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Service Manual
SEC.20-1
Check the Knee Lifter (1)
Adjustment
1. Remove front cover and back cover. And remove AC board.(picture.1)
2. Loosen two screws (A) at the picture 2. If the screws (A) are loosened, lever (B) will be
pulled up due to spring. And then press down the lever (B) which is connected with rod (D)
and tighten screws (A) when the knee lifter and arm are still attaching with each other like
(C) on the picture 3.
The tip of screw (H) on the picture 4 should be
directed into flat surface on the drawing 1.
Original issue
May 2014
Page 44／64
Model
XL-420
flat surface
| 44
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