Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

Thanks

Steven.

On Fri, 12 Jun 2009 11:53:29 +0100, Steven Campbell wrote:

Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

I think so. That's exactly what my Ryobi brushcutter does.
--
Regards,

Hugh Jampton

Steven Campbell wrote:

Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the
cutting head would spin all be it slowly If I pull the trigger and
the revs go up considerably, the head will spin but as soon as I
introduce it to the heavy overgrowth it stops spinning. Its not until
I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem Is this correct?

Yes, & the instructions probably say as much.


--
Krusty

"Krusty" wrote in message
...
Steven Campbell wrote:

Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the
cutting head would spin all be it slowly If I pull the trigger and
the revs go up considerably, the head will spin but as soon as I
introduce it to the heavy overgrowth it stops spinning. Its not until
I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem Is this correct?

Yes, & the instructions probably say as much.

First place I looked, nothing in there.

Steven Campbell wrote:


"Krusty" wrote in message
...
Steven Campbell wrote:

Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the
cutting head would spin all be it slowly If I pull the trigger and
the revs go up considerably, the head will spin but as soon as I
introduce it to the heavy overgrowth it stops spinning. Its not
until I have it revved up to the full amount (or at least it
seems that way) that it will spin and cut without problem Is this
correct?

Yes, & the instructions probably say as much.

First place I looked, nothing in there.

Just checked mine (Ryobi Expand-It) & it says in big bold letters near
the start of the 'Operating the Trimmer' section: 'Always operate
trimmer at full throttle'.

--
Krusty

Krusty wrote:
Steven Campbell wrote:

"Krusty" wrote in message
...
Steven Campbell wrote:

Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the
cutting head would spin all be it slowly If I pull the trigger and
the revs go up considerably, the head will spin but as soon as I
introduce it to the heavy overgrowth it stops spinning. Its not
until I have it revved up to the full amount (or at least it
seems that way) that it will spin and cut without problem Is this
correct?
Yes, & the instructions probably say as much.
First place I looked, nothing in there.

Just checked mine (Ryobi Expand-It) & it says in big bold letters near
the start of the 'Operating the Trimmer' section: 'Always operate
trimmer at full throttle'.

Oddly enough I just did some strimming, and basically its dosn't really
work at anything BUT full throttle. Buggers run out of nylon cord too.
fun time winding more more on tomorrow, not!

"The Natural Philosopher" wrote in message
...
Krusty wrote:
Steven Campbell wrote:

"Krusty" wrote in message
...
Steven Campbell wrote:

Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the
cutting head would spin all be it slowly If I pull the trigger and
the revs go up considerably, the head will spin but as soon as I
introduce it to the heavy overgrowth it stops spinning. Its not
until I have it revved up to the full amount (or at least it
seems that way) that it will spin and cut without problem Is this
correct?
Yes, & the instructions probably say as much.
First place I looked, nothing in there.

Just checked mine (Ryobi Expand-It) & it says in big bold letters near
the start of the 'Operating the Trimmer' section: 'Always operate
trimmer at full throttle'.

Oddly enough I just did some strimming, and basically its dosn't really
work at anything BUT full throttle. Buggers run out of nylon cord too. fun
time winding more more on tomorrow, not!

I have just bought a new Stihl FS130, which is more of a semi-professional
machine, with one of the new-fancgled-2-stroke-but-isn't motors on it.

Anyhow, rather peeved me to notice that Stihl now bundles the standard head
with totally pointless and eco-green-coloured, "low noise" & crap 1.0mm
line, that rattles around in the metal gromits... It is about as useless as
spaggetti for cutting with. Breaks when you show it some dense vegetation,
usually within the spool inside the head. Much cursing!

1.6mm square section line now installed and a different machine altogether,
a total animal.

Tim.

On Fri, 12 Jun 2009 11:53:29 +0100, Steven Campbell wrote:

I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly

My strimmer does.

If I pull the trigger and the revs go up considerably, the head will
spin but as soon as I introduce it to the heavy overgrowth it stops
spinning. Its not until I have it revved up to the full amount (or at
least it seems that way) that it will spin and cut without problem
Is this correct?

