Poulan Pro PP4218AVX 42cc Basic muffler mod needs a carb
Vložit
- čas přidán 20. 08. 2022
- #Poulan #Craftsman #PoulanPro #PP4218AVX #ryobi #homelite #chainsaw
This is the Poulan Pro I was going to let my boy have but he says they do not have any use for it since they are just doing lawns and the season is close to a end for them. School starts next week. I used it to cut a small dead tree for the neighbor and it picked up a bad hesitation like it had in the original video from when we first got it. I tossed on a old carb from a parts saw but as you can see not much help. Looks like a new carb will have to be ordered for it.
Simple task to do I'll show you how to do that. In this video we cover a basic muffler mod on the cheap.
Thanks for watching. 637 subscribers thank you so much. - Sport
I have 4 of these saws right now with the intent to rebuild and sell them for mud. The biggest issue I’ve had with them is the exhaust choking out the powerhead. The other problem is the stupid fuel cap air vent, it’ll run good until you turn it off then you have to take off the fuel cap to let some air in or it won’t start.
I haven’t tried it yet, but I imagine putting a small hole in the top of the gas tank and inserting a jonsered air vent would make it miles better
The best mods for these saws are all just to increase airflow, first is the muffler, then cutting holes in the air filter cover and finally the gas tank, I promise you’ll have a saw that runs minty skookum so long as your seals don’t pull in air like a big Frenchman running after a Joe Louis van
Just found this exact chainsaw this morning in great condition. I just did new fuel lines today
You get a good deal on it?
Thanks for the video. It inspired me to tear into my own saw. I drilled a pattern of holes in those flared tubes and put them back in. For the outlet plate, I put it on the bench with the half-circle "outlet" overhanging the edge and the flat outside face against the bench surface. A couple wacks from a hammer with a big punch on the stud boss gave it a slightly arched shape. The straight edges get splayed out a little from the arch shape, but they can easily be bent to fit the muffler again with some pliers. I also flared the edges of the half-circle "outlet" a little. The slight arch shape makes a second outlet on the side beyond the screen. I also added a second nut over the screen which served as a spacer for the newly arched plate, and the original nut on the outside held it all together nice and tight.
I was pleased with the result. It was barely any louder and I noticed a little performance gain. I adjusted the carb a little and it's now running better than ever.
That’s good to hear 👍
With those Carbs I have found if you fill them with strait sea foam and let them sit for a week you can most often save them.
On my saw the h screw is like 2 3/4 turns out. I wired a cheap rpm gauge to the chain brake so I can monitor whats happening. Some videos i watched recommended gapping the plug to .30 thou and drilling 3 3/8 holes in the plastic air breather. This along with some carb fiddling for 2 strait days i got it idleing cutting and no more dieing after the cut. It 4 strokes nicely out of the cut too now so hopefully it will last.
I thought about trying Sea Foam. I had a couple I soaked in injector cleaner a while back. Helped some. Next time I’m out I’ll pick a can up. 👍
Great video, thanks... How does opening up the muffler like that effect compression? What's not enough and what's too much?
I was always told to just open them up a small amount so it would not effect the compression of the saw. I have looked up some videos in the past on after market mufflers for some reviews on them. All the reviews I’ve came across was saying you do not want to go to big on the muffler unless your saw has mod’s done. Like head work bigger piston that kind of stuff. With the little stuff I’ve done you can fill the difference.
Use a rubber band to hold screws in place 😊😊
Does that chainsaw of yours have a heat shutter winter baffle on it
I don’t believe it did. This one I believe just had the two tubes in it.
I hate to tell you but your crank case seal or seals are leaking. I have that same saw and a 2150 with bad seals. What can you do... Well that's easy tune the carburetor with two people. One sawing into a good piece of oak, the other guy will set the high side. Then set the low side the same way. Then use your idle screw to adjust the idle so the clutch engages the chain every few seconds then back it off to where it just stops engaging. It will never idle for any length of time my 4218AVX will idle about 8 to 10 seconds at best before having to give it a little gas. It will run great, just won't idle for crap and occasionally will wind down slowly as when you let off, as it doesn't have proper vacuum. Yes It Will Run For Decades Like That, And Never Die From It. Mine Is 18 years old with a bad seal for over a decade, and runs to this day. Keep it tune it, and use it. If it blows up throw it away for rebuild and put new seals in it then....Unless Your Really Bored And Like Abuse...lol. Take care my friend and keep them running.
Thanks for the info. I might have a couple of them with the same problem. Vacuum leak makes sense.
If I am correct, the next problem will be run on. When you let off of full throttle and it will slowly move down to idle. They are a pain to change out, but last time I looked was about 6 or 7 dollars delivered. The old metal body Poulans and Craftsmans never suffered this issue.
@@SuperMag357 I’ll have to look into that. Was trying to remember which Poulan I picked up and was messing with. Anyhow it was either the one in this video or a different one but it acted just like you are talking about. Used it to cut down a couple small like 8/10 inch diameter dead trees at the neighbors house and as long as the rpm’s was up it was fine. Back of the throttle and once it got to idle it would get choppy and stay. Was thinking it was the carb having problems but what you are saying makes since.
It’s common for the seals to be leaking and need replacement every two years
@@philliphall5198I heard on a forum that if you use a vacuum leak down tester on the saw and slowly pull moto seal in around the seals it’ll be like new again! I don’t have a tester so I’ve never tried, but I normally sand the bottom of the cylinder and clamshell face just a hair to give it a better seal
What size torx tool does it take to remove those two muffler bolts? Thanks.
I got mine of with a T25. I double checked it and I did take it apart with a T25 but the T30 fits solid. T25 has just a little play on mine.
Thanks so much for that quick reply. Just what I needed, (now I gotta get one that size). @@GenerationX1971
I'm trying to take the muffler off so I can inspect the piston for scoring / ring seizing.
@@steveandrews8301 there’s some pretty decent deals online for bits compared to going to one of the local hardware stores.
Most everything is T25 on poulan saws