Honda CB125T – Stripping an oil burner

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15 Page – PDF Download – Complete Series – Honda CB125T

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15 Page – PDF Download – Complete Series – Honda CB125T

Stripping an oil burner

Rod Gibson begins a three-part engine rebuild of an 125 Honda with a copious thirst for oil.

Angie’s Honda CB125TDC has been languishing in a rather unloved state in the back of my shed for over a year, waiting for me to sort it out.

Bought a couple of years back to replace her tired CG125, the little Superdream had come with a history of problems and mishaps.

Despite being roadworthy and carrying a full MOT, the bike smoked like a two stroke and slurped copious quantities of oil during the brief time she’d ridden it before admitting defeat and opting for the luxury of a 3-series BMW fo the daily commute.

We were unaware that the previous owner had had some engine work carried out, but a lubrication failure had damaged the new pistons he’d fitted.

The bike had subsequently been fitted with secondhand barrels and pistons which clearly weren’t up to the job.

As a top end strip was obviously required I decided to go the whole hog and take the engine out so we could tidy up the frame and running gear. And of course, having the engine out and on the bench I could hardly resist splitting the cases and taking a look inside. Turns out it’s a good job I did…

With the tank, seat and panels removed I started by removing the regulator/rectifier and ignition coils from the frame. The coils can be left on their mounting plate but it’s worth making a note of the colour codes on the low tension leads.

Next the clutch, rev counter and choke cables can be removed. The choke cable attaches to the left hand carb and is held in place with a single cross head screw, which might prove reluctant to move. A little gentle persuasion should free it off. This choke cable is quite badly frayed and will be replaced later…”

15 Page – PDF Download – Complete Series – Honda CB125T

 

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