Who's got one of the new hayter Harrier 48 Model 475A, 48 Pro 479A, Or 56: 575A, 56 Pro 579A? Just wondering what you think of them compared to the older models.  These are the ones with the BBC blade clutch.

Think the contractor will love them as they are so bloody fast compared to the older models.  In fact if I didn't know better I'd say they have made them a tad too fast for most users. That said they do already supply a kit to sow them down, but I haven't seen or fitted one yet.

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Hi I have a big issue with the company who import who are telling me that I have been running it over hard surfaces on the lowest height setting which will damage the chain casing , and is not a design fault
1 I have never used the lowest setting
2 how do you get a mower out the van onto the lawn without hard surfaces. Magic.
It all sounds so crazy I think they just won’t admit it’s a Lemmon.

I feel your frustration.

For them to tell you it's caused by running on hard surfaces on the lowest setting is complete bull. The chain cover shouldn't be anywhere near the surface.  If it is / was then that would be a design fault anyway.  I can understand this could be a problem if running along the edge of a concrete path etc, but not on a flat surface.

Quite a few cordless mowers being sold this year, they seem to be catching on. 

My favourite is still the EGO range though.  Like the idea of having separate motors for the drive and blade, and all controlled by simple switches.

Read so many posts about engine porting, and I realise when this is done properly you will gain extra power / speed from your chainsaw.

Then you read about the guys who opened up their muffler / exhaust on their brand new chainsaw and it runs so much better.  This begs me to ask the question.  Taking into account that a blocked muffler will defo have a negative affect.

Does opening up the exhaust really give you extra power?  How much of this is placebo effect on the user, I mean the extra noise possibly making it sound more powerful, and actually not having any affect on the performance at all, apart from making it possibly worse.

In my opinion the stock muffler should be optimised from the factory for max performance and longevity of the saw, not to mention noise levels, and emissions = (CAT versions).

What's your take on all this?

Hi, and welcome to TGMF. 

Not 100% familiar with that model, but I think you should have three pipes coming from the tank,

One is fuel supply to carb, that the long one that goes from the carb, and all the way inside the tank and has a fuel filter on the end.

Another short one that has the tank breather on the end outside of the tank, the other end pokes just inside the tank.

And another short pipe which goes from the carb to just inside the tank like the breather one, and returns fuel to the tank when you prime the carb via the primer button.

In short,
1: Fuel feed pipe.
2:Breather pipe.
3: Return pipe.

If you have any pictures of the carb etc, you can attach them to a reply here, that would be helpful.

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EGO Power + 14" Cordless Chain saw Bundle £239.00 https://www.lawnmowers-uk.co.uk/ego-power-14-quot-cordless-chain-saw-bundle