SKU: 17182495142

585836101 Handheld Blower Ignition Module Coil - Fits Husqvarna 125B 125BVX 125BX - Replaces 545108101 545108101

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Description

585836101 Handheld Blower Ignition Module Coil - Fits Husqvarna 125B 125BVX 125BX - Replaces 545108101 545108101585836101 Ignition Module Coil for Husqvarna and Ryobi Handheld Blowers Key Features Precision Electronic Ignition: Engineered to provide a consistent, high intensity spark across the entire RPM range, ensuring reliable starting and smooth engine performance. Optimized Ignition Mapping: Specifically calibrated for small displacement 2 stroke blower engines, improving fuel efficiency and reducing emissions during high speed operation. Weather Shielded

585836101 Ignition Module Coil for Husqvarna and Ryobi Handheld Blowers

Key Features

  • Precision Electronic Ignition: Engineered to provide a consistent, high-intensity spark across the entire RPM range, ensuring reliable starting and smooth engine performance.
  • Optimized Ignition Mapping: Specifically calibrated for small-displacement 2-stroke blower engines, improving fuel efficiency and reducing emissions during high-speed operation.
  • Weather-Shielded Encapsulation: The internal circuitry is fully potted in high-grade, heat-resistant epoxy to protect against vibration, moisture, and debris common in lawn care environments.
  • Reinforced Spark Plug Lead: Features a high-tension wire with a durable silicone boot designed to resist cracking and electrical "arching" against the engine cylinder.
  • Direct Bolt-On Fitment: Designed to the exact mounting specifications of the original factory module, facilitating a straightforward "drop-in" replacement without modifications.

Replaces / Cross-Reference Part Numbers

  • Husqvarna: 585836101, 545108101, 5451 08 101
  • Homelite / Ryobi: 300953003, 300953001, 984883001, 984882001
  • Other: 850108101

Compatibility & Fitment

This ignition coil is a universal replacement for several popular handheld blower platforms. Key compatible models include:

  • Husqvarna: 125B, 125BVX, 125BX (Standard and E-series models).
  • Ryobi: Fits various 25cc and 26cc handheld blowers (e.g., RY08510, RY08544, RY08548).
  • Homelite: Compatible with many 26cc "Blower/Vac" models (e.g., UT08514, UT08544, UT08546).
  • Note: Always verify your original coil's mounting hole spacing and wire orientation, as these models occasionally used different engine suppliers.

When to Replace

  • No Spark Condition: The most common failure; the engine will not start despite having fresh fuel and a clean spark plug.
  • Stalling When Hot: The blower runs perfectly for 5–10 minutes but dies as the engine reaches operating temperature and won't restart until cooled (thermal failure).
  • Misfiring or "Stuttering": The engine hesitates at full throttle or has an inconsistent idle, indicating the coil is struggling to maintain a steady pulse.
  • Visible Insulation Damage: The spark plug wire is frayed, melted, or showing signs of being chewed by rodents, leading to a grounded ignition circuit.
  • Intermittent Kill Switch Issues: If the engine refuses to shut off or dies unexpectedly, the kill switch terminal on the coil may be shorting internally.

Installation & Timing Tips

  • The "Business Card" Gap: To ensure the strongest spark, the air gap between the coil legs and the flywheel magnets should be approximately 0.010" to 0.012". Use a standard business card as a gauge during installation.
  • Check the Ground Path: Ensure the mounting surfaces on the engine block and the coil legs are free of rust and oil. The coil grounds through its mounting bolts; a weak ground equals a weak spark.
  • Kill Switch Wiring: Be careful when attaching the small spade terminal for the stop wire. If this wire is pinched against the metal housing, the engine will never start.
  • Flywheel Magnet Cleanup: While the starter cover is off, use a rag to wipe metal shavings or sap off the flywheel magnets to ensure the strongest possible magnetic induction.
  • Spark Plug Health: It is highly recommended to install a fresh NGK BPMR7A (or equivalent) spark plug when replacing the coil to ensure the new module isn't stressed by a fouled plug.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17182495142

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4.1 ★★★★★
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M
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mp77
Chelsea, US
★★★★★ 4
Large is a little big for Bostons
Color: Dogwood (Brown), Size: Large (Pack of 1)
Seems to be durable for 2 VERY agressive chewer Boston Terriers. Cricket and Alice are shockingly good at chewing - grateful they pick to do so with thier toys. Trial vs other name brand competitor. PetStages' is a little larger so harder to bite on fir small dogs, but seems to be equally durable. While PetStages proudly states it has real wood fiber and scent (whoch I thought would win)... they prefered the other. Both dogs love to chew on real sticks. But, when the bossy one indicated she was taking over the stick the other dog had, they exchanged, and kept chewing, over and over, back and forth. I mean to say, whatever the prefered stick was at first didnt seem to matter later. These super hard chew toys do make me nervous. One dog broke a tooth last summer on a different brand toy, a very expensive extraction bill, and poor pup's terrible discomfort... but the other did not and has amazing white teeth, all around.... so.
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Reviewed in the United States on September 26, 2025
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Michael F Doyle
Charlottesville, US
★★★★★ 5
Great for teething puppies
Color: Dogwood (Brown), Size: Small (Pack of 1)
My pup absolutely loves this. Can keep him occupied for up to 45 min at a time. Pretty durable, too.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026
J
Verified Purchase
Just my opinion
Lowell, US
★★★★★ 5
The best chew ever for a strong chewer
Color: Dogwood (Brown), Size: Large (Pack of 1)
We have a 77lb goldendoodle who loves these. We’re lucky because he doesn’t chew on anything other than his toys, but when he starts on this…he really goes at it. It’s healthy, (not synthetic), doesn’t break apart, (no pieces to worry about him swallowing), it just perfect for him. The noise may get on your nerves but it’s a small price to pay to keep him from chewing on your furniture, shoes, or anything else a mischievous dog can find.
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Reviewed in the United States on May 30, 2026
K
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Kylie
Whiting, US
★★★★★ 3
Little pieces break off
Color: Dogwood (Brown), Size: Large (Pack of 1)
My dog is obsessed with this. It does last a long time even given her strong chewing capabilities. I wish it was a little bigger. The main reason I rated it so low is when my dog is chewing on this it breaks off a little plastic peice and sometimes it hits the back of her throat making her cough so you have to supervise with this.
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Reviewed in the United States on February 1, 2026
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Verified Purchase
Heidi 
New York, US
★★★★★ 5
Great for aggressive chewers
Color: Dogwood (Brown), Size: Large (Pack of 1)
My dog is an aggressive chewer so they are great for her. I would love to have one a bit thinner so it could fit in a holder so it is easier for her to hold while eating. This keeps her busy and is long lasting. I have purchased these multiple times.
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Reviewed in the United States on April 5, 2026

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