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Mastermind

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Pulled out the 10-10A yesterday, cleaned up the fuel system and decided to try without a carb kit. Got it to start and nearly run, with 1 turnout on both H & L. Way to much fuel even with both turned in to half turn. The walbro on this saw will need a kit as the valve under the welsh plug is most likely shot. It sure sounds good during the brief run periods.
The way I test welch plugs is with a blast of carb cleaner thru the low side adjustment needle hole. Stick the straw in there and give it a blast while watching the plug. Careful not to get it in your eyes.
 

av8or3

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I have always used nail polish to seal up Welsh plugs. I use red so I can see it around the plug after I wipe the excess off.
 

nbbt

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Well folks not the welsh plug, screen underneath or flapper valve under that screen under the smaller plug. The carb diaphragm was not assembled properly. The tab slot from the needle was sitting on top of the diaphragm pin left, should be like on the right.


20230309_135540[1].jpg20230309_135529[1].jpg
 

Squareground3691

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Well folks not the welsh plug, screen underneath or flapper valve under that screen under the smaller plug. The carb diaphragm was not assembled properly. The tab slot from the needle was sitting on top of the diaphragm pin left, should be like on the right.


View attachment 368069View attachment 368070
Yup , that’ll do it for sure ,
 

Czed

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Rebuilding a heavily used 288
I've found 6 different fasteners so farIMG_20230306_143345903_HDR.jpg
IMG_20230306_161340788_HDR.jpg
I'm surprised it ran at all the coil wire was just taped up and it was grounding out on the cylinder IMG_20230309_124950587_HDR.jpg
A friend gave me 24 of these 20 gallon containers I've been breaking saws down and putting them in them until all the parts arrive IMG_20230309_140907821_HDR.jpg
IMG_20230306_135713590_HDR.jpg
The owner bought it off a logger I know 20 year's ago but he says it's run great until the piston fried recently.
 

huskihl

Muh fingers look really big
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Rebuilding a heavily used 288
I've found 6 different fasteners so farView attachment 368091
View attachment 368095
I'm surprised it ran at all the coil wire was just taped up and it was grounding out on the cylinder View attachment 368092
A friend gave me 24 of these 20 gallon containers I've been breaking saws down and putting them in them until all the parts arrive View attachment 368093
View attachment 368094
The owner bought it off a logger I know 20 year's ago but he says it's run great until the piston fried recently.
There’s even a nice mix of metric and SAE in there
 

huskihl

Muh fingers look really big
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The wrap handle fasteners are 3/16 cylinder bolts forced into them.
Cylinder bolts are 1/4-20 also. The rest are mostly supposed to be m5. But yeah, some 8mm heads, some slotted, some Allen head. I’d throw some t27 back in it for *s-words and grins so it was complete
 
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