Annolai Ignition Coil 573935702 for Husqvarna/Jonsered Chainsaws – Fits 435/445/450 Series

Overview

The Annolai 573935702 ignition coil is a purpose-built replacement designed to fit a broad range of Husqvarna and Jonsered chainsaws. Crafted to align with original specifications, this coil is engineered to deliver consistent spark energy and reliable ignition under typical cutting tasks, helping your saw start with confidence and maintain steady performance across work sessions.

Whether you’re a weekend woodsman or a professional service technician, this coil is intended to support smooth engagement and dependable operation. Its durable construction and straightforward replacement process make it a practical option for restoring your saw’s ignition behavior without unnecessary downtime.

Key Benefits

• Replaces multiple OEM and service numbers for Husqvarna and Jonsered models, simplifying repairs.
• Designed to fit Husqvarna 435/435E, 445/445E, and 450/450E chainsaws, as well as Jonsered CS2240/CS2240S/CS2245/CS2250 variants.
• Enhanced ignition energy potential may support easier starts and steadier engine response during cutting.
• Easy to replace with common hand tools, reducing maintenance time and keeping saws in service.

Compatibility & Fit

This coil is compatible with a range of popular models across Husqvarna and Jonsered lines, including the 435, 435E, 445, 445E, 450, and 450E series, along with Jonsered CS2240/CS2240S/CS2245/CS2250/CS2250S machines. Verify your part numbers (such as 573935702 and related replacements) to ensure a proper match before purchase.

Installation & Care

• Prepare by powering off the machine, disconnecting the spark plug lead, and allowing the engine to cool before starting.
• Remove the old coil, note connector orientation, and attach the new coil with standard securing hardware.
• Reconnect the spark plug lead, perform a test spark check, and inspect for firm connections before operation.

Routine care includes keeping electrical connections clean and dry, inspecting for corrosion, and replacing worn wiring as part of regular maintenance. While installation is designed to be straightforward, refer to your chainsaw manual for model-specific steps and safety guidelines.

What to Expect

Users often notice crisper starts and more dependable ignition timing when the coil is in good working order. This replacement is intended to support consistent spark generation and reliable engine engagement, helping you tackle tasks with less interruption and more predictable performance.