1983 25 hp XD Merc

[skip44820]

I can't seem to find the idle adjustment screw on the XD model, Ive looked on youtube but don't see a lot of XD'S. Any help is appreciated.

 

[flyingscott]

Nothing special about an XD. Need serial # and is this a tiller or remote model

 

[skip44820]

Ser no 1025223 Tiller

 

[flyingscott]

the small screw with no head

 

[skip44820]

So how do u adjust with no head and do u have photo of location

 

[racerone]

Look at the front of the carburetor.-----Look near the top.----Use a small screw driver and adjust as needed.

 

[flyingscott]

#34 it is literally called a headless screw. It Has a slot in it to adjust

 

[flyingscott]

The screw racer is talking about is # 16 that is the low speed mix. the one I pointed out is Idle speed.

 

[skip44820]

wrong carb. this bugger has the tillitson carb

 

[flyingscott]

Put up a pic of the carb and linkages on the side of the motor. What color are your stripes?

 

[Faztbullet]

Location is the nearly the same on Tilliston and Walbro carb, just a lil more to the right(#3)

 

[skip44820]

I set that at 2 turns out to start, turned in 1/8 at a time till ran real ruff, backed out same, turned in to a happy spot. Really poor design for a idle screw. Was more like I was adjusting a jet. Thank you

 

[Faztbullet]

That is a fuel mixture screw..it acts as a metering device , like a jet.