6 Pcs 530047721 503936601 188-512 Primer Bulb

6 Pcs 530047721 503936601 188-512 Primer Bulb

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$9.36
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$9.36
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6 Pcs 530047721 503936601 188-512 Primer Bulb

Key Features

  • Package contains 6 primer bulbs.
  • Snap-in design for direct replacement.
  • Constructed from fuel-resistant polymer to prevent hardening and cracking.
  • Dimensions: Approximately 1-5/16 in (height) x 7/8 in (outer diameter).
  • For use with 2-cycle small engines to assist with cold starts.

Replaces / Cross-Reference Part Numbers

  • 188-512
  • 188-512-1
  • 503936601
  • 530047721
  • 0057003
  • 188-12-1

Compatibility & Fitment

  • Fits Brands:
    • Poulan
    • Ryobi
    • Echo
    • Homelite
    • Bolens
    • Husqvarna
  • Fits Equipment:
    • String Trimmers
    • Leaf Blowers
    • Chainsaws
    • Brush Cutters
  • Fits Walbro Carburetor Models:
    • WT-23A
    • WYJ-33
    • WYJ-34
    • WYJ-45
    • WYJ-92
    • WYJ-94
  • Select Confirmed Models:
    • Poulan: PP136, PP136E, PP330, PPB100E, PPB150E, PPB200, PPB250E, PPB300E, PPB350
    • Ryobi: BP42
    • Husqvarna: K750, K760

When to Replace

  • The existing bulb is cracked, brittle, or has turned opaque.
  • The bulb does not return to its original shape after being pressed.
  • Fuel is leaking from or around the primer bulb.
  • The engine is difficult to start and fails to draw fuel.

Installation Tips

  • Disconnect the spark plug wire for safety before performing service.
  • Observe or photograph the fuel line connections before disassembly.
  • Use small pliers to remove the retaining clip and old bulb.
  • Clean the carburetor housing surface before installing the new bulb.
  • Ensure the new bulb is fully seated to create a proper seal.
  • Reconnect the fuel lines to the correct inlet and outlet ports.
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  • WIDE COMPATIBILITY

    WIDE COMPATIBILITY

    Compatible with specific Trimmer/ Chainsaw/ Leaf Blower/ Pole Pruner Saw models of: Poulan, Echo, Stihl, Ryobi, Husqvarna, Bolens
  • DURABLE MATERIAL

    DURABLE MATERIAL

    This part is made of sturdy material which is flexibility and flame-retardant, enhancing durability
  • SAVING SOLUTION

    SAVING SOLUTION

    Enjoy the great feeling when your engine is repaired and works properly like before - BlueStars brings DIY solutions to help you deal with any trouble
  • IMPORTANT NOTE

    IMPORTANT NOTE

    This is a replacement part designed to be compatible with certain appliances. Any brand names mentioned are used solely to indicate compatibility
THE REPLACEMENT PART THAT KEEP YOUR YARD LOOKING FRESH!

THE REPLACEMENT PART THAT KEEP YOUR YARD LOOKING FRESH!

Brand Model Number
REPLACEMENT PART NUMBERS MTD 791-683974B; Walbro 188-512 188-512-1; Husqvarna 503936601 530047721; Ryobi 683974 683974B UP04033 300780004 300780001; Homelite 01183 1183 300780002 308088001; Echo 12318110860 12318139130 3801081330 5213001400; Poulan 35879158 35879558 35879898 3587952 35879556 35879516 3587958
Husqvarna 125B 125BX 125BVX 225BX 225HBV 356BF 356BT 235 235E 236 236E 240 240E 123L 225 232L 227L 227LD 227R 227RD 240L 322C 322L 322R 323 325 325LX 325LXT 325RX 325RXT 325RDX 325RJX 325CX 326 326C 326L 326LX 334T 338XPT 340 340E 345 346XP 350 350EPA 353 435 435E 440E 445 445E 450E 455 455E Rancher 460 chainsaw
POULAN CHAINSAW P3314 P3314WS P3314WSA P3416 P3516PR P3816 P4018 P4018WM P4018WT P4018WTL PP3416 PP3516 PP3816 PP4018 PPB3416 PPB4018 PPB4218 P3818AV P4018AV P4018AV-BH Pro PP3516AVX PP3816AV S1970 SM4218AV
POULAN STRING TRIMMER WT3100 31WG BC3150 PP031 PP033 PP035 PP036 PP131 PP133 PP135 PP136 PP136E PP330 PP331 PP333 PP335 PP336 PP338PT PPB100 PPB100E PPB150E PPB200 PPB200E PPB250E PPB300 PPB300E PPB32SST PPB350 SM132 SM132LE S31BC S31SNG S31SNGBC S31SST
POULAN POLE PRUNER / POLE SAW PP445 PP446 PP446E PP446ET PP446T SM446E
STHIL FS36 FS40 FS44 FS44R trimmer
ECHO CS300 CS301 CS305 CS306 CS340 CS341 CS345 CS346 CS3000 CS3400 CS3450 CS271T CS303T CS310 CS352 CS353ES CS355T CS360TES CS361P CS370 CS370F CS400 CS400F CS420ES CS450 CS450P chainsaw
Ryobi BP42 RY08420 RY08420A RY42BPEMC RY42WB leaf blower
Ryobi 600r 700r 700rVP 704r 704rVP 705r 720r 725r 725rE 750r 765r 766r 767r 770rEB 775r 790r trimmer
Bolens BL100 BL150 BL250 trimmer, BL410 tiller / cultivator
McCulloch 3210 3214 3216 3200 3205 4600 5000 3020 4700 2012 Chainsaw
Manufacturer
‎BlueStars
Brand
‎BlueStars
Model
‎530047721 503936601 188-512
Item Weight
‎0.634 ounces
Package Dimensions
‎2.4 x 2.09 x 0.87 inches
Manufacturer Part Number
‎‎530047721