Honda HR1950

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occamoo

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Honda HR1950
« on: April 25, 2010, 20:26 »
Hi,

I'm have a problem with my Honda lawnmower, the power drive doesn't seem to engage very well, it judders a bit and only really properly starts when I give the mower a bit of a push.

Does anyone have any experience of the drive on these that can give me any pointers?

Also, does anyone know where I can download repair manuals or exploded diagrams for Honda mowers?

Many thanks in advance.

Paul

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adal

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Re: Honda HR1950
« Reply #1 on: April 25, 2010, 21:11 »
have a look on this site http://www.jackssmallengines.com/belt_problems.cfm i hope you find it here.

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Ice

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Re: Honda HR1950
« Reply #2 on: April 25, 2010, 21:40 »
Have patience occamoo, our resident experts will be along to sort this out.  It's a specialist subject so it might take a little longer.
Cheese makes everything better.

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Gwiz

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Re: Honda HR1950
« Reply #3 on: April 26, 2010, 06:27 »
There are three usual problems with that drive system. Two are reasonably cheap to fix, one isn't.
"stop using it!" you could be making a cheap repair more expensive.
The first thing to look at is the cable, have you damaged it by folding over the handles to get the machine in the shed, or the boot of the car? you may find that you have to replace the cable, or it may simply need adjusting which is done up near the top, under the handles.
The second common problem is the the metal arm on top of the gearbox that the cable pulls when you engage the drive. This is held on by a a bolt that clamps it tightly to a splined shaft that comes from within the gearbox itself. These metal arms very often break/snap at the point that they are clamped on. Sometimes the break isn't too obvious, so you will need to check it carefully.
Finally, the expensive bit.
With all Honda rear roller mowers, you should start to push the machine before engaging the drive. There isn't any "give" at all with this type of drive system, so engaging the drive without all the gears moving, will eventually wear out the gears in the gearbox. It is EASIER to replace the whole gearbox, but you don't HAVE to, you can just buy the gears that have worn out inside the box, but you do have to be a reasonably competent DIY mechanic to do so, and you will need more tools than an an adjustable spanner and a hammer.
sing out if you need any more help. :)
Oh yes, the diagram, I don't have one to hand, but a Honda dealer may well print it off for you if you ask nicely. You will need to go to one after all to get the bits to fix it! ;)
« Last Edit: April 26, 2010, 06:56 by Gwiz »

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occamoo

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Re: Honda HR1950
« Reply #4 on: April 26, 2010, 07:19 »
Thanks very much.

Unfortunately I'm fairly sure it isn't either of the first two as I have replaced the cable not so long ago and I have had a look at the little lever on the side of the case, my only observation was that it was incredibly stiff, I wondered if that was why the old cable had broken.

So, does that mean its not a clutch in there, its just gears engaging directly?

Thanks again for your help.

Paul

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Gwiz

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Re: Honda HR1950
« Reply #5 on: April 26, 2010, 07:56 »
It is, basically, a sliding dog clutch. No "give" what-so-ever, on or off, that's your lot, that's why it needs to be turning to prevent the sudden shock of being engaged from a standing start.
You won't need to replace all the internals, but if I remember correctly, get the splined roller shaft, it's needle roller bearings (you WON'T be able top get the old ones out and re-use them!) and the dog clutch halves. I think that's it, but it does all depend on how much damage yours has sustained. I often find replacing the oil seals is worthwhile, seeing as it's in bits anyway........ :)

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occamoo

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Re: Honda HR1950
« Reply #6 on: April 26, 2010, 20:48 »
Thanks very much for the advice.

My dad came and helped me to take it all to bits tonight, interesting to see whats inside, but it all looked ok.

We were a bit surprised at the simplicity of the mechanism and what a small movement the arm has to engage/disengage.

We put it all back together and adjusted the cable and it seems ok,  I think your comment about needing to be moving when it engages is spot on, its just the way the mechanism works, otherwise theres a couple of clicks whilst the dogs engage.

To be honest, I've been a bit dissapointed with the Honda mower quality, I always thought they would be better then this.

Anyway, its all back together and although still a bit of a judder, its hardly anything if its moving before engaging.

I think Dad is going to upload a few photo's so would be interested if you spot anything from them, otherwise case closed!

Thanks again.

Paul

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Mr Mole

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Re: Honda HR1950
« Reply #7 on: April 26, 2010, 21:32 »
Hopefully a few pictures for “Gwiz” to cast his expert eye over.









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Gwiz

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Re: Honda HR1950
« Reply #8 on: April 27, 2010, 05:29 »
yep, I can see wear and tear on the clutch, which won't help, there is also some wear on the fork ends (well, it looks like there is in 2D :))
If you're happy with it as it is, then there's a result. Cheer yourself up by phoning a dealer and getting a price for a new gearbox...... ;)

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occamoo

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Re: Honda HR1950
« Reply #9 on: April 27, 2010, 16:46 »
Thankyou for the pictures Mr Mole (!?!)   :tongue2:

Gwiz, many thanks for your help.  I'd really like to try a Honda mower in full working order to compare, but I can't see it being much better than this as the dogs must always cause a little jerk or judder and need that push to get it moving away relatively smoothly.

Thanks again..

Paul

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Gwiz

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Re: Honda HR1950
« Reply #10 on: April 27, 2010, 16:57 »
Even from brand new there is quite a sharp uptake to the drive.
I'm very sure that the manual says you should start to push the machine as you engage the drive, which would make a lot of sense as it's just a dog clutch. If yours is more or less working, leave it be, or spend about £100 fixing it to what it was like new.
I'll stick to the £99 el cheapo Champion that I heaved out of the skip and serviced. :blush:
The drive on that one is even more simple. It hasn't got one, apart from me. ;)

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Mr Mole

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Re: Honda HR1950
« Reply #11 on: April 27, 2010, 20:39 »
Gwiz, it’s a lot better than more or less working........”Granted” from a standing start it gives a couple of clicks before the dogs settle (maybe not a bad thing as an instant bite must be a pretty rude awaking for the drive train) but if you just start the mower rolling as you engage the drive it drops in as sweet as a nut.  I would think the wear on the clutch is pretty much par for the course on a machine that has done three or four seasons mowing.

“Occamoo”, for your cheek sticking your tongue out (re- me posting pics).

With Gwiz explaining it is only a rather crude dog clutch.........If I had tried the mower first I would most likely have suggested adjusting the cable and leaving it at that.... but I do like to see how things work on the inside........especially at someone else’s ( your) expense if we had busted  something.  :tongue2: :tongue2: :lol: :lol: :lol: :lol:

Thank's for your time Gwiz.



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Gwiz

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Re: Honda HR1950
« Reply #12 on: April 28, 2010, 05:22 »
It's been a pleasure. :)



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