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spudulike

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aren't ther the 2 pacmans internal and ewxternbal shapes going from the diagram ?

Possible, but I do not think so. Both are for Mitox carbs which are in fact genuine Walbro.

 

One of the Pacmans is for hedgetrimmers, whilst the other is for brushcutters. The D shape is for walbros as well.

 

And, for Spuds benefit, all 3 of these are around a fiver each.

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This piston is from a Tanaka brushcutter which came in last week.

 

One pull on the cord revealed it had siezed, so the first thing was to check the petrol.

 

"this is neat petrol sir, there's your cause" says I.

"its a four stroke" says the customer, "I have only ever used straight petrol in it since I bought it 18 months ago"

"sorry, sir. It does need oil or it will sieze, as indeed it has"

 

He is an intelligent guy, clear and concise, no memory isues. I have no reason to doubt his word that he has only used neat petrol.

 

So, how the hell did it last 18months???? I would have expected 10 minutes tops.

 

What a testament to the incredible quality of Tanaka.

P1010085.jpg.fbacf78cf92e3a8ba6905a2f36978b0e.jpg

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This piston is from a Tanaka brushcutter which came in last week.

 

One pull on the cord revealed it had siezed, so the first thing was to check the petrol.

 

"this is neat petrol sir, there's your cause" says I.

"its a four stroke" says the customer, "I have only ever used straight petrol in it since I bought it 18 months ago"

"sorry, sir. It does need oil or it will sieze, as indeed it has"

 

He is an intelligent guy, clear and concise, no memory isues. I have no reason to doubt his word that he has only used neat petrol.

 

So, how the hell did it last 18months???? I would have expected 10 minutes tops.

 

What a testament to the incredible quality of Tanaka.

[ATTACH]153869[/ATTACH]

 

That looks pretty nasty - it is possible that he only used it in very short stints and never got to the temperature to melt aluminium.

 

My brother had a similar instance - purchased a Honda four stroke and wasn't told by the dealer to use any oil in the petrol but fortunately read the instruction manual - not the usual blokeish thing to do:001_rolleyes::lol:

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That looks pretty nasty - it is possible that he only used it in very short stints and never got to the temperature to melt aluminium.

 

My brother had a similar instance - purchased a Honda four stroke and wasn't told by the dealer to use any oil in the petrol but fortunately read the instruction manual - not the usual blokeish thing to do:001_rolleyes::lol:

thats what I thought, but he said he had been using it for an hour on the day it siezed!

 

Of course, when I sold it originally it was filled with Aspen. This must have protected it long after it was used up. Marvellous stuff!

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