User Manual - Page 84

For 2019 CRF450X.

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Clutch System
78 Servicing Your Honda
Replace the clutch discs (1) if they show signs of
scoring or discoloration.
Measure the thickness of each clutch disc.
Service Limit: 0.112 in (2.85 mm)
Replace the clutch discs and clutch plates as a
set.
Check the clutch plates (2) for excessive
warpage or discoloration.
Check the plate warpage on a surface plate using
a feeler gauge.
Service Limit: 0.006 in (0.15 mm)
Replace the clutch discs and plates as a set.
Check the clutch springs (3) for wear or damage.
Measure the thickness of each clutch spring.
Service Limit: 1.79 in (45.5 mm)
Replace the clutch spring as a set.
If you feel the clutch slippage when replacing the
clutch discs and plates, replace the clutch
springs.
1. Install the spring seat (1) and judder spring (2)
onto the clutch center 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) alt
ernately while ali
gning the lugs (6) of the
clutch center with the groove (7) of the clutch
plates as shown.
Install the clutch disc C (8) by aligning its tabs (9)
with the shallow slots (10) of the clutch outer.
Clutch Disc/Plate/Spring Inspection
(1) clutch discs
(2) clutch plates
(1)
(2)
(3) clutch springs
(3)
Clutch Disc/Plate Installation
(1) spring seat (6) lugs
(2) judder spring (7) groove
(3) clutch disc A (8) clutch disc C
(4) clutch plates (9) tabs
(5) clutch discs B (10) shallow slots
(8)
disc C disc B disc A
(5)
(6)
(7)
(3)
(2)
(1)
(4)
(10)
(9)
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