Parklander is a brand applied to various manufacturers' products. Their ride on mowers are made by Murray. Their 30" mid-engined model is a Murray 309029X92C.
There are several ways you can get the owner manual. The first is to contact Parklands Power Products, and ask for one:
http://www.parklands.net/products/ride-on-mowers/mid-engine/309029X92NThe second way is to ask Bruce, the Outdoorking site owner, and a Parklands dealer, to upload the manual.
The third way is to look on the back of the mower or under the seat to get the correctly formatted number to match their prefix etc, then download the manual from the Murray site:
http://www.murray.com/us/en/support/manuals/Murray's system is a bit weird, at least in my opinion, in that special information is included in the model number, telling them which distributor handled the mower. Their head office website's database may not include the Parklands distributor, so you may not get much sense out of it. All in all, it is probably best to just ask Bruce.