briggs 675 engine problem

MFdaveIreland

Have a b&s 675 auto choke engine on hayter . It is revving high for some reason or other and not running smoothly any suggestions
Not impressed with this heap of junk at all

MFdaveIreland

any one ???

CJhaughey

MFdaveIreland wrote: »

Have a b&s 675 auto choke engine on hayter . It is revving high for some reason or other and not running smoothly any suggestions
Not impressed with this heap of junk at all

I am not impressed with B+S either.
Sounds like the throttle assembly is bad, there is a carb repair kit available for them.
The diaphragms in them can give up with ethanol fuel.
Also check that the flywheel is not spinning on the shaft, these can shear the key on occasion.

MFdaveIreland

CJhaughey wrote: »

I am not impressed with B+S either.
Sounds like the throttle assembly is bad, there is a carb repair kit available for them.
The diaphragms in them can give up with ethanol fuel.
Also check that the flywheel is not spinning on the shaft, these can shear the key on occasion.

Speaking to a chap today suggests to check governor spring on throttle. B and s are scrap compared to my honda. Im hoping it will be better once this is fixed

arthur daly

Not been smart but without actually seeing it it would be near impossible to diagnose the problem.
Could be anything from a cracked pipe,sticking parts need oiling,dirt in system,loose/worn springs cables parts etc.
Check fuel system for cracks(might not necessarily be leaking
Chech all throttle components
Clean carb

Rob Thomas

MFdaveIreland wrote: »

Speaking to a chap today suggests to check governor spring on throttle. B and s are scrap compared to my honda. Im hoping it will be better once this is fixed

B&S are in 90% of pushmowers on the market and they are generally reliable in fairness. Given the sheer number of them available, there are bound to be a few lemons. Hopefully the fixes advised will sort yours out.

Honda are bulletproof now and were in the past too; but there was a period a few years ago where they were using cheaper components or outsourcing and the quality really suffered before they get their act back together.

I always understood the general consensus was that B&S were the standard for a solid reliable mower and if you wanted the best, pay the extra for the genuine Honda. Its accepted that B&S are not at that level, but there is a premium involved.

Gen.Zhukov

CJhaughey wrote: »

I am not impressed with B+S either.
Sounds like the throttle assembly is bad, there is a carb repair kit available for them.
The diaphragms in them can give up with ethanol fuel.
Also check that the flywheel is not spinning on the shaft, these can shear the key on occasion.

That's ^ where I'd start. Did it last year after mower started running rough for no obvious reason. Not too hard a job and if unsure there are some step by step YT videos on it.

arthur daly

Not been smart but without actually seeing it it would be near impossible to diagnose the problem.
Could be anything from a cracked pipe,sticking parts need oiling,dirt in system,loose/worn springs cables parts etc.
Check fuel system for cracks(might not necessarily be leaking
Chech all throttle components
Clean carb

CJhaughey

The best engine I have seen on a Mower is the Kawasaki FJ180v
Fantastic engine, full pressure lubrication system, not a splash like the GX series Honda.