PS Magazine - TB 43-PS-562
PS, The Preventative Maintenance Monthly
ISSUE 562
SEPTEMBER 1999
roubleshooting your M17 decon
can be trouble-free if you remember
a few quick checks:
If the engine won’t start or runs
rough, suspect the spark plug. It’s prob-
ably fouled with carbon, which is
caused by using the wrong fuel-oil
mixture.
Clean the plug with the wire brush
and abrasive cloth in your tool kit. Then
gap it .020 to .035 inch for the JLO
engine (silver fