Removing The Throttle Body Assembly; Checking The Canister Check Valve - Yamaha F200B Service Manual

FUEL
Removing the throttle body
assembly
1. Disconnect the throttle body assembly
wiring harness extension coupler a and
ETV coupler b.
2. Remove the wiring harness 1.
1
3. Remove the vacuum hose 2 from the
holder 3, and then disconnect the vac-
uum hose 2.
4. Disconnect the vapor gas hoses 4 and
5.
5
5
4
6-23
Fuel system
a
b
2
3
2
5. Remove the plastic tie 6, and then
remove the joint 7.
6. Remove the throttle body assembly 8.
7
6
8
7. Remove the hoses and check valve 9.

Checking the canister check valve

1. Connect the special service tool 1 to the
canister check valve port.
2. Apply positive pressure and check that
air comes out of the opposite end of the
canister check valve. Replace the canis-
ter check valve if no air comes out.
9