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Discussion Starter · #1 ·
I have a Harmony HRM 215 SXA model# MZBB 6042129.
Drive wheels-should both be powering the mower forward?
I can grip the left wheel and stop it, but not the right wheel when handle is pulled to activate the drive.
This was a freebee mower and I am debating about any money to spend on it. Starts and runs good after a carb cleaning, but the drive seems funky.
Thanks
 

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The wheel might be stripped where the gear engages it would be a guess, There is a couple of sharp Honda guys here that could tell you right off the bat.
 

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Here is a parts diagram of the rear wheels where you can see the geared wheels. Hope this helps!
HRM215 - HRB215 rear wheels.gif
 

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Discussion Starter · #4 ·
No, I used the same wheel just swapped sides. I have the mower up on a platform without wheels to check this out easily. Teeth all look good on both wheel and sprocket on mower.
 

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Maybe it s a "limited slip" feature so you can turn the mower without having direct drive to the wheels in a turn so you don't strip the wheel gear,
This is only an assumption as I am not familiar with these Honda's. I don't want to mislead you.
 

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Looks like by this pic of your tranny, there may be something like that going on, I just can't find an exploded view of the tranny at this time to see how its set up.

HRM215 - HRB215 Tranny.gif
 

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Discussion Starter · #7 ·
I was thinking the half moon key and spring (on the parts diagram-thanks for posting) would act like the "differential" but maybe not.
 

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Did you check that, maybe it sheared or worn down and just friction is turning the wheel until you hold it and create resistance??

Looks like the new trannys run @$140 +- :(
 

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Discussion Starter · #9 ·
Yup, checked those out first all OK. Ya, that is why I ask about traction over new. $$$$$$$$ and no internal parts available. Runs good and would be a good mower for kids to use to make a buck in the neighbors yards. I have a rider for our own yard.
 

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Not a bad idea, I have a craftsman I picked up for $5, rebuilt the carb and runs fine but has a drive issue. Keeping it to mow the chicken run.
:ROFL
 

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Hi Hipster,

You are right about the half moon key and spring acting as the differential. When pushed faster than the engine and transmission engagement calls for, the y will "slip" inside the beveled edges on the inside of the pinion gear.

There's a right way and wrong way for those pinion gears to go onto the drive shaft shaft. They will engage the right way, and not engage when put on wrong. In fact, there is a dot stamped onto the outside edge. That stamped dot goes to the inside on the left wheel, and to the outside on the right one. Check the orientation of the one that slips.

Hope that helps.
 

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Discussion Starter · #13 ·
Thanks for the "dot" position-will confirm where they are.
I tried flipping the drive gear first and same result-I could hold the wheeel from spining.
Guess I will put the wheels on and try it on the ground.
They do pull evenly tho right?
Before I started to "take apart" the mower I could get it running and the drive was "iffy" at best. I could feel the right wheel grab.
Will let you know.
 

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Yep, they should pull evenly. There is no differential in the transmission. Only in gear or not. You should be able to turn the wheels one way and you will hear those half moon things clicking, but turn them the other way and they will engage the pinion.
 

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Discussion Starter · #16 ·
Checked the dimple-wrong on the left side.
Both wheels on both wheels drive.
Adjusted the cable and it engages/disengages as it shouould.
Now I need the to weld the left front spindle on the backing plate.
Why is a new left spindle so much more than the right?
Jacks small engine
$8 for the right and $38 for the left?
 

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Glad to hear the drive issue got taken care of. For parts, lots of places to look. Ebay has always been a good source. These places offer some pretty darn good prices, but you do have to figure in shipping.

Honda Lawnmower Parts
Plano Power Equipment Online Store - Honda Lawn Mower Key

You may want to check with a local dealer. He knows the product, and through years of service, just might have stock piled a lot of usable replacement parts from used mowers that could be had for a good price.
 

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Pull the drive gear, remove spring and key and clean it all up. I have seen these get caked with dirt and not work properly.

Edit: Oops, it didn't show a page 2 when I replied, glad you got the issue solved and learned a little in the process.
 

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Discussion Starter · #19 ·
Thanks for all the help.
found out now the actual body is cracked by the left front wheel. Made plate to reinforce it up hope this helps the wobble.
 

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Bummer...sorry to hear about that. Maybe a good welding project for the winter mower break?......Body as in deck?:dunno:
 
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