1985-1986 Honda Fourtrax 125 TRX125 Shop Manual, Page 114Get this manual
RECOIL STARTERALTERNATORCAM CHAIN TENSIONER
Loosen the air cleaner connecting tube bands and remove the connecting tube
Disconnect the alternator
coupler and reverse
switch wireRemove the subtransmission (page 1()'2)
Fl YWHEEL HOLDER 07725-0040000
(or band strap wrench commercially available in U.S.A
FL YW HEEL REMOVAL INSTALLATION
Hold the flywheel with the flywheel holder or band
strap wrench and remove the flywheel with the rotor pullerAlign the key way in the flywheel with the key on the crankshaft and install the flywheel