Two Brothers Racing Honda XR50R - Manual (Page 4)

Reinstall the knock pins
Lightly coat the cylinder wall with CLEAN
motor oil
Install the cylinder onto the studs (BE CARE-
FUL NOT TO DAMAGE
PISTON/RINGS/CYLINDER DURING
INSTALLATION)
Pull the cam chain through the cylinder
Finish installing the cylinder flush onto the
crankcase
Install the cam chain roller into the cylinder
Loosely install the cam chain roller bolt
Loosely install the cylinder side bolt
3. Remove tappet nut/bolt (x2 from end of the
rocker arm) from the cylinder head
Install one of the cam sprocket bolts into the
end of the cam shaft and use it to pull out the
stock cam shaft
Install the new cam shaft
Reinstall tappet nut/bolt (x2 from end of the
rocker arm) back into the rocker arms
4. Install x2 knock pins into the top of the cylin-
der
Install cylinder head gasket (BE SURE TO
USE CONTACT CLEANER ON THE GASKET
MOUNT AREA ON THE CYLINDER TO
ENSURE A GOOD SEAL) onto the cylinder
Install one of the black rubber seals (included
in the Takegawa gasket kit bag) into the
recessed hole on the cylinder. Install the
green rubber seal over the stud (ref: picture
for proper location)
XR50R 88cc Engine Build Instructions.qxd PAGE 4