YT 6800 Blade removal

[Toby]

looking for help on removing blades on my newly purchased YT 6800.
Bolt Size? RH or LH? How to keep shaft from turning with a round bored blade?

[rattosh51]

If I remember correctly, I believe it is a 14 or 15 metric size...there is a tool you can buy to keep blades from turning that bolts on to the deck at any big box store.