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Adjustments for Competition 143
Front Suspension Adjustments
1. Remove the front suspension (page 100).
2. Disassemble the fork outer tube (page 102).
3. Disassemble the fork damper (page 107).
Fork Oil Capacity:
(CRF450RX)
Standard 27.4 Ibf/in (4.8 N/mm) Fork Spring
(CRF450R)
Standard 28.6 Ibf/in (5.0 N/mm) Fork Spring
Example: Front fork characteristics when a
standard spring
(CRF450RX)
(CRF450R)
(CRF450RX)
Optional Soft 26.3 Ibf/in (4.6 N/mm) Fork Spring
(CRF450R)
Optional Soft 27.4 Ibf/in (4.8 N/mm) Fork Spring
(CRF450RX)
Optional Stiff 28.6 Ibf/in (5.0 N/mm) Fork Spring
(CRF450R)
Optional Stiff 29.7 Ibf/in (5.2 N/mm) Fork Spring
4. Assemble the fork damper (page 112).
5. Refilling the fork oil (page 103).
6. Install the front suspension (page 104).
Fork Oil Adjustment
Standard
oil capacity
CRF450RX
11.9 US oz
(351 cm
3
)
CRF450R
11.8 US oz
(349 cm
3
)
Maximum
oil capacity
CRF450RX
13.1 US oz
(387 cm
3
)
Slightly stiffer
as it nears full
compression.
CRF450R
Minimum
oil capacity
CRF450RX
10.2 US oz
(302 cm
3
)
Slightly softer
as it nears full
compression.
CRF450R
No mark
(factory products)
2 scribe marks
(factory products)
Force (N)
Stroke (mm)
Oil capacity 13.1 US oz (387 cm
3
)
(MAX)
Oil capacity 11.9 US oz (351 cm
3
)
(STANDARD)
Oil capacity 10.2 US oz (302 cm
3
)
(MIN)
Standard
oil capacity
CRF450RX
12.0 US oz
(356 cm
3
)
CRF450R
12.0 US oz
(355 cm
3
)
Maximum
oil capacity
CRF450RX
13.3 US oz
(392 cm
3
)
Slightly stiffer
as it nears full
compression.
CRF450R
13.3 US oz
(393 cm
3
)
Minimum
oil capacity
CRF450RX
10.4 US oz
(307 cm
3
)
Slightly softer
as it nears full
compression.
CRF450R
10.4 US oz
(308 cm
3
)
Force (N)
Stroke (mm)
Oil capacity 13.1 US oz (387 cm
3
)
(MAX)
Oil capacity 11.8 US oz (349 cm
3
)
(STANDARD)
Oil capacity 10.2 US oz (302 cm
3
)
(MIN)
1 scribe mark
No mark
Standard
oil capacity
CRF450RX
11.7 US oz
(345 cm
3
)
CRF450R
11.9 US oz
(351 cm
3
)
Maximum
oil capacity
CRF450RX
12.9 US oz
(381 cm
3
)
Slightly stiffer
as it nears full
compression.
CRF450R
13.2 US oz
(389 cm
3
)
Minimum
oil capacity
CRF450RX
10.0 US oz
(296 cm
3
)
Slightly softer
as it nears full
compression.
CRF450R
10.3 US oz
(304 cm
3
)
2 scribe marks
3 scribe marks
31MKE610_RX.book 143 ページ ２０１７年４月１４日 金曜日 午後２時３７分
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