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• Damage to the fuel tank may cause
fire or explosion. Do not
drill holes
in the WELDMARK 225 base or weld
to the WELDMARK 225 base.
A-5
INSTALLATION
WELDMARK 225
A-5
Angle of Operation
Internal combustion engines are designed to run in a
level condition which is where the optimum perfor-
mance is achieved. The maximum angle of operation
for the engine is 15 degrees from horizontal in any
direction. If the engine is to be operated at an angle,
provisions must be made for checking and maintain-
ing the oil at the normal (FULL) oil capacity in the
crankcase in a level condition.
When operating at an angle, the effective fuel capaci-
ty will be slightly less than the specified 10 gallons.
High Altitude Operation
If the Weldmark 225 will be consistently operated at
altitudes above 5000 ft, a carburetor jet designed for
high altitudes should be installed. This will result in
better fuel economy, cleaner exhaust, and longer
spark plug life. It will not
give increased power which
is decreased at higher altitudes. Engine horsepower
is reduced by 3.5% per 1000 feet for altitudes above
377 feet.
Do not operate a Weldmark 225 with a high alti-
tude jet installed at altitudes below 5000 ft. This
will result in the engine running too lean and
result in higher engine operating temperatures
which can shorten engine life.
High altitude jet kits are available from the engine
manufacturer. For the Kohler model order kit part no.
2475501.
Muffler Relocation Shut off welder and allow
muffler to cool before touching muffler.
The Weldmark 225 is shipped with the exhaust com-
ing out on the left side. The exhaust can be changed
to the opposite side by removing the two screws that
hold the exhaust port cover in place and installing the
cover on the opposite side. (Operating the Weldmark
225 without the cover in place will result in a higher
noise level and no increase in machine output.)
Location / Ventilation
The welder should be located to provide an unrestrict-
ed flow of clean, cool air to the cooling air inlets and to
avoid heated air coming out of the welder recirculating
back to the cooling air inlet. Also, locate the welder so
that engine exhaust fumes are properly vented to an
outside area.
Connection of Wire Feeders
Shut off welder before making any electrical
connections.
Wire Feed (Constant voltage)
Connection of the LN-25 to the Weldmark 225
• Shut the welder off.
•
Connect the electrode cable from the LN-25 to the
“ELECTRODE” terminal of the welder. Connect
the work cable to the “TO WORK” terminal of the
welder.
• Position the welder “Polarity” switch to the desired
polarity, either DC (-) or DC (+).
• Position the “RANGE” switch to the “WIRE FEED”
position.
• Attach the single lead from the LN-25 control box
to the work using the spring clip on the end of the
lead - it carries no welding current.
• Place the idler switch in the “AUTO” position.
• Adjust wire feed speed at the LN-25 and adjust
the welding voltage with the output “CONTROL”
at the welder.
NOTE: The welding electrode is energized at all
times, unless an LN-25 with built-in contactor is used.
If the output “CONTROL” is set below “3”, the LN-25
contactor may not pull in.
CAUTION
WARNING
WARNING
WARNING