Buell 2002 X1, Service Manual

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2002 Buell X1: Engine 3-27
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NOTE
The same piston may be used if cylinder bore was not
changed, unless it is scuffed or grooved. However, replace
rings and hone the cylinder walls with a No. 240 grit flexible
hone to facilitate ring seating.
2. See Figure 3-37. Apply engine oil to piston grooves. Use
TRANSMISSION SHAFT RETAINING RING PLIERS
(Part No. J-5586) to slip compression rings over piston
into their respective grooves. Be extremely careful not to
over expand, twist rings or damage piston surface when
installing rings.
NOTE
Install second compression ring with dot towards top.
3. See Figure 3-38. Install rings so end gaps of adjacent
rings are a minimum of 90° apart. Ring gaps are not to
be within 10° of the thrust face centerline.
4. See Figure 3-39. Check for proper side clearance with
thickness gauge, as shown. See 3.1 SPECIFICATIONS
for tolerance.
NOTE
If the ring grooves are clean and the side play is still not cor-
rect, replace the rings, the piston or both.
Figure 3-37. Installing Piston Rings
Figure 3-38. Ring End Gap Position
Figure 3-39. Measuring Ring Clearance in Groove
6613
Transmission Shaft Retaining
Ring Pliers (Part No. J-5586)
Position ring end gaps at arrows–
minimum of 90° apart
FRONT
Piston
pin
REAR
b0095x3x
6614