Clutch Disc/Plate/Spring Inspection; Clutch Disc/Plate Installation - Honda CRF450RX 2019 Owner's Manual & Competition Handbook

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Clutch System

Clutch Disc/Plate/Spring Inspection

• Replace the clutch discs (1) if they show signs of
scoring or discolouration.
Measure the thickness of each clutch disc.
Service Limit: 2.85 mm (0.112 in)
Replace the clutch discs and clutch plates as a
set.
(1)
(1) clutch discs
• Check the clutch plates (2) for excessive
warpage or discolouration.
Check the plate warpage on a surface plate using
a feeler gauge.
Service Limit: 0.15 mm (0.006 in)
Replace the clutch discs and plates as a set.
(2) clutch plates
80
Servicing Your Honda
• Check the clutch springs (3) for wear or damage.
Measure the free length of each clutch spring.
Service Limit: 48.70 mm (1.917 in)
Replace the clutch spring as a set.
(3)
(3) clutch springs
• If you feel the clutch slipping after replacing the
clutch disc and plate, replace the clutch springs.
(2)

Clutch Disc/Plate Installation

1. Install the spring seat (1) and judder spring (2)
onto the clutch centre as shown.
Coat the clutch discs with engine oil.
2. Install the clutch disc A (larger I.D. disc) (3)
onto the clutch outer.
Stack the six clutch plates (4) five clutch discs
B (5) alternately while aligning the lugs (6) of
the clutch centre with the groove (7) of the
clutch plates as shown.
Install the clutch disc C (8).
(6)
(5)
(8)
disc C
disc B
(1) spring seat
(5) clutch discs B
(2) judder spring
(6) lugs
(3) clutch disc A
(7) groove
(4) clutch plates
(8) clutch disc C
(7)
(4)
(3) (2) (1)
disc A

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Crf450r 2019

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