Yamaha JT1 Series Service Manual page 18

ENGINE·
Engine Removal
3 Disconeect the fuel line at the bottom of the fuel
tank. Remove the tank mounting bolt (13) and
lift the fuel tank off.
4 Remove the connector from the magneto lead wire
and remove the plug cap,
5 Remove the muffler
a) Remove the exhaust pipe nut.
Use the special wrench. Hammering on the nut will
only damage it and/or the cylinder.
b)Remove the muffler holding bolts
(13 mm)
-12-
F,g 3-1-3
Fig 3-1-4
Fig 3-1-5
Fig 3-1-6