Ignition Coil compatible with HS 81R 81T 86R 86T HS81 HS81R HS81RC HS81T HS86 HS86R HS86T Part NO. For 4237 400 1302 42374001302 Package includes 1 x Ignition Coil Key benefits Restores ignition performance: replaces a worn or failing coil to help the engine start reliably and run smoothly. Direct fit compatibility: designed to match the listed model numbers and mounting points for straightforward replacement. Durable construction: rugged housing and secure terminal connections built for regular use in outdoor power equipment. What this part does Converts lowvoltage input into the voltage pulse needed by the spark plug to ignite the fuel mixture. Helps correct hard starting, misfires, rough idling, and loss of power caused by a faulty ignition coil. Important attributes Function: Ignition coil for small engine outdoor equipment. Compatibility: Compatible with HS 81R 81T 86R 86T HS81 HS81R HS81RC HS81T HS86 HS86R HS86T. Part NO. 4237 400 1302 42374001302. Fit: Compact design intended to align with original mounting locations and electrical connections for the listed models. Performance: Engineered to provide consistent spark delivery under typical operating conditions. Installation and use Simple replacement procedure using common hand tools; disconnect the spark plug and battery or ignition source before working on the system. Inspect wiring, connectors, and spark plug condition while replacing the coil to ensure performance. If unsure about fit or installation, consult a qualified technician or your equipment service manual. Typical use scenarios Seasonal maintenance: the ignition coil during preseason service to avoid starting problems during peak use. Postfailure : Swap in this coil after symptoms such as difficulty starting, intermittent misfires, or sudden loss of power. Workshop spare part: Keep as a spare in a for quick turnaround on common ignition problems for the compatible models. Compatibility reminder Please check carefully that this part number and the listed model numbers match your equipment before .