Lawn Mower Fanatic, thanks for the reply. A good friend I talked to has had 3 hydrostatic Honda mowers over the years and highly recommends them. I read somewhere that a person had problems backing up the self propelled mower, that there was some type of ratcheting or the like. I'm not sure what this meant, but if I buy the HRX217HYA, I have areas where I would have to back up the mower to change directions, such as in some tight spots in my yard, and I don't want to have any problems. I tried out my daughters HRX217VLA, with the Smart Drive, and that one backed up, of course by pulling it by hand, and there wasn't any ratcheting or the like. My daughter sometimes just pushes the mower in tight spots without using the self propel and doesn't seem to have any issues. Sometimes there is too much information to digest in these forums and reviews, some good and some bad. Its hard to sift out the legitimate facts and not just somebody's emotions at the time.
Have you ever heard about this "ratcheting" situation while moving these mower backwards?
Please advise.
Thanks again.
It's true there have been some issues with SmartDrive mowers having some difficultly rolling backwards. Sometimes its is a cable adjustment, other times (worse possible case) the entire transmission must be replaced. It's not widespread, but does effect more models than the hydrostatic drive ("Cruise Control") models.
The ratcheting is a normal noise in ALL Honda self-propelled models, both SmartDrive and Cruise Control (hydrostatic):
---engine OFF
---Drive clutch RELEASED
---Pushing mower FORWARD
Under the above conditions, all self-propelled Honda mowers will have a ratchet/clicking sound from each rear wheel. 100% normal.
Now, you WON'T hear the ratchet noise when pulling the mower BACKWARDS, and only do this when the drive clutch is released. This will minimize the drag/effort required to roll the mower backwards (engine can be ON or OFF).
FYI, Honda has had the hydrostatic drive in production for nearly 25 years. It's changed a bit, but the basic function of a belt or shaft-driven hydraulic pump that uses a swash plate to control hydraulic pressure to a hydraulic motor (that turns the rear axle) is the same.
Now the SmartDRIVE has been around for about six years. The first versions had an input pulled that was under constant rotation/tension from a drive belt off the crankshaft. Operating the control engaged an internal clutch inside the transmission to adjust the speed. Last year, the design was revised, and the internal clutch eliminated. Now, operating the control progressively tightens/loosens the tension on the belt driving the input pulley, adjusting the speed faster the tighter the belt is engaged.
All versions of SmartDRIVE and Cruise Control offer variable speed operation, but take a different (cost+/-) approach to the problem.
Finally, HRX models have a five year warranty, and HRR models get a three year warranty, regardless of the transmission installed.