CYLI N D E R/PI STO N
CYLI N DER
R E M OVAL
NOTE
To service the rear cylinder/piston , first remove the engine
•
and then proceed with the common removal steps below.
Remove the following :
- cylinder head cover (page
- cylinder head (page 9-8)
- gaskets, dowel pins, and cam chain guides.
Disconnect the water hose from the coolant connector.
Remove the clip and slide the cylinder joint collar toward
eigther the front or rear cylinder.
Remove the cylinder to be serviced .
Remove the cylinder gasket and dowel pins from the crank
case .
I N S PE CT I O N
Clean the top o f each cylinder thoroughly.
I nspect the cylinder walls for scratches and wear .
Measure and record t h e cylinder I . D . a t three levels in both an
X and Y axis . Take the maximum reading to determine the cyl
inder wear.
SERVICE LIMIT: 7 5 . 1 0 mm ( 2 . 9 5 7 in)
Calculate the piston-to-cylinder clearance . Take the maximum
reading to determine the clearance.
SERVICE LIMIT: 0. 1 0 mm (0.004 in)
Calculate the cylinder for taper at three levels i n an X and Y
axis. Take the maximum reading to determine the taper.
SERVICE LIMIT: 0.06 mm (0.002 in)
Calculate the cylinder for out-of-round at three levels in an X
and Y axis . Take the maximum reading to determine the out
of-roun d .
SERVICE LIMIT: 0.06 mm (0.002 in)
The cylinder must be rebored and an oversize piston fitted if
the service limits are exceeded.
The following oversize piston are available:
0.25 mm (0.01 0 in) and 0 . 50 mm (0. 020 in)
The cylinder must be rebored so that the clearance to a n over
size piston is 0. 0 1 0 - 0.050 mm (0. 0004 - 0 . 0020 in) .
1 0- 2
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