I use the throttle on mine more or less as switch either idle or flat out.
There is a centrifugal clutch in there. Is this a new or second hand
machine? Maybe that is a bit stiff, not bedded in if new, full of crud if
old...

--
Cheers
Dave.

Steven Campbell wrote:
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

Certainly its possible to stall the head..mine did that..until I
reassembled it to reduce the spaces into which nettle fibres were
drawn..someone should make rope out of nettles..its extremely tough.

But you can hear it labouring..

Its probably not good to have the clutch slipping though. Maybe you have
burned yours out already.


It should spin freely once the motor cuts back to idle I think. So if
you rev and then stop, the head should stay spinning a while.


Check for binding everywhere esp. if you have been at the nettles.


Thanks

Steven.

"The Natural Philosopher" wrote in message
...
Steven Campbell wrote:
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning.
Its not until I have it revved up to the full amount (or at least it
seems that way) that it will spin and cut without problem
Is this correct?

Certainly its possible to stall the head..mine did that..until I
reassembled it to reduce the spaces into which nettle fibres were
drawn..someone should make rope out of nettles..its extremely tough.

But you can hear it labouring..

Its probably not good to have the clutch slipping though. Maybe you have
burned yours out already.


It should spin freely once the motor cuts back to idle I think. So if you
rev and then stop, the head should stay spinning a while.


Check for binding everywhere esp. if you have been at the nettles.


Thanks all. Yes it was bought brand new.
The cutter cuts no problem when the throttle is near full on. I just wasn't
sure if the head should be spinning as soon as it fires up. Seems like its
working the way it should.

Thanks again

Steven.

"Steven Campbell" wrote:
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

Our McCulloch strimmer has a tendency when cutting longer grass to wrap
a load of vegetation around the spindle at the business end and jam
things up so it doesn't spin as easily. You need to take the spool off
to really clean things out if this happens.

Jim wrote:
"Steven Campbell" wrote:
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

Our McCulloch strimmer has a tendency when cutting longer grass to wrap
a load of vegetation around the spindle at the business end and jam
things up so it doesn't spin as easily. You need to take the spool off
to really clean things out if this happens.
I have had 2 differing makes of petrol brush cutters. Both, when new and
used a while do not spin at idle revs, I assume this is a safety device.
For cutting tougher material I have a disk that can be fitted in place
of the strim head, the machines behave exactly the same with those.

--
Please reply to group,emails to designated
address are never read.

On Fri, 12 Jun 2009 11:53:29 +0100, Steven Campbell wrote:
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

It's normal for them to not spin at idle, but I'm surprised you get
nothing at part-throttle; it almost sounds like the throttle's not working
properly (which might be down to other things - incorrect choke setting,
blocked intake, incorrect fuel/oil mix etc.)

cheers

Jules

Steven Campbell wrote:
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

There is a clutch - so at idle it should not spin.

The Ryobi seems to need a fair amount of throttle to get it cutting well
though.

--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/

Steven Campbell laid this down on his screen :
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting head
would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin but
as soon as I introduce it to the heavy overgrowth it stops spinning. Its not
until I have it revved up to the full amount (or at least it seems that way)
that it will spin and cut without problem
Is this correct?

They have a centrifugal clutch at the output shaft just beneath the
engine. It only starts to engage as you open the throttle, so a light
throttle opening will not fully engage it and it will stop under load.

You shouldn't use any throttle setting but full and tick over.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk

Steven Campbell wrote:
Bought a petrol Ryobi brushcutter yesterday.
I was under the impression that once the motor was fired up, the cutting
head would spin all be it slowly
If I pull the trigger and the revs go up considerably, the head will spin
but as soon as I introduce it to the heavy overgrowth it stops spinning. Its
not until I have it revved up to the full amount (or at least it seems that
way) that it will spin and cut without problem
Is this correct?

Thanks

Steven.





I have a Ryobi brushcutter.

Just to avoid missunderstanding; yours has a, basically square, cutting
disc with crescent moon shaped bites out of all four sides?

This is what mine has and nothing short of jamming it against a sapling
that is too thick to cut stops the full throttle rotation. At idle the
centrifugal clutch drags just enough for the disc to turn unless it is
resting against something.

It's very much an off or on operation and is a pain until the motor has
warmed fully.

HTH

Richard