Description
Overview:
This Genuine Husqvarna fuel primer pump (OEM No. 503 93 66-01) is a small, clear, flexible bulb with a durable black housing designed to prime the fuel system on petrol-powered tools. Pressing the bulb draws fuel through the lines to the carburettor, helping the engine start reliably from cold or after maintenance. Built from fuel‐resistant materials to handle regular use, it restores smooth starting and stable running. Ideal for Husqvarna disc cutters such as the K750 and K760, and widely used across many Husqvarna chainsaws, brushcutters, hedge trimmers, blowers and pole saws. A direct replacement for worn or perished bulbs, it helps keep professional and DIY machines dependable on site and in the garden.
Key Features:
- Genuine Husqvarna part for assured fit and function (OEM 503 93 66-01)
- Fuel‐resistant construction for long service life in tough conditions
- Clear bulb makes it easy to see fuel movement when priming
- Helps engines start more easily after storage, refuelling, or hose changes
- Designed for seamless integration with Husqvarna fuel systems
- Replaces cracked or hardened bulbs to cure poor starting and stalling
- Suitable for disc cutters, chainsaws, brushcutters, hedge trimmers, blowers and pole saws
- Straightforward like‐for‐like replacement with no modification required
Typical Applications:
Used to prime the fuel system before starting, particularly in colder weather, after running dry, or following fuel line, filter, or carburettor service. Common on construction and demolition sites for disc cutters, and in landscaping, arborist and grounds care work for handheld tools, helping reduce pull starts and downtime.
Also known as:
Purge bulb, carburettor priming bulb, manual fuel bulb, fuel squeeze bulb, hand primer, carburettor purge bulb, fuel primer button.
Fits Models:
135, 135E, 135R, 140, 140E, 223 L, 223 R, 223L, 223R, 225 AI 15, 225 AI 25, 225 L, 225 LD, 225AI15, 225AI25, 225B, 225H60, 225H75, 225HBV, 225L, 225LD, 225R, 225RD, 225RJ, 227 L, 227 LD, 227L, 227LD, 227R, 227RD, 227RJ, 232R, 232RD, 232RJ, 235FR, 235R, 235RII, 240RBD, 240RJ, 241R, 241RJ, 322 C, 322 E, 322 L, 322 T, 322C, 322E, 322L, 322R, 322T, 323 C, 323 E, 323 Ex, 323 L, 323 LD, 323C, 323E, 323Ex, 323HD60, 323HE3, 323L, 323LD, 323P, 323R, 323RII, 323RJ, 323RJX, 325 CX, 325 E, 325 LDx, 325 LXT, 325 Lx, 325 TX, 325CX, 325E, 325HD75 X-Series, 325HDA55 X-Series, 325HDA65 X-Series, 325HE3, 325HE3 X-Series, 325HE4, 325HE4 X-Series, 325HS75 X-Series, 325HS99 X-Series, 325LDx, 325LXT, 325Lx, 325P, 325RDX, 325RJX, 325RX, 325RXT, 325TX, 326 AI 25, 326 C, 326 CX, 326 ES, 326 EX, 326 HD75 X-Series, 326 HDA55 X-Series, 326 L, 326 LDx, 326 LS, 326 Lx, 326AI25, 326C, 326CX, 326ES, 326EX, 326HD60 X-Series, 326HD75 X-Series, 326HDA55 X-Series, 326HE3 X-Series, 326HE4 X-Series, 326HS75 X-Series, 326HS99 