period of about 10 minutes will be required before the
cartridge every oil change.
Be sure that your
switch has cooled off sufficiently to re-start the engine.
replacement is a Wisconsin Micro-Fine filter.
An overheated engine will score the cylinder walls, burn
6. Do not allow shrouding to become damaged or
out connecting rod and crankshaft bearings, also warp
badly dented as this will retard air flow.
pistons and valves. The cause of the overheating
Never operate engine with air shrouding
condition will have to be remedied before the engine is
removed. This will retard air cooling.
See Engine Overheats paragraph in
Troubles, Causes and Remedies section Service Kit is
Always keep all parts of the engine clean.
available see parts list section.
This will prolong engine life, and give more
KEEPING ENGINE CLEAN
Every 4 to 8 hours, depending on dust conditions,
check air cleaner and change oil. See Page 14-1.
This engine is cooled by blasts of air which must be
allowed to circulate all around the cylinders and cylinder
Every 8 hours check crankcase oil level. Keep filled to
heads to properly cool the engine and thereby keep it in
full mark on oil gauge sabre, but no more.
good running condition. If dust, dirt or chaff is
Every 50 hours drain crankcase and refill with fresh oil.
allowed to collect in the cylinder shrouding or in the
TROUBLES CAUSES AND REMEDIES
V between the cylinders, it will retard the flow of air
and cause the engine to overheat. Keep flywheel
Three prime requisites are essential to starting and
screen and rotating screen clean, so as not to restrict
maintaining satisfactory operation of gasoline engines.
the intake of cooling air.
1. A proper fuel mixture in the cylinder.
1. Remove covers frequently and clean out all
2. Good compression in the cylinder.
dust, dirt and chaff. Be sure to replace covers.
3. Good spark, properly timed, to ignite the mixture.
If all three of these conditions do not exist, the engine
cannot be started. There are other factors which will
contribute to hard starting; such as, too heavy a load for
the engine to turn over at a low starting speed, a long
exhaust pipe with high back pressure, etc. These
conditions may affect the starting, but do not necessarily
mean that the engine is improperly adjusted.
As a guide to locating any difficulties which might arise,
the following causes are listed under the three headings:
Fuel Mixture, Compression, and Ignition.
In each case, the causes of trouble are given in the
order in which they are most apt to occur. In many
cases the remedy is apparent, and in such cases no
further remedies are suggested.
No fuel in tank or fuel shut-off valve closed.
Open these covers frequently and clean out all
Fuel pump diaphragm worn out, so pump does not
dust and chaff. Be sure to close covers.
supply carburetor with fuel.
Keep this space between cylinders free of dust
Carburetor not choked sufficiently, especially if engine is
Read instructions on this air cleaner regarding
its care. This is important. The entire air
cleaner should be removed from the engine at
Water, dirt, or gum in gasoline interfering with free flow
least once a year, and washed in a cleaning
of fuel to carburetor.
fluid to clean out dirt gathered in the back fire
trap in the top part of the air cleaner.
Replace the oil filter cartridge every other oil
change. If operating conditions are extremely
dusty replace TM 5-3895-359-14&P