time to adjust the carb?

[chrismechanic]

the saw has gone to malloys mowers for repairs, authorized by the guy i emailed at mccholluch uk

 

i hear you welshwoodman, stuff these days just dont last 5 mins.

the saw has had like less than 7 lts of fuel through it...

 

doobin, i still may end up doing that... we will see what happens.

 

cheers guys,

chris

[chrismechanic]

guys, the shop phoned me and said that i had been running the saw on the wrong % mix...

 

he showed me some fuel he said he drained out of the tank and it looked like raw fuel, he said it should be red, well the fuel i put in it was red.

 

then he showed me the bore and said it had 2 nicks out of it.

 

i said ok fine and took the saw home, now im home im looking at the bore and those nick's he is talking about look like bubbles in the casting to me.

the bore has no steel liner.

 

the piston has no damage to it like you would expect if it had grabbed some alloy from the bore.

 

as i dont use this saw very often i only mix up 500ml of fuel at a time, the manual says 1:50 ratio which is 10ml of oil to 500ml of petrol.

 

so now my saw is in bits... what shall i do guys...

 

here are pics of the bubble in the casting and the side of the piston which the bubble is...

 

 

 

 

the rest of the fuel from what was in the tank looked like this...

 

 

thanks again guys,

chris.

[Eddy_t]

The engine looks fine to me, as does the piston

[chrismechanic]

exactly what i thought... what about my fuel mix, is it correct?

 

he also did not say anything about a leak/vacum test.

[Eddy_t]

Don't know mate, it's difficult to tell, that's why I use aspen in my personal equipment. The 'wrong fuel mix' is usually a cop out trick for 'I can't be arsed to fix it'. Unless you're using cheapo oil and old petrol at 50:1! But as I said, the bore looks shiny and new, the piston has a few scuffs, but that's from being used

[spudulike]

The damage looks like a small cavity in the casting and is of no consequence.

[mowandgo]

I would be tempted to find a good working carburettor and swap it this way you can eliminate any carb trouble it's possible that you might have a hair line crack in carb body sucking in air or something. I have had similar trouble before and you can't beat sawing parts you know work for proses of elimination. Works every time for me.

[spudulike]

Your fuel reminds me of the plastic bottles you see by the side of the motorway when drivers have got stuck in the traffic a long time

[Eddy_t]

Your fuel reminds me of the plastic bottles you see by the side of the motorway when drivers have got stuck in the traffic a long time

 

 

Aren't you on holiday still? Is the sun, sea and sand not doing it for you

[chrismechanic]

Your fuel reminds me of the plastic bottles you see by the side of the motorway when drivers have got stuck in the traffic a long time

 

oh.. i thought it would run ok on urine

i had to walk miles to find that bottle..

Edited September 21, 2014 by chrismechanic