Ill use this post to gather all information i can on rebuilding the engine on the Yamaha YBR 125 .
so far i have only done a top end rebuild , new piston and rings after having barrel honed
the bottom end so far seems bullet proof but i am sure ill do one eventually , i have stripped one out
and documented it , see the links below for all these posts and videos
if you have any advice on engine rebuild for the Yamaha YBR 125 , and would like to help out
let me know and ill upload it .
other posts of interest
Yamaha YBR 125 Clutch - rebuild
Yamaha YBR 125 Engine rebuild
Four stroke single
123.7cc
54mm bore
54mm stroke
10 to 1 comp
170 psi compression
Air cooled
All service settings for valves , head , piston , rings clutch etc are in the Haynes workshop manual id get one if you attempting to rebuild your engine it will be invaluable BUY HERE on Ebay UK
Check out complete engines for YBR 125 on Ebay UK here
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| Yamaha YBR 125 engine rebuild |
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| Yamaha YBR 125 engine rebuild |
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| yamaha YBR 125 engine rebuild |
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Yamaha YBR 125 engine rebuild |
Starter clutch / flywheel rebuild just done this today took some photos .
made them into video easier to upload - ill do engine rebuild one soon .
made them into video easier to upload - ill do engine rebuild one soon .
compression testing
Top end rebuild and removal
Gearbox
engine refit and removal
timing chain gear
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