Need help please

[humanbeing]

QJ = https://en.wikipedia.org/wiki/Qianjiang_Motorcycle often branded as Keeway in int'l market QJ157FMI-2B shop manual https://shop1897.hstatic.dk/upload_d...vicemanual.pdf
If it's a CV carb. The diaphragm may torn a pinhole somewhere
Anyway the bike had such mileage. At least check the valve clearance & electric system (GS125 need reliable DC supply) 1st
Don't 100% trust that owner's manual. Just replace it w/ a new Japanese brand (NGK/ Denso) equivalent. Suzi said replaces it every 8000 km. QJ said relaces it every 6000 km.


Heat rating: Similar to NGK
R Resistor type NGK= R
T Projected (凸 Tū) center electrode insulator NGK= P
C Copper core center electrode NGK= S
Chinese "B" (10mm) = NGK "C" | Chinese "D" (12mm) = NGK "D"