This is easiest tap-to-advance head available on the market today
4 stroke-->Mulchmaster 550 Group
X-One (models 932723EX
CTH2542T (models 96061021800 year 2007
genuine Echo replacement part fits the revolutionary bump-feed G137 and G138 nylon heads
Husqvarna/AYP/Craftsman/McCulloch/Poulan Pro 36"/38"/42" Spindle Housing 128774, 532128774 248-025 This is easiest tap-to-advance headReplaces OEM: AYP 128774, Husqvarna 532 12 87 74, McCulloch 532 12 87 74, Poulan Pro 532 12 87 74, Stens 285 441 Jakmax: B1RS30 GA Spare: JAS5439 Stens: 285 441 Standard Pack: 1 Suits models: Husqvarna: 36" cut CTH160 (2007), CTH1736 (2007), CTH2036XP, CTH2038, CTH2238, LR10 (1993 ventilated deck models), LR12 (1994), LR120 (1996), LR121 (1996), LR130 (1999), LRH130 (1999), LT1536 (2005), LTH1536 (2005), 38" cut LR12 (1995), LRH130 (1996), LT120