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Chainsaw

Poulan Pro PP4218A

2-Stroke

The Poulan Pro PP4218A is a 42cc 2-stroke chainsaw and one of the most popular entry-level chainsaws sold in the United States, commonly available at home improvement stores with an 18" guide bar. Built on the Poulan Pro consumer platform shared with the Husqvarna consumer lineup, it suits homeowner firewood cutting and occasional felling of small to medium trees. The PP4218A runs a Zama carburetor and uses NGK BPMR7A or Champion RCJ6Y spark plugs. Common maintenance items are the air filter, fuel filter, primer bulb, and fuel lines. A high-value option for first-time chainsaw buyers.

Verify before ordering: Fitment can vary by serial number, production date, region, and sub-model. Match the OEM number and physical dimensions before ordering.

Poulan Pro PP4218A quick specs

Equipment
Chainsaw · 2-Stroke
Covered Parts
Spark Plug, Air Filter, Fuel Filter, Carburetor, Recoil Starter, Ignition Coil, Primer Bulb, Fuel Line Kit, Chain, Guide Bar
OEM References
952030150, 530057869, 530095646, 545070601, 530071966, 545115801, 530047721, 580727101, 952051338, 952044689
Model Family
PP4218A, PP4620AV
Data Confidence
Not yet independently reviewed

Quick Fitment

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Tune-Up Kit

Common service bundle: spark plug, air filter, fuel filter, carburetor, primer bulb, fuel line kit.

Maintenance Interval

Inspect filters and fuel lines each season, replace spark plugs during annual service, and service carb/fuel-system parts when starting or idle symptoms appear.

Before You Buy

  • Confirm the full model is Poulan Pro PP4218A, not just the family name.
  • Check serial number, production date, and regional variant before ordering.
  • Match the old OEM number stamped on the removed part when available.
  • Compare dimensions, plug gap, thread, fuel line diameter, or chain pitch/gauge where applicable.

Common Mistakes

  • Ordering from a family listing without checking the exact sub-model.
  • Buying a kit that includes the headline part but wrong gaskets, lines, or bulb size.
  • Choosing the wrong carburetor revision when multiple versions were used.
  • Assuming all fuel line kits use the same diameter and routing.
  • Installing the correct plug number with the wrong gap.
  • Matching bar length but missing pitch, gauge, or drive-link count.

Symptoms Map

Won't start

Spark plug, fuel filter, primer bulb, carburetor

Starts then dies

Fuel filter, fuel line kit, carburetor

Bogs under throttle

Air filter, carburetor, spark plug gap

Primer will not fill

Primer bulb, fuel line routing, in-tank filter

Cuts slowly

Chain pitch/gauge, bar wear, drive links

Replacement Options

Best OEM equivalent

Start with OEM references 952030150, 530057869, 530095646, 545070601 and match the removed part before choosing a listing.

Named part options

Cross-check named parts such as Champion RCJ7Y (spark plug), Stens 605-362 (air filter), Stens 610-035 (fuel filter) against the OEM number, identity label, and dimensions.

Best for annual tune-up

Bundle spark plug, air filter, fuel filter when servicing the Poulan Pro PP4218A at the start of the season.

Best if replacing fuel system

Compare the fuel filter, carburetor, primer bulb, fuel line kit together so line routing, bulb size, filter style, and carburetor connections match.

Best chain/bar combo

Match chain specs together, especially pitch, gauge, drive links, and bar mount details.

Best budget kit

Use kit listings only when every included part matches this model page; cheap kits often mix correct headline parts with wrong bulbs, lines, or gaskets.

FAQ

Should I buy OEM or aftermarket parts for the Poulan Pro PP4218A? Use OEM when the part controls fuel metering, ignition, or safety. Aftermarket kits can be useful for routine filters, bulbs, plugs, and tune-up bundles when the OEM number and dimensions match.

How do I avoid ordering the wrong carburetor for the PP4218A? Match the carburetor number stamped on the removed unit, then compare linkage, choke setup, primer routing, gasket stack, and fuel-inlet direction.

What should I check before replacing fuel-system parts? Photograph the old fuel-line routing, match line diameter and filter style, and compare primer bulb size before buying a kit.

What chain details matter besides bar length? Match pitch, gauge, and drive-link count against the bar stamp, old chain, and drive sprocket. Bar length alone is not enough.

Related Repair Guides

Champion RCJ7Y NGK Equivalent: BPMR7A Cross Reference & GapNGK's catalog cross-references Champion RCJ7Y to NGK BPMR7A (stock no. 4626). See the shared specs and the gap used on Husqvarna and Poulan Pro chainsaws.

As an Amazon Associate, WhichPartFits earns from qualifying purchases. Match the OEM number, dimensions, and model variant before buying.

Spark Plug

OEM952030150
Dimensions
Champion RCJ-7Y; 0.025" gap
Variant notes
Same plug used across Poulan Pro 42cc family

Air Filter

OEM530057869
Variant notes
Fits PP4218A and PP4218AV variants; check shape before ordering — some variants use 530057925

Fuel Filter

OEM530095646
Variant notes
In-tank fuel pick-up assembly

Carburetor

OEM545070601
Variant notes
Zama W26 (C1M-W26 series); also listed as C1M-W26A/B/C variants

Recoil Starter

OEM530071966
Variant notes
Kit-EPS Starter Pulley; includes shoulder screw, hub, and spring (refs 20,21,22,30)
  • No named part listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Ignition Coil

OEM545115801
Variant notes
Module-Ignition; specific to PP4218A (differs from PP4620AV)
  • No named part listing is published for this part yet. Use the OEM reference and verify with a dealer or service manual before ordering.

Primer Bulb

OEM530047721
Variant notes
Snap-in purge bulb

Fuel Line Kit

OEM580727101
Variant notes
Includes fuel line and fitting; listed twice in IPL (refs 5 and 17)

Chain

OEM952051338
Dimensions
18", 3/8" LP pitch, .050" gauge, 62 drive links
Variant notes
Also superseded by 581562301; verify drive link count matches bar

Guide Bar

OEM952044689
Dimensions
18", 3/8" LP pitch, .050" gauge