Fisher Paykel Washing Machine Model

Appliance parts like are generally specific to the manufacturer and possibly model. My usual approach, which has served me well, is:

1. Find the manufacturer's service website.
2. Do a parts search there, based on the model # and part description. Ideally, check the existing part for a label.
3. If that doesn't work, look for a parts diagram of your model. Often these include part IDs expressly for the purpose of ordering replacements.
4. Based on the part number identified in step 2 or 3, search on google and ebay for the part. Usually you can find it from a third-party retailer for significantly less than ordering direct from the manufacturer.

You might also try a local appliance repair parts store -- they may be able to guide you to find the right part if they are familiar with your brand of appliance.

Yes, your washing machine should be level and all legs should be squarely on the floor. If it's not, you'll have unbalanced forces acting on it as the drum spins. During the spin cycle, these forces are much larger because of the higher spin speeds and will make it "walk".

You'll need a spirit level to balance the washer. There's usually a gap between the top plate and the side plate of the washer that you can rest the level in to measure the front-to-back tilt. For the side-to-side tilt, generally just put the level on the top of the washer. You may have lock-nuts on the legs: if so, loosen them with a wrench before trying to adjust the washer, and tighten them afterwards. Raise or lower the legs until all four are solidly on the floor; the washer should not rock at all. If you have to move the washer to adjust it, remember to check it once it's back in its place.