Hi Andrew, and welcome to TGMF. 

Strange one this, you seem to have replaced most of the parts so all should be good.  The gearbox on these don't slip as already mentioned, they are either in or out of drive, so this has to be a different issue.

I'm not sure if this is possible or even if it would make a difference (I've not done this), but wondering if perhaps the belt tension double pulley has been fitted upside down which could possibly change the speed ratio. As you mentioned it has new belts this might be worth checking. 

Hi

Please hear me out, I have a 2018 weibang 56, great machine, I love it...it should trundle along

I have a great engineer that does my work, and he's replaced tbe following and tbe drive works, but there no grest speed, it still feels like slow - med, in terms of gear settings in high gear..

We have replaced the following! Loads

Rear roller system
1 x roller
Roller rod
Bearings
Bushes
Dog gear in the middle
Small sprocket
Large sprocket
Drive shaft
Bushes
Chain tensioner
Chain
New blade!!!


Along from gear box left and right bearings (3) and thing they fix into.!

So lots of items as the rear roller system was pretty much mullered

Like I say it all works in terms of moves, but the speed is still vvv slow

Ps its had new belts as well

I'm absolutely puzzled and I love this machine, I do lot of large bits and ive like a lot of
Zzzzroom like when it was new! After all the new bits it's had

Any advice, I called weibang itself and I explained all the bits that had been replaced and said it has no non variables, the gear box works or it doesn't and as long as it's got new belts, chain,  drive cable

Could it be the gear selector cable?

Puzzled is an understatement.

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The current trend on YouTube for cleaning small engine carburettors seems to show the use of Micro Drill bits to clean the jets, or open them up slightly when engine is surging. I also see Gas nozzle files being sold for the same purpose, and they can be just as bad. 

I hate this advice and wish it would stop to be honest. It's fine if you really know what you're doing and don't take any metal out of the jets, but I find some after they are now cleaned properly are running too rich. This can get costly as some jets you can't buy separately which means a new carb is the only way to go. 

Cleaning with the aid of a Sonic Cleaning tank, a can of carb cleaner and (or) non abrasive cleaning pins of the correct size should be all you need to get it running properly.

For those with very little knowledge:  Sticking a drill bit through your jets is a bad idea, and could cost you more in the long run. 

Thanks, like I said I'm sure it will be handy info for those having the same issue as you mentioned.

I think I might have enough donor batteries to try and make a good one out of, but need to get or make up a spot welder to strap them together again.  Don't think my soldering iron will do it as the tip is too small.

Kev, glad to hear all is ok.    You'll be fine tipping it the other way though as I would do when servicing machines with the same engine.

Happy mowing. 

Just an update, I started it and it kicked out some white smoke as you said but sorted itself out after a few seconds. I've used the machine twice since and it runs perfect, so all the worry over nothing lol. But I won't be tipping it on that side again, I agree the manual is probably printed wrong or something. Thanks again 👍

Great, hope he can get it sorted for you.. And yes please let us know what he finds. 

Quote from: Steven1210 on April 25, 2024, 06:11:10 AMHi Mick

Funny you say that, as was looking at this

Weibang Virtue 50 SVP Variable Speed Pro Lawnmower 4 in 1

All my tree kit is husqvarna, as well as kombi system (strimmer, brushcutter, hedge cutter, pole pruner) but I'm just not taken by any of their models.

Was also looking at izy honda, but they look like a honda machine targeted at homeowners.

Steve

Steve, the Honda IZY 16" and 18" machines are pretty good to be honest, we have several people who use them commercially and love them.  The IZY 21" is a different machine altogether though, I always found the deck flimsy, and the separate height adjusters are rubbish.

Hi mick,  I've tried that, still the same. A lad I know is going to look it over. Hopefully get it going.
Thanks again and will let you know