount ramp, and they have all been good quality.

I have the 3 piece loading ramp, and have ordered a few others. I also have the scissor jack and it works great, use it anytime that I have a bike on the table lift and I want to pick up just the rear off the table. It would be fine for other uses but I have a rolling bike jack that I use for the other purposes, so I have never used the scissor jack except for on the table lift.

 

THE blackwidow sisor jack is a nice little jack for the dough . i also have the harbor frieght yellow lift i bought it for $59 plus tax used the coupon

 

Been looking for a good cheap scissor jack, thanks!
Jerry