Trouble-Shooting Chart - Hobart Pipeliner Instructions Manual

T-964C
PART THREE - MAINTENANCE INSTRUCTIONS
SECTION 12 - TROUBLE-SHOOTING CHART
TROUBLE PROBABLE CAUSE REMEDY
41. ENGINE
ENGINE WILL NOT START
Low cranking speed
IRREGULAR OPERATION
Missing cylinder
Runs ragged and cool
Back-fires and runs hot
Oil too heavy
Battery power low
Starter power low
Engine resistance high
Flooded (when cold)
Vapor lock (when hot)
Water in fuel
No ignition
Exhaust clogged
Fouled spark plug, shorted
ignition harness
Burned or sticking valve
Blown head gasket
Mixture too rich
Air leak in intake
Mixture too lean
Warm or use light oil
Tighten connections; re­
charge or replace with
fully charged battery
Tighten connections; replace
starter cables, brushes, or
starter
If over-heated, allow to
cool, test with hand crank.
Overhaul if internally jam­
med.
Replace starter.
Check 3-way valve, fuel
level, and lines
Allow 5 min. for drainage,
crank 10 revolutions with
choke wide open, then re­
set choke.
Allow unit to cool, loosen
line at carburetor and turn
engine over, with ignition
off, to prime fuel pump.
Clean strainer, drain fuel
tank, carburetor.
Check switch; tighten con­
nections or replace defec­
tive wire, magneto, or dis­
tributor
Use choke; check for fuel
leakage
Clear obstruction or replace
as required.
Clean or replace plug, re­
place defective cable
Replace valves where neces­
sary grind valves, replace
springs as required
Replace gasket
Clean or replace air cleaner
or carburetor
Tighten or replace defective
gasket or part
Clean or replace carburetor,
fuel lines, strainer
Starter runs but does not Broken drive
crank
Engine does not catch No fuel
Engine splutters and stops Mixture too lean
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