Connecting rod link rod designed as a direct replacement for HS81 HS81R HS81T HS86 86R 86T trimmer models Key benefits Restores smooth engine operation by replacing a worn or damaged connecting rod Direct replacement for part numbers 4237 034 1503 and 42370341503 Simple installation for maintenance or , compatible with listed trimmer models Built for reliable performance and durability in typical trimming conditions Product highlights Function: transfers piston motion to the crankshaft to maintain engine timing and compression Compatibility: fits HS81 HS81R HS81T HS86 86R 86T trimmer models using the listed part numbers Fit and installation: designed as a direct replacement to match original mounting points and clearances Inspection advice: carefully review the product dimensions and the photos provided to confirm correct fit before installation Typical use scenarios a failed connecting rod after engine noise or loss of power to restore normal operation Include in an engine rebuild kit when performing routine maintenance on a trimmer that uses the listed models Keep as a spare part for field repairs to minimize downtime during landscaping or property maintenance Notes Verify compatibility by checking the part numbers 4237 034 1503 and 42370341503 against your equipment Compare the supplied photos and measurements with your existing part to ensure a correct match before ordering