Harry Bloomfield was thinking very hard :
wrote :
Another question. With the cutting height set to 5 the deck wheels are on
the ground so I don't see how it's possible to cut any shorter - is there
any adjustment on the cutter height setting?

Service manuals are usually online and free to download from the
manufacturers site.

If the deck is not raising itself up at all via the adjustment lever, it
seems the linkage might be adrift. You will need the longer cut lengths, for
the first cut of the season in spring, until you have the grass under
control.

http://www.countax.biz/imagestore/ma...%20-%2002).pdf

...might be the one?