The Takara Belmont / Koken Hydraulic Pump PART: CONTROL LEVER (LEFT) part #P99123 as shown HERE
* This is a Steel casting part that attaches to the Pump Housing and the Down Pedal (Left #P99121)
* This part "Pushes the Down Valve (#P99127) down allowing the shaft (chair) to lower
* fits Belmont / Koken #180 or E4C Electric Hydraulic Pump
* Reference: Part # P99123 in picture
* Approximate Measurements: 1/4" thick  x  4" long  x  2"  wide  x 1-3/4" tall
* Special Order Part: often 1 piece in stock but if out of stock or more need then Please allow  14 days to ship then 3 - 7 days to deliver
* 1 - Only Steel Part

Why will you need this part ?
Answer:  After years of use all steel castings will just ware out or break, and will need to be replaced.