How do I clean the Bobby wheelchair safely?

Wipe all rigid parts with a damp (not drenched) cloth, using a mild soap suitable for varnishes and synthetics if necessary. The upholstery can be cleaned with lukewarm water and a mild soap, and abrasive cleaning agents should not be used. Never use a hose or high-pressure cleaner to clean the wheelchair, as moisture can cause damage. (Page 22)