Hayter Heritage Tractor 13/30 CODE131C WITH Briggs and Stratton 12.5 HP I/C engine

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pooleyr

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Hayter Heritage Tractor 13/30 CODE131C WITH Briggs and Stratton 12.5 HP I/C engine

Hello forum.

Back again.

I'm trying to get this machine up and running for an elderly neighbour
who is currently pushing a lawn mower around his large gardens.

He had this machine given to him for nothing.

It has been standing idle outside under a tarp for decades.

Story so far.

This machine was dead. No crank.

New starter solenoid (old one cracked at the battery terminal).
New starter fuse holder and 15A fuse. (old one had a broken terminal connector)
New seat switch. (old one had broken spring)
New bin switch. (might as well)
New ignition switch. (no continuity through old one)

Engine would now crank but no start.

Checked for spark. No spark.

Replaced plug. No spark.

Checked ignition coil resistance. Should be 2.5 to 5 kOhms

Reads 43 kOhms. Knackered

New ignition coil.

At this point engine now starts and runs but rough.

New air filter and fuel filter.

And here's what it sounds like today. (See link below)

I don't think it's a carb issue.

Maybe timing?

All and any thoughts would be appreciated.

Thanks in advance.

 
Sound like an off load lean burn issue. Probably has a Nikki carburetor with an idle mixture restricter jet.
 
StarTech said:
Sound like an off load lean burn issue. Probably has a Nikki carburetor with an idle mixture restricter jet.
Click to expand...
Thanks for the response.
I know what you mean but there don't appear to be any air leaks.
I smoke tested it.
Would stale fuel cause that kind of hunting?
I have no idea how old it is.
 
If it is what I thinking it doesn't have to have air leak. I done had to modify one Nikki and two Nikki clones this Spring. I have gotten it down what size micro drill bit I need. First time a rich, Second time a little lean yet, so I went in the middle and it was right.

It also just be the carburetor just needs a good cleaning.
 
StarTech said:
If it is what I thinking it doesn't have to have air leak. I done had to modify one Nikki and two Nikki clones this Spring. I have gotten it down what size micro drill bit I need. First time a rich, Second time a little lean yet, so I went in the middle and it was right.

It also just be the carburetor just needs a good cleaning.
Click to expand...
Thanks.
That's going to be last resort stuff.
Although I think I will go for a new one if it comes to that.
 
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