Yamaha XS650SE, Shop Manual

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G. Generator
1. Lock the crank rotation at the primary
drive gear.
2. Reverse the generator removal sequence.
H. Oil pump
Reverse the oil pump removal sequence.
I. Right-hand crankcase cover
While properly engaging oil pump gear, install
new case cover gasket and right-hand crank-
case cover. Tighten holding screws gradually
until proper torque is reached.
Crankcase cover holding screw torque:
1.0 m-kg (7 ft-lb)
J. Piston
1,
Position piston rings as shown.
NOTE:
1) Make sure ends of oil ring expanders
are not overlapped.
2) Manufacturer’s marks or numbers
stamped on the rings are on the top
side of the rings. Coat pistons and rings
well with oil.
1. T
O P
2. 2nd
3. Expander
4. spacer upper
5.
spacer lower
2. Install pistons on rods. The arrow on the
pistons must point to the front of the
engine.
NOTE:
Always install new piston pin clips.
K. Cylinder and cylinder head
1.
2.
3.
4.
L.
1.
2.
Install the tensioner cushion onto crank-
case.
Install a new cylinder base gasket.
Install cylinder using special tool.
Install the cylinder head gasket and
cylinder head.
NOTE:
The assembly of the cylinder head is the
reverse of the disassembly procedure.
Install valve springs with tighter windings
(smaller pitch) down,
Camshaft
Rotate the piston to TDC.
Install the, chain onto the camshaft with
no slack in the cam chain on the front
portion (opposite side from the tensioner).
1. Center
2. No clearance
3. Position the groove in the left side of the
cam sprocket so that it lines up with the
sprocket centers.
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