Hobart 60PL20 Operation And Maintenance Manual page 86

OM-2053
TROUBLE, SYMPTOM
AND CONDITION
ENGINE AND CONTROLS (CONTINUED)
3. Engine will not
start. Cranking
speed normal.
3-1
Page 8
PROBABLE CAUSE
A. No fuel
(1) Insufficient fuel
in tank
(2) Fuel shut-off
valve closed
(3) Loose connections
damaged hoses or fuel
lines between tank and
fuel pump
(4) Plugged or defective
fuel filter
(5) Faulty installation
(6) Faulty fuel pump
(a) Relief valve not
seating
(b) Worn pump gears
or damaged pump
drive
TEST, CHECK, AND/OR
REMEDY
A. Before attempting to find
the cause of "no fuel",
prime the fuel filters by
removing pipe plug in the
cover of each. Fill each
filter with fuel oil. If the
engine will not start after
priming, mechanical pump
trouble is indicated. If the
engine starts and then stops
after a short time, trouble
between the fuel source and
the suction side of the pump
is indicated. Check and/or
remedy as follows.
(1) Fill tank.
(2) Make certain valve is
OPEN.
(3) Tighten all fittings and
connections. Replace any
damaged hoses or fuel
links.
(4) Do not overlook the
possibility of restricted
flow through the fuel
filters. Also check gaskets
for leaking or damaged
condition.
(5) Restricted fitting missing
from return line.
(6) Check pump.
(a) An open relief valve will
cause low output pressure.
(b) Check pump for normal
operation. Replace if defective.
December 31/91 Revised