Yamaha XS650SE, Shop Manual

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1 . Release the stopper spring
( 6 ) . 4.
Remove the neutral detent unit (15-18).
2. Remove the bolts (1) and stopper plate(3). 5.
Removecotter pins (13). and pin (12)
3. Pull the guide bar (14) out.
6.
Pull out the shift cam
(7).
N. Crankshaft removal
1. Tap the crankshaft with a rubber hammer
to loosen
it,
then l i f t
it
out.
2. Crankshaft illustration
1 . Crank
1(L)
14. Cam chain sprocket
2. Crank 2(R) 1 5 . Journal bearing 2
3 . Crank
2(L)
16. Circlip
4 . Crank 2 ( R ) 17. Primary drive gear
5. Woodruff key
6 . Connecting rod 19. Drive gear
7. Big
end
bearing
20.
Dowel pin
8.
Crank pin washer 21. Oil seal
9,
10
Crank pin
18. Plate washer
22.
Spring washer
1 1 .
Crankshim 23.
Nut
12. Journal bearing 1 24.
Key
25. Dowel pin
3
3-3.
INSPECTION AND REPAIR
A.Cylinder head cover
Place head cover
on
a surface plate. There
should be no warpage. Correct by re-surfacing
as follows:
Place
#400
or #600 grit wet sandpaper on
surface plate and re-surface head cover using
a figure-eight sanding pattern. Rotate head
cover several times t o avoid removing too
much material from
one
side.
B. Cylinder head
1.
Remove spark plugs.
2.
Remove valves.
3.
Using a rounded scraper, remove carbon
deposits from combustion chamber. Take
care t o avoid damaging spark plug threads
and valve seats.
Do
not use a sharp
instrument. Avoid scratching the alumi-
num.
4. Place
on
a surface plate. There should be
no warpage. Correct b y re-surfacing as
follows:
Place #400 or
#600
grit wet sandpaper
on
surface plate and re-surface head using
a figure-eight sanding pattern. Rotate
head several times t o avoid removing too
much material from one side.
2 2