"Step-by-step..extremely detailed..Spiral binding makes it easy to fold over while you're working.." -- Motorbooks International
"The author knows old Harleys and he knows how to convey that information to the rest of us". --Whitehorse Press
From the Publisher
Creating this book was a mountain of work for me, with most of the mechanical facts provided by Mark Stettler. I "brained" the Panhead cover-gasket procedure and some other tips, but the push rod adjustment, motor fit and clearances are all from Stettley.
Mark "Stett" Stettler has worked on motorcycles for forty years (and not all of them on Harleys). An M.M.I. graduate, (Phoenix, AZ.) he was Top Student in his first (7) clinics (scoring Perfect, in both 2 and 4 Stroke Performance). He was Top Graduate in the Early Model Class, scoring the highest score in the history of M.M.I., on the Early Model Final (i.e.; top 99%-tile); and top Graduate in his class in Late Model Electives #410, Stett was hired three weeks before graduation by San Diego H-D. He stayed with the dealership for four years as an engine builder and machinist; during which time he completed all (per full week) required Update Classes, in Milwaukee and Phoenix (i.e. Engine 1 & 2, Chassis & Suspension and Electrical Systems). I list his levels of technical knowledge because, in my opinion, mechanical discipline is a developed skill.
Mark opened "Stetts Iron Horse Ranch" in El Cajon, California, in 1997, as a factory certified H-D Master Technician. Over the past two years, Stetts crewed with well-known "Bonnie" Truett (of Truett & Osborn fame) and built motors for the AHDRA Race Team entry "Nasty Habit," for rider and owner Kinzie Bolson. All mechanical facts in this owners guide have withstood scrutiny and we welcome any suggestions. (A government engineer/enthusiast uses our book in his lecture circuit, and took the time to review the information and questioned us, as to whether or not there was an "applied force" not calculated [in our zero correction] for a torque wrench "foot adapter". The engineer was going to contact us if his own textbooks proved an error, but all facts remain unchallenged to this date).
Our clearances for valve stem to guide bores are tighter than OEM clearances, because modern valve machining is capable of creating a more exact fit. Earlier valve operations relied on loose valve stem to guide tolerances, as the in-line boring equipment of the 1940's and '50's was not as precise, and the valve needed to "find" its' seat. The end result of yesteryear did not produce as accurate an in-line assembly, once the procedure was completed.
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