Sears 917.353750 Chainsaw Help!

[backhoelover]

have a pic might have one

 

[backhoelover]

sound like needle is stuck open need to pressure test carb

 

[backhoelover]

or getting stuck also a hard diaphragm

 

[Opihi59]

Not sure a primer helps on these carbs. Make sure the pulse line is open, this carb requires this. Just follow the pipe cleaner.....

 

[backhoelover]

Need to pressure test carb u can build a tester for 25.00 I'll send u a pic when I get home

 

[ronniemadeit]

Not sure a primer helps on these carbs. Make sure the pulse line is open, this carb requires this. Just follow the pipe cleaner.....

I installed the primer button temporarily to when I noticed that after several pulls that the line was without fuel. I did the pipe cleaner test and it appears to b going all the way through. Seems odd that the fuel in the line "backs out" into the tank. I have been meaning to snap a few pics. I suppose I will do that now while it is disassembled. I appreciate you guys willingness to help and how dedicated everyone is to getting a problem solved. Kinda feels like I'm not alone on this.

 

[ronniemadeit]

Cool tha

Need to pressure test carb u can build a tester for 25.00 I'll send u a pic when I get home

cool that sounds promising

 

[backhoelover]

 

[backhoelover]

could also be a bad primer you can test the tool with the tool in pic i have a test sheet for you to go by but it is in word will have to send it email cause web site doesnt support word

 

[ronniemadeit]

I think I have all the equipment to make one of those. I failed to mention before that I fashioned the gaskets myself out of some material I got from NAPA. I made the cork gasket according to what I've seen in earlier posts regarding that. I'm in front of the saw now so I will update soon

 

[backhoelover]

check and make sure your gaskets are not making pooping sounds when yo u flex them

 

[ronniemadeit]

Not sure if this came out right. If so I will post more.

 

[backhoelover]

yes that is your reed vale case i need to see the other side need to make sure there is not gap between the reed and housing

 

[backhoelover]

how does the carb parts look

 

[Opihi59]

Reed valve gap. Make sure you don't have crud under the reeds, and that they aren't gapped open.

 

[ronniemadeit]

This is the carb and if I have to break it down again I will post pics of the reed valve.

 

[backhoelover]

also need to check nozzle check valve

 

[ronniemadeit]

What is the suggested gasil mix for this saw?

 

[Opihi59]

16:1 Lotta oil, lotta smoke.

 

[67L36Driver]

With non detergent 30 weight engine oil maybe.

Run 32:1 or 40:1 with your every day synthetic two stroke oil from the hardware store.

Less smoke and less deposites in the exhaust port.