Single-stroke petrol jackhammer - faulty carburetor?

[thelawnet1]

Edit: I mean single cylinder, two-stroke, obviously.

I have a cheap Chinese jackhammer, it starts up and after two or three minutes at the most, it stops totally. Someone said it was the carburetor, but I haven't got the machine in hand (it is in Indonesia, I am in the UK), but does that make sense?

They were saying they couldn't find the replacement carburetor, spec is H119-6A-00-210 (don't know if all those numbers are significant). Would it be likely that the carb is indeeed knackered? As I understand they have tried to take it to a village repair man (has tools but almost no parts) and it doesn't work for more than a few hours before breaking down again.

Is it likely possible to repair or clean? Or do these things wear out fairly quickly? And can you find a different carb based on spec or is it limited to the same part number>

Edited by thelawnet1 on Tuesday 31st January 15:07

[V8RX7]

Wrong section really.

Generally if carbs don't work it won't start or run properly.

I'd suggest if it starts and runs fine then it's not the carb (although could be carb icing in cold weather)

Generally things running for a few mins and stopping are due to coils failing IME.

When it stops is there still a spark at the plug ?

[thelawnet1]

I will ask them to check. Weather doesn't go below 20 Celsius ever, so not likely to be ice

This is the manual

http://www.jinlantrade.com/ebay/95ajackhammer/95a....

Are ignition coils something that are fairly standard and replacaeble with a part from a local Honda/Yamaha moped? Or is it going to be a specific Chinese part as well?

[Jambo85]

Ignition problem of some sort I would say. A new spark plug would be cheap to try, but surely the local man has tried that?

[chockymonster]

When it dies have you tried opening the petrol tank and seeing if there's an airlock?

[thelawnet1]

They seem sure it's the carb.

Something about they were fiddling about with it to try and repair it, and first the head and then the whole carb got ruined.

However apparently it's never been taken to a proper repair place they just brought the carb. It's going to one today though.

[thelawnet1]

well they changed the carb and it was fine but now the starting cord is shagged. cheap chinese equipment not durable, who'd have thought it?

[thelawnet1]

so apparently the starter mechanism is knackered. Knackered spring.













Any suggestions for repairing or replacing? Is that a commodity part, or?

[EireEng]

Normally you'd replace the whole cover/spring/pull cord as one subassembly.

Assuming it's a knock off big-brand design, the big-brand replacement part may fit it.

[thelawnet1]

it seems a common Chinese design.

http://atctools.en.made-in-china.com/product/AqrnF...

But no idea if it's copied off someone else's.

you can get starter assemblies (not sure if they would work) but the cost is pretty much the same as an entire new Chinese jackhammer! http://www.ebay.co.uk/itm/Genuine-Starter-Complete...

or just get a third party generic assembly from a lawnmower??? http://www.ebay.co.uk/itm/RECOIL-PULL-START-STARTE... or generator? there are definitely plenty of cheap petrol generators there.

Edited by thelawnet1 on Sunday 12th March 18:34