Chapter 4: The Fuel System and Governor
36
4. Apply a vacuum to the roll over valve.
See Figure 4.18.
NOTE: The roll over valve should hold 15 in.Hg.
for 15 seconds.
5. With the vacuum still applied, turn the roll over
valve over. See Figure 4.19.
NOTE: The vacuum should be relieved.
6. If the results do not match what is listed above,
replace the roll over valve.
Charcoal canister
To remove/replace the charcoal canister:
1. Remove the fuel tank by following the steps
described in the Charcoal canister fuel tank sec-
tion of this chapter.
2. Remove the vacuum line that runs from the roll
over valve to the charcoal canister.
See Figure 4.20.
3. Unsnap the charcoal canister from the fuel tank.
4. Install the charcoal canister by following the
above steps in reverse order.
Figure 4.18
15 in.Hg.
Figure 4.19
Zero reading
Figure 4.20
Charcoal canister
Remove the vacuum lines
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