I just finished this job on my HR214 with a GXV120 engine. I tried the wrench + hammer combination but couldn't get it to budge. Here's what I did:
- Take the recoil starter and cover off the engine. Notice that the flywheel isn't a perfect circle on the outside circumference, there are places where it's notched in, including the area where the magnet is which triggers the coil.
- Using a longish screwdriver, jam the flywheel so it cannot turn using one of the notches and part of the crankcase body.
- Unbolt the center bolt on the blade clutch assembly. This is VERY tight, I used a 3-foot pipe extension on my ratchet handle.
The center bolt and the flywheel bolt are both regular right-hand thread. I had attempted to hold the flywheel bolt with one wrench whilst undoing the center clutch assy bolt but only succeeded in unbolting the flywheel bolt.
There is no need to a puller for the driven disk. It looks pressed in, but it is not. Lever at it from two sides with screwdrivers and it should pop right off.
Steve Chang, July 2008