X-Series, 326L, 326LDx, 326LS, 326Lx, 326P, 326RJX, 326RX, 327 ES, 327 LDx, 327 LS, 327 Lx, 327ES, 327HDA65 X-Series, 327HE3 X-Series, 327HE4 X-Series, 327LDx, 327LS, 327Lx, 327P, 327P4, 327P5x, 327PT5S, 327RDX, 327RJX, 327RX, 333R, 333RJ, 334T, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 338XPT, 340, 340E, 343F, 343FR, 343FRM, 343R, 345, 345E, 345FR, 345FX, 345FXT, 345R, 345RX, 346XP, 350, 353, 355FRM, 355FX, 355FXT, 355RX, 356BF, 356BT, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450E, 450EII, 455 Rancher, 455 Rancher II, 455 RancherII, 455E, 455E Rancher II, 455ERancherII, 460, 461, 465 Rancher II, 465RancherII, 524 L, 524L, 525 LS Mark II, 525 LST Mark II, 525BX, 525HE3, 525HE4, 525HF3S, 525L, 525LK, 525LS, 525LST, 525P4S, 525P5S, 525PT5S, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT, 543RBS, 545, 545 Mark II, 545F, 545FR, 545FX, 545FXAT, 545FXT, 545FXTAT, 545G Mark II, 545RX, 545RXT, 545RXTAT, 550XP, 550XP Mark II, 550XPG, 550XPG Mark II, 555, 555FRM, 555FX, 555FXT, 555RXT, 556, 560XP, 560XPG, 562XP, 562XPG, 565, 572XP, 572XPG, K750, K760, Saw Attachment, T540XP, T540XPII
Alternate Part Numbers:
503 93 66-01, 503936601
Product Specifications
L&S Part No. | 503 93 66 01 |
---|---|
Part Type | Genuine Part |
Manufacturer | Husqvarna |
OEM No. | 503936601 |
Unit of Sale | 1 |
Applications | 135, 135E, 135R, 140, 140E, 223 L, 223 R, 223L, 223R, 225 AI 15, 225 AI 25, 225 L, 225 LD, 225AI15, 225AI25, 225B, 225H60, 225H75, 225HBV, 225L, 225LD, 225R, 225RD, 225RJ, 227 L, 227 LD, 227L, 227LD, 227R, 227RD, 227RJ, 232R, 232RD, 232RJ, 235FR, 235R, 235RII, 240RBD, 240RJ, 241R, 241RJ, 322 C, 322 E, 322 L, 322 T, 322C, 322E, 322L, 322R, 322T, 323 C, 323 E, 323 Ex, 323 L, 323 LD, 323C, 323E, 323Ex, 323HD60, 323HE3, 323L, 323LD, 323P, 323R, 323RII, 323RJ, 323RJX, 325 CX, 325 E, 325 LDx, 325 LXT, 325 Lx, 325 TX, 325CX, 325E, 325HD75 X-Series, 325HDA55 X-Series, 325HDA65 X-Series, 325HE3, 325HE3 X-Series, 325HE4, 325HE4 X-Series, 325HS75 X-Series, 325HS99 X-Series, 325LDx, 325LXT, 325Lx, 325P, 325RDX, 325RJX, 325RX, 325RXT, 325TX, 326 AI 25, 326 C, 326 CX, 326 ES, 326 EX, 326 HD75 X-Series, 326 HDA55 X-Series, 326 L, 326 LDx, 326 LS, 326 Lx, 326AI25, 326C, 326CX, 326ES, 326EX, 326HD60 X-Series, 326HD75 X-Series, 326HDA55 X-Series, 326HE3 X-Series, 326HE4 X-Series, 326HS75 X-Series, 326HS99 X-Series, 326L, 326LDx, 326LS, 326Lx, 326P, 326RJX, 326RX, 327 ES, 327 LDx, 327 LS, 327 Lx, 327ES, 327HDA65 X-Series, 327HE3 X-Series, 327HE4 X-Series, 327LDx, 327LS, 327Lx, 327P, 327P4, 327P5x, 327PT5S, 327RDX, 327RJX, 327RX, 333R, 333RJ, 334T, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 338XPT, 340, 340E, 343F, 343FR, 343FRM, 343R, 345, 345E, 345FR, 345FX, 345FXT, 345R, 345RX, 346XP, 350, 353, 355FRM, 355FX, 355FXT, 355RX, 356BF, 356BT, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450E, 