Hi, I have a situation where for some reason, my mower will not stay in the height adjustment level selected. As soon as I move the mower, it jumps back to the lower level.
I have searched sites for a replacement height adjustment arm, to see if that's the problem, but no such luck in locating one.

Frank Chaundy, April 2017

Ransome Spares will sell you a height adjustment arm for £5.45

https://tinyurl.com/k7bh6ms

There's also an exploded parts diagram -
items 41 (the arm) - 34 (link arm) - 35 (spring) 33- 28 - and 36 (all spacers) set the height.

Good Luck..., April 2017