78 -81 were 3 speed. 82 - 85 4 speed. Tmas ENGINE NUMBERS 1973.ATC70E-1000001 and up 1974.ATC70E-1100001 and up NO 1975 THROUGH 1977 MODELS BUILT 1978.ATC70E-2000007 and up 1979.ATC70E-2100001 and up 1980.TB03E-2000001 and up 1981.TB03E-2600001 and up 1982.TB03E-2700003 and up 1983.TB03E-2800001 and up 1984.TB03E-2900001 and up 1985.TB03E-3000001 and upWell the motor number says it's a 83', however, without it running i'm only felling 3 gears, all up. Motor # TB03E 302883, tells me it's an 83'. Do ya think it's a 4-speed? Revtor ncs expert profile download free apps for iphone.

Finding the engine serial number on a Honda motorcycle can be easy or more of a challenge, depending on the model of motorcycle. Cruisers have engines that are relatively exposed, and the engine number should be easy to spot. Sport bikes may have fairings that cover the engine, making the engine number more difficult to locate.

At first glance, a motorcycle engine serial number looks complex. However, motorcycle manufacturers create these numbers to convey key information in a small space. Knowing the rules of how Honda chooses numbers for their engines will provide information for ordering parts for your specific engine.

Steve Murray Hi Sam,Fantastic, works spot on:-) The wife can listen to her radio again.

Jan 23, 2018  Decoding Honda ATC motor serial numbers, determine ATC model and year. Model and year important for restoration projects, model and year important for getting parts, decoding Honda ATC engine. Dec 31, 2013 - a friend recently bought a house that had a 3 wheeler and 2 bikes in the shed and gave them to me but don't know much about 3 wheelers so.