Primary Chain - Buell X1 2002 Service Manual

HOME

PRIMARY CHAIN

INSPECTION
Check primary chain tension:
At the 500 mile (800 km) service interval.
●
At every 5000 mile (8000 km) service interval thereafter.
●
See Figure 1-26. Measure primary chain tension through the
inspection cover (3) opening. Adjust primary chains not meet-
ing vertical free play specifications.
1. See Figure 1-26. Remove two screws (1) and O-rings
(2).
2. Remove inspection cover (3) and O-ring (4) from primary
cover (6).
3. See Figure 1-27. Check primary chain tension by mea-
suring vertical free play (4).
a. Measure vertical free play through inspection cover
opening (2).
b. Rotate engine to move primary chain to a different
position on sprockets (1, 3).
c. Measure vertical free play several times, each time
with primary chain moved so that the measurement
is taken with sprockets rotated to the tightest chain
position.
4. The tightest measurement taken in Step 3 must be within
the specifications listed in
as described under ADJUSTMENT.
NOTE
The initial primary chain vertical free play specification used
at the assembly plant is 1/4-3/8 in. (6.4-9.5 mm) with a cold
engine. The 1/4 in. (6.4 mm) minimum is only allowed at the
absolute tightest point in the drive, as measured with special-
ized factory equipment. If a chain has less than 1/4 in. (6.4
mm) vertical free play (with a cold engine), adjust free play to
the "field" specification of 3/8-1/2 in. (9.5-12.7 mm). The
looser specification will avoid overtightening, which might oth-
erwise occur during adjustment using "non-factory" equip-
ment and methods.
5. See Figure 1-26. Install O-ring (4).
6. Fasten inspection cover (3) to primary cover (6) using
two screws (1) with O-rings (2). Tighten to 40-60 in-lbs
(5-7 Nm).
ADJUSTMENT
NOTE
If vertical free play cannot be set within the limits specified,
then primary chain and/or chain adjuster are worn beyond
adjustment limits. Replace parts as necessary. See Section 6.
1. See Figure 1-28. Loosen locknut (1).
2. Turn adjusting screw (2):
a. Clockwise (inward) to reduce free play.
b. Counterclockwise (outward) to increase free play.
3. Tighten locknut (1) to 20-25 ft-lbs (27-34 Nm).
1-28
Table 1-7. If necessary, adjust
b0333x1x
2
4
3
1
1. Screw (2)
2. O-ring (2)
3. Inspection Cover
4. O-ring
5. Adjusting Screw and Locknut
6. Primary Cover
Figure 1-26. Primary Chain Inspection Cover
b0085a6x
1 2
1. Engine Sprocket
2. Inspection Cover Opening
3. Clutch Sprocket
4. Vertical Free Play
Figure 1-27. Measuring Primary Chain Tension
Table 1-7. Primary Chain Tension
ENGINE
TEMPERATURE
Cold
Hot (normal running
temperature)
8232
Locknut
Adjusting Screw
Figure 1-28. Measuring Primary Chain Adjustment
1.13
6
5
3
4
FREE PLAY
3/8-1/2 in. 9.5-12.7 mm
1/4-3/8 in. 6.4-9.5 mm
2002 Buell X1: Maintenance