86 Yamaha 150 - issue disassembling carbs for clean/rebuild

[rickclark]

I am unable to remove brass bypass screws on top of carb. Concerned too much torque w/screwdriver will damage groove in soft brass. All tips and suggestions appreciated.

 

[robert graham]

Maybe soak the carb overnight in a solvent like Berryman's B-12....might loosen some stuck screws/jets/etc.....

 

[gm280]

I agree with robert above as well. Also you can try a little heat with a heat gun or hair dryer and see if it works loose. Try to tighten it also and then loosen it. Some time that helps. If you get a perfectly fitting screwdriver that seriously fits that jet, it will apply a lot more torque without messing up anything... JMHO!

 

[rickclark]

Thanks, guys. I'll try both and report back,

 

[tinbeater]

Try tapping slightly on the end of the screw driver while turning it always seems to work for me.

 

[rickclark]

It's all about the right tools and equip. Moved from dining room table (recovering from back surgery) to the shop. Carb in vice and correct size long-handle , wide-blade screwdriver, and it took not a lot of effort to remove screws. Makes me feel foolish I asked for help. Thanks, guys.

 

[erniefish]

I always hit a large screw driver with a big hammer, they will come loose , scary but it works , good luck

 

[jerryjerry05]

The right tool is an amazing thing.
For years I fought with drain plugs that someone's screwed up.
I have a 10-11" 5/16 or 3/8 headed screw driver.
I haven't had a problem since.
I got it at Home Depot.

 

[Propwash79]

A little tip,if you have a soldering iron you use that to keep the heat local and that helps a lot.