Stiga mower engine problem

[melted welly]

Hi,

got a petrol engined stiga park compact mower. Has briggs and Stratton petrol engine.

when started, the engine will conk out under any form of load - moving fwd or back, or engaging bed. It will start again straight away, will Rev to full rev, but does cough and splutters.

once it’s been running a while it is better, but not right, eventually the problem goes away once it’s been going 10 - 15 mins.

I’ve done the filters, flushed the tank and lines, but beyond that my knowledge of small petrol engines is non existent.

anyone have any pointers?

and I’m not cutting the grass today in the piddling rain, it’s just taken me until now to get to it.

 

[Timbo]

More than likely some gum slightly obstructing the main jet from stale fuel and it's running lean.

 

[Forkdriver]

Did B and S engines ever run well? Sorry not to be helpful, but your experience matches mine.

 

[Timbo]

Did B and S engines ever run well? Sorry not to be helpful, but your experience matches mine.

Briggs & Scrap-em for a reason!

 

[5020man]

Give it a bit of choke for the first minute,
to allow it to warm up.

 

[Tony1989]

Is it single cylinder or v twin?

 

[Dave W]

If it's a twin pull each spark plug cap off in turn.
I've had a few twins with similar symptoms. Ticked over and revved fine but cut out under load. Turned out they were only running on one cylinder yet sounded sweet until they were under load

 

[Adeptandy]

If it's a twin pull each spark plug cap off in turn.
I've had a few twins with similar symptoms. Ticked over and revved fine but cut out under load. Turned out they were only running on one cylinder yet sounded sweet until they were under load

Mine was the same, was only on 1 cylinder, con rod had snapped, couldn't even tell it was on 1 until we stripped it

 

[rob h]

Mine was the same, was only on 1 cylinder, con rod had snapped, couldn't even tell it was on 1 until we stripped it

Ours let us know by throwing the piston out the side.still ran but a bit rough.foung a second hand engine of a scrap mower and been good so far

 

[Hillside]

Ours developed that fault in yhe summer but rectified by cleaning spark plugs.

 

[melted welly]

More than likely some gum slightly obstructing the main jet from stale fuel and it's running lean.

Thanks, will check that next

 

[melted welly]

Is it single cylinder or v twin?

Single cylinder I think

 

[melted welly]

If it's a twin pull each spark plug cap off in turn.
I've had a few twins with similar symptoms. Ticked over and revved fine but cut out under load. Turned out they were only running on one cylinder yet sounded sweet until they were under load

Think I’d better take another look for a 2nd spark plug!

 

[Chae1]

Think I’d better take another look for a 2nd spark plug!

Ours just has 1. I've just spent hours trying to get my ignition coil sorted out. Finally stopped blowing the ignition coils. Engine running fine. Engaged blades nothing. Looked underneath and the beds rotted out!

 

[PSQ]

My Stiga is playing up, reluctant to crank past compression with a fully charged battery, won’t fire with jump leads. Apparently the B&S are a bit sensitive to large valve gaps. Reset them (c/o YouTube). New fuel filter, battery and plug on Monday.

 

[Kidds]

Are these Stiga any good then?
Looking to buy a new mower now I've made the lawn bigger and choosing between a Stiga and a Mountfield, just a different colour really as they are both the same thing.

 

[Bury the Trash]

yeah got 2 walk behinds, they stick a fairly hard go on our mowing round.
mind you no seat as them ones make fer a lard ass
infatct could be rideons are for them with too much money or lazy or maybe both.....

and if your lawm=ns that big best put some ruminants on it and be more carbon neg. or ios it pos ? whatever......

 

[Timbo]

Are these Stiga any good then?
Looking to buy a new mower now I've made the lawn bigger and choosing between a Stiga and a Mountfield, just a different colour really as they are both the same thing.

They cut grass. Very domestic built to a low price quality.

 

[melted welly]

Are these Stiga any good then?
Looking to buy a new mower now I've made the lawn bigger and choosing between a Stiga and a Mountfield, just a different colour really as they are both the same thing.

Mines been fine, until now, its 12 yr old.

Doesn’t like the wife though

 

[melted welly]

My Stiga is playing up, reluctant to crank past compression with a fully charged battery, won’t fire with jump leads. Apparently the B&S are a bit sensitive to large valve gaps. Reset them (c/o YouTube). New fuel filter, battery and plug on Monday.

Yeah, mine wouldn’t fire today either, just wound and wound. Was reminded it broke down on its last lady driver outing.