Making A Walbro HDA-199 Fit On A 262XP

[Mastermind]

I'm building a 262XP for @trooney and needed a HDA-87, but didn't have one.

So.......I decided to see if I could make a HDA-199 work on it.

The 199 as configured for the 357XP.

 

[Mastermind]

Now after swapping the HDA-120 shafts into the 199.

 

[Mastermind]

Throttle bore HDA-120


Throttle bore HDA-199

 

[Mastermind]

It's a simple swap.......except.

The throttle plate size is a lot different, so the groove that the plate fits in must be made longer in the 120 shaft, also the notch must be widened.

This pic shows the difference in size.

 

[Mastermind]

The choke operates backward between the two carbs, so some tweaks have to be done to allow this.

In this pic you can see that I notched the choke plate to clear the main nozzle.



And this shows some more clearance work.....

 

[Duane(Pa)]

Yankee ingenuity there Randy. Can't never tried...

 

[Milkman31]

Where there is a will there is a way!!

 

[Mattyo]

so?????? does it work????

 

[Barneyrb]

Yankee ingenuity there Randy. Can't never tried...

Down here we prefer the term "southern engineering".

 

[Mastermind]

so?????? does it work????

Of course.

 

[lwhaples]

Nice work. Now if a man could patent all the cool tricks.

 

[trooney]

Good go Randy! I'm excited to get the 262 with an original MM Hda 199 on it! How does she run?

 

[Mastermind]

Good go Randy! I'm excited to get the 262 with an original MM Hda 199 on it! How does she run?

The sealer on the jug base has to dry for 24 hours or so.

 

[Mastermind]

Here's your saw Tom. It turned out pretty nice.

 

[trooney]

It turned out real well Randy. Thanks for being the gentleman and friend that you are!!

 

[Onan18]

It turned out real well Randy. Thanks for being the gentleman and friend that you are!!

TROOF! Randy is a class act, and a real good friend to boot.

 

[trooney]

Man them covers look nice!

 

[Mastermind]

It's not perfect, but it ain't bad. A little chain rash on the PTO side, the decals are sorta rough, but it's got all the air injection parts, and the seal around the intake block is intact.

 

[Wagnerwerks]

I'm inspired.

 

[Mastermind]

You can do it.