170 chainsaw replacement carb

[Gord404]

Got a 170 stihl almost new and wantto toss the stock carb with H&L ajusments - what carb should I be looking for

 

[SteveSr]

Got a 170 stihl almost new and wantto toss the stock carb with H&L ajusments - what carb should I be looking for

Walbro WT-215 is what everyone uses. However, It is NOT a drop-in replacement. The air box has to be modified to accommodate the adjustment screws. I think that there are some threads on here on how to do this mod.

 

[Gord404]

Thankyou, is there any model that this carb was used on from factory built saws, just wonering.

 

[Lightning Performance]

Thankyou, is there any model that this carb was used on from factory built saws, just wonering.

Sure
If you have a snorkle it can be taken off and the cap plate used. Most times an interchangeable part.
017-180 use that little carb. 021-250 take the bigger carbs. 171-251 I'm not sure what they used in those models

 

[Gord404]

Well got about 100 carbs in a couple of boxes someone brought mw a couple of years ago, always looking through them when I need something and a number of small stihls in parts boxes - thanks

 

[J D]

The jet in the original carb can be replaced/ drilled out to properly tune it... its a pretty straightforward process

 

[SteveSr]

Thankyou, is there any model that this carb was used on from factory built saws, just wonering.

I believe that these were used in some versions of the 021, 023, 025 and possibly early MS versions of same.

 

[MEKinOL]

I’m really not a quitter. And I sent two 170 saws home not any better than they arrived. Just me I’m sure, imo they are great until they ain’t.

 

[Gord404]

I believe I tore down a 025 and its probably lurking in a parts box in my seacan I use for parts storage

 

[Gord404]

noticed how smoky and dirty this saw ran- watched a vidio where the guy cut ote the center piece of the muffler where all the little holes are under the screen - spark arester screen holder left intacked cleand the muffler up and put the plate and spark sceen back in, opened up the gills just a bit with a screwdriver still keeping them directionel and it runs fantastic runs clean and lots more balls - did the same to my older on - same thing- think they have to run so rich is jus to keep them runnig but always smoked more then it should- unburnt fuel= greasy muffler and plugged spark sceen IMO

 

[J D]

The ones I've seen have almost all been on the lean side... the newer the leaner. Id be hesitant to open up the muffler without being prepared to tach the saw & tune it accordingly afterwards

 

[Gord404]

Did dial them in and will go put one to work or a tank keepig a cose eye on heat - let it cool down and check the sparkplug color, if it its what I like to see- dark brown or dark grey then I'm fine in my my imo, white means you have a problem, I have neen tuning saws a lot of years, thanks for your advice