charlesv842
ArboristSite Lurker
Quick question: when you have a low-end model, often the piston will be chrome plated. Do they only plate the skirt, or do they just let the entire thing get plated?
Some low end Poulans have a plated piston and uncoated cylinder. I've never worked on one though.
Definitely.Chris, you said yours is plated on top?
They may have changed coating/finish types on the later 42cc clamshell engines - earlier ones (non-strato) used chromed pistons/bare cylinders, while Poulan Pro versions used chromed cylinders/bare pistons. I believe they made both variations of other saw models too, including the 46cc clamshells as well as older models.I know that the Poulan 42cc clam shells comes with two possible setups. Both using NCC setups. (NCC = Nickel Ceramic Coating) The nickel burns off leaving only the ceramic behind.
1> NCC cylinder and plain piston. Very finish on the initial cylinder finish.
2>NCC piston and plain cylinder. And yes they coat the entire piston but the finish is very smooth and I can't tell from a plain cylinder; just a small size difference.
Note: The NCC piston with not fit the NCC cylinder and the plain piston is too loose in the plain cylinder. I learn this from converting a Poulan 4218 over from the NCC piston to the NCC cylinder. That plain cylinder was easily destroyed on the saw I was saving.
Poulan 3000 Countervibes were made that way. I'm not sure about the 3400. The 4000 had a chrome/NiSi bore with bare piston, the way all pro saws are made.
Some low end Poulans have a plated piston and uncoated cylinder. I've never worked on one though.
Quick question: when you have a low-end model, often the piston will be chrome plated. Do they only plate the skirt, or do they just let the entire thing get plated?
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