- 59 -
To Eliminate Air from the Fuel System
The fuel injection pump has a self-vent feature (A1).
Vent screws are not fitted to these pumps. No connec-
tions or plugs need be released to eliminate air from
fuel system.
Note:
•
If the fuel injection pump is empty or if the canister
of the fuel filter has been renewed, it will be neces-
sary to eliminate air from the fuel system, espe-
cially the injection pump.
1. Ensure that fuel has been added to the tank or that
the leakage has been corrected.
2. Operate the starter motor until the engine starts.
623O902A
(1) Fuel pipe
(2) Air bleeding bolt
Checking Fuel Pipe
•
Stop the engine when checking and
changing the fuel pipe.
•
R e m e m b e r t o c h e c k t h e f u e l p i p e
periodically.The fuel pipe is subject to
wear and aging, fuel may leak out onto
the running engine, which could cause
a fire.
WARNING
Although checking the fuel pipe connection is recom-
mended every 100 service hours, it should be done
every 6 months if operation does not exceed 100 hours
in 6 months.
1. If the hose clamp is loose, apply a light coat of lu-
bricant onto the threads and securely tighten it.
2. The fuel pipe is made of rubber and ages regard-
less of period of service. Change the fuel pipe to-
gether with the hose clamps every two years and
tighten securely.
3. However, if the fuel pipe and hose clamp are found
damaged or deteriorated earlier than two years,
then change them right away.
4. After the fuel pipe and hose clamp have been
changed, bleed the fuel system.