450EII, 455 Rancher, 455 Rancher II, 455 RancherII, 455E, 455E Rancher II, 455ERancherII, 460, 461, 465 Rancher II, 465RancherII, 524 L, 524L, 525 LS Mark II, 525 LST Mark II, 525BX, 525HE3, 525HE4, 525HF3S, 525L, 525LK, 525LS, 525LST, 525P4S, 525P5S, 525PT5S, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT, 543RBS, 545, 545 Mark II, 545F, 545FR, 545FX, 545FXAT, 545FXT, 545FXTAT, 545G Mark II, 545RX, 545RXT, 545RXTAT, 550XP, 550XP Mark II, 550XPG, 550XPG Mark II, 555, 555FRM, 555FX, 555FXT, 555RXT, 556, 560XP, 560XPG, 562XP, 562XPG, 565, 572XP, 572XPG, K750, K760, Saw Attachment, T540XP, T540XPII |
Machine Type | Disc Cutters, Chainsaws, Pole Pruners, Brushcutters, Hedgetrimmers |
Fits Brands | Husqvarna |
Fits Models | K750 | K760 | 340 | 135 | 225H60 | 225H75 | 323HD60 | 323HE3 | 325HD75 X-SERIES | 325HDA55 X-SERIES | 325HDA65 X-SERIES | 325HE3 | 325HE3 X-SERIES | 325HE4 | 325HE4 X-SERIES | 325HS75 X-SERIES | 325HS99 X-SERIES | 326HD60 X-SERIES | 326 HD75 X-SERIES | 326 HDA55 X-SERIES | 326HE3 X-SERIES | 326HE4 X-SERIES | 326HS75 X-SERIES | 326HS99 X-SERIES | 327HDA65 X-SERIES | 327HE3 X-SERIES | 327HE4 X-SERIES | 525HF3S | 135E | 323P | 140E | 325P | 326P | 327PT5S | 327P | 525P4S | 525P5S | 525PT5S | Saw Attachment | 334T | 338XPT | 340E | 345 | 345E | 346XP | 350 | 353 | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 445 | 445E | 445EII | 445II | 450 | 450EII | 455E | 455E RANCHER II | 455 RANCHER | 455 RANCHER II | 460 | 461 | 465 RANCHER II | 545 | 550XP, 550XPG | 555 | 556 | 560XP, 560XPG | 562XP, 562XPG | 565 | 572XP, 572XPG | T540XP | T540XPII | 135R | 223 L | 223 R | 225R | 225RD | 225RJ | 227RD | 227R | 227RJ | 232R | 232RD | 232RJ | 235FR | 235R | 235RII | 240RBD | 240RJ | 241R | 241RJ | 322R | 323R | 323RII | 323RJ | 323RJX | 325RDX | 325RJX | 325RX | 325RXT | 326RJX | 326RX | 327RDX | 327RJX | 327RX | 333R | 333RJ | 335FR | 335R | 335RJX | 335RX | 336FR | 336FRD, 336RK | 343F | 343FR | 343R | 345FR | 345FX | 345FXT | 345R | 345RX | 355FRM | 355FX | 355FXT | 355RX | 225B | 225HBV | 356BF | 525BX | 356BT | 525L | 525LK | 525LS | 525LST | 525RJD | 525RJX | 525RK | 525RS | 525RX | 525RXT | 535FBX | 535LS | 535RJ | 535RX | 535RXT | 545FR | 545FX | 545FXAT | 545RX | 545RXT | 545RXTAT | 555FRM | 555FX | 555FXT | 555RXT | 545FXT | 545FXTAT | 223 L | 225 L | 225 LD | 227 L | 227 LD | 322 C | 322 E | 322 L | 322 T | 323 C | 323 E | 323 Ex | 323 L | 323 LD | 325 CX | 325 E | 325 LDx | 325 Lx | 325 LXT | 325 TX | 326 C | 326 CX | 326 ES | 326 EX | 326 L | 326 LDx | 326 LS | 326 Lx | 327 ES | 327 LDx | 327 LS | 327 Lx | 335 LS | 335 LX | 524 L | 535 LK | 225 AI 25 | 225 AI 15 | 326 AI 25 | 550XP Mark II | 545 Mark II | 545G Mark II | 550XPG Mark II | 525HE3 | 525HE4 | 327P4 | 327P5x | 525 LS Mark II | 525 LST Mark II | 525RX Mark II | 525RXT Mark II | 543RBS | 545F | 343FRM |