Reply With QuoteIf it has the fuel tank under the carby, strip it down, there's a simple rubber diaphragm in there that acts as a fuel pump. They shrink with age and cause all sorts of running problems. They're quite cheap to replace from memory.
Wizard
I have four stroke B&S lawnmower (Sprint 375 which is about 9 years old)which has become a pain to start.
It use to start on the third pull unless the air cleaner was dirty.
The only way it will start now is if I take the air cleaner off, and once running put it back on and it runs fine. I have changed the air cleaner to a new one but this has not helped.
I suspect that the rings are going bad as it has started to use oil, and the inside of the carb entrance is oily. If I take the the crank case vent off of the carb it does run better, and after running for awhile oil spills out of it (it needs a provent!)
I have sprayed carb cleaner down it a couple of times, and the spark plug is reletively new and is in decent shape.
I am open to suggestions.
AT REST
If it has the fuel tank under the carby, strip it down, there's a simple rubber diaphragm in there that acts as a fuel pump. They shrink with age and cause all sorts of running problems. They're quite cheap to replace from memory.
YarnMaster
SubscriberWhat he said !!
About $10-12 and a piece of cake to change .... Clean fuel tank as well whil it's apart.
Kev..
Going ... going ... almost gone ... GONE !! ... 2004 D2a Td5 Auto "Classic Country" Vienna Green
2014 MUX LST with fruit
2015 Kimberley Kamper "Classic"
Wizard
Went to the mower shop and got B&S part no 5083.
Includes gasket, diaphragm, diaphragm spring and filter all for $12.00 plus some free advice on fitting.
When I took the carb off I was very surprised at the amount of "mud" at the bottom of the filter. Filter was clean though.
Have yet to fit the new kit - will let you know if it fixed the problem or not.
Check the valve clearances too.
A mate who does small motors for a living, reckons it's the main problem he finds with the Briggs.
Master
My B&S lawn mower will never start if the fuel is stale - even one month old. So now I always run it dry & put fresh fuel in every time it is needed, and then it starts first pull.
RoverLord
My experience, with multiple motors over many years is
B&S = hard start
John
John
JDNSW
1986 110 County 3.9 diesel
1970 2a 109 2.25 petrol
Wizard
Put the new kit in, and started right away. Now the darn thing will not come up to proper running revs.
When it first starts it will reach proper running revs for about 5 - 10 seconds then it will slow down and run rough. Have checked all the linkages and are set properly.
Even took everything apart and double checked things were installed properly.
Master
SubscriberIs the choke coming off?
In my case I have a mower that was running well, but then stopped. Would not restart. New plug, new fuel, new carby cover, seal, new needle valve.
Wizard
Have you tried adjusting the fuel mixture screw?Originally Posted by crash
Aaron
Posting Permissions
| Search AULRO.com ONLY! |
Search All the Web! |
|---|
|
|
|
Bookmarks