Help...

I have a Champion mower with a Briggs & Stratton 35 Classic motor(approx
4 year old) that's never given me any real problems. I have serviced it
myself and all worked fine until today. The engine has a red prime bulb
which when U push squirts petrol into the carb (I think) when I tried to
prime it today there's nothing happening, no feel of liquid moving etc.
just an air noise. I Have taken off the air filter and sure enough no
squirt of petrol can be seen. Checked the obvious and the tank is full
any ideas where I go next ?

Thanks in hope with a very long lawn and only a one day dry spell forecast.

JD wrote:
Help...

I have a Champion mower with a Briggs & Stratton 35 Classic
motor(approx 4 year old) that's never given me any real problems. I
have serviced it myself and all worked fine until today. The engine
has a red prime bulb which when U push squirts petrol into the carb
(I think) when I tried to prime it today there's nothing happening,
no feel of liquid moving etc. just an air noise. I Have taken off the
air filter and sure enough no squirt of petrol can be seen. Checked
the obvious and the tank is full
any ideas where I go next ?

Thanks in hope with a very long lawn and only a one day dry spell
forecast.

With filter off,pour a little bit of petrol into the carb cylinder and try
starting it like that to see if its air in the feed pipe?

ps if it works leave it alone till a problem does arrive.. Thats my motto.
;-)

--
Sir Benjamin Middlethwaite

The3rd Earl Of Derby wrote:
JD wrote:

Help...

I have a Champion mower with a Briggs & Stratton 35 Classic
motor(approx 4 year old) that's never given me any real problems. I
have serviced it myself and all worked fine until today. The engine
has a red prime bulb which when U push squirts petrol into the carb
(I think) when I tried to prime it today there's nothing happening,
no feel of liquid moving etc. just an air noise. I Have taken off the
air filter and sure enough no squirt of petrol can be seen. Checked
the obvious and the tank is full
any ideas where I go next ?

Thanks in hope with a very long lawn and only a one day dry spell
forecast.


With filter off,pour a little bit of petrol into the carb cylinder and try
starting it like that to see if its air in the feed pipe?


If it's two-stroke the oil and petrol may have separated over Winter and
bunged up the pipework (hint from the local pub)

john2

"JD" wrote in message
...
Help...

I have a Champion mower with a Briggs & Stratton 35 Classic motor(approx 4
year old) that's never given me any real problems. I have serviced it
myself and all worked fine until today. The engine has a red prime bulb
which when U push squirts petrol into the carb (I think) when I tried to
prime it today there's nothing happening, no feel of liquid moving etc.
just an air noise. I Have taken off the air filter and sure enough no
squirt of petrol can be seen. Checked the obvious and the tank is full any
ideas where I go next ?

Thanks in hope with a very long lawn and only a one day dry spell
forecast.

If there's petrol appearing at the carb and it ain't starting remove the
plug and check it's clean and regap to 20 thou.

Also check the kill engine device (Switch or contacts on carb) and see if
there's a short.

If you are getting a spark *and* fuel then maybe the main jet is a little
gummed or you've got water in the float bowl

Me here wrote:


If there's petrol appearing at the carb and it ain't starting remove
the plug and check it's clean and regap to 20 thou.

Want to read the post again. :-)

--
Sir Benjamin Middlethwaite

The3rd Earl Of Derby wrote:

With filter off,pour a little bit of petrol into the carb cylinder and try
starting it like that to see if its air in the feed pipe?

I used to make a goodly profit the start of every mower season by
doing the very same thing.

Lots of little rubber bits that get stuck shut when they should be
working as valves and stuff.

If it was a "start of the season" thing then yep, but if it is a mid
season already been used on several occasions then I'd guess it's
something else, but worth a try in the first instance.

Another thing that was very common with rotary mowers was if the blade
hit an immoveable object (stump/stone etc)which often caused the small
"key" that holds the flywheel in correct position on shaft to become
partially "sheared" which threw the timing out by a few degrees.

Home made flywheel puller would be required in such instances.

Pete
http://www.gymratz.co.uk
Gym & Fitness Equipment at it's best

"The3rd Earl Of Derby" wrote in message
. uk...
Me here wrote:


If there's petrol appearing at the carb and it ain't starting remove
the plug and check it's clean and regap to 20 thou.

Want to read the post again. :-)

Don't need to.
I was suggesting what *should* happen ideally.
I can see there is a problem in the fuel line by the description.
Possibly the diaphragm or valve is damaged or allowing air past in the
primer.

The3rd Earl Of Derby wrote:
JD wrote:
Help...

I have a Champion mower with a Briggs & Stratton 35 Classic
motor(approx 4 year old) that's never given me any real
problems. I have serviced it myself and all worked fine until
today. The engine has a red prime bulb which when U push squirts
petrol into the carb (I think) when I tried to prime it today
there's nothing happening, no feel of liquid moving etc. just an
air noise. I Have taken off the air filter and sure enough no
squirt of petrol can be seen. Checked the obvious and the tank
is full
any ideas where I go next ?

Thanks in hope with a very long lawn and only a one day dry spell
forecast.

With filter off,pour a little bit of petrol into the carb
cylinder and try starting it like that to see if its air in the
feed pipe?

A squirt of Bradex EasyStart is my answer every Spring.
Wonderful stuff, I wonder if they still sell it?