Honda CRF450R Owner's Manual page 52

Installation
1. Install a new fuel pump filter (1) onto the fuel
pump assembly (2) aligning its hook (3) with
the joint boss (4) completely.
Be careful not to damage the hook.
(2)
(3)
(4)
(1)
(1) fuel pump filter (new) (3) hook
(2) fuel pump assembly (4) joint boss
2. Apply small amount of engine oil to a new
O-ring (5).
Install a new O-ring to the fuel pump assembly
(6).
3. Install the fuel pump assembly with fuel pump
filter into the fuel pump unit holder (7) while
routing the fuel pump red (8) and black (9)
wires through the holder grooves (10) as
shown.
(8)
(10)
(10)
(10)
(6)
(7) (9) (5)
(5) O-ring (new) (8) red wire
(6) fuel pump assembly (9) black wire
(7) fuel pump unit holder (10) grooves
4. Install a new damper rubber (11) to the fuel
pump filter as shown.
Install fuel pump stopper (12).
(12)
(11)
(11) damper rubber (new) (12) fuel pump stopper
Fuel System
5. Apply small amount of engine oil to a new
O-ring (13).
Install a new O-ring to the fuel pump base (14).
6. Install the fuel pump unit holder assembly (15)
into the fuel pump base while aligning its
hooks (16) with the grooves (17) in the fuel
pump base tabs (18).
If the gap between the hooks and tabs is more
than 0.04 in (1.0 mm), replace the fuel pump
unit.
(8)
Be sure that the hooks are completely seated.
(16)
(9)
(17) (18)
(13)
(13) O-ring (new)
(14) fuel pump base
(15) fuel pump unit holder assembly
(16) hooks
(17) grooves
(18) tabs
Servicing Your Honda
(15)
(17) (18)
(14)
(cont'd)
45