Honda CT110 1986-2013 Service Manual

By 1986, the CT110's US market run had come to a close — but that was really just the halfway point of the model's actual life. In Australia and New Zealand, where the bike earned its enduring nickname "Postie Bike" through decades of service with Australia Post and New Zealand Post, the CT110 kept rolling off Honda's Kumamoto Factory line all the way through 2013, becoming the best-selling motorcycle in Australian history along the way.

Power comes from a 105cc air-cooled SOHC single, nearly horizontal in the step-through tube frame, delivering modest but genuinely bulletproof output through a semi-automatic four-speed transmission with centrifugal clutch — no clutch lever required, just shift and go. A 2:1 gear reduction dual-range sub-transmission, engaged via a small lever, let the CT110 climb genuinely steep grades that would stall a standard commuter bike, a feature specifically built for rural delivery routes and farm use rather than road speed. Ignition evolved across this span from points-based systems on the earliest bikes to CDI ignition standard by 1982, with a shift from 6V to 12V electrical systems arriving in 1991 for postal-service bikes specifically.

Genuine engineering updates continued well past the CT110's 1986 US departure: a rear wheel redesign affecting the rim, hub, driver rubbers, sprocket, brake shoes, and swingarm arrived in 1986 and again in 1999, alongside a front fork update in 1999. The bike's simple, front-and-rear drum brake, chain-drive, step-through architecture stayed remarkably consistent throughout, prized for reliability over refinement — a trait that kept Australia Post ordering new units well into the 2010s, right up until the model was finally phased out in favor of the NBC110 and, eventually, electric alternatives.

This factory service manual covers the procedures, torque specs, and diagrams needed to keep a 1986-2013 CT110's engine and driveline running the way Honda built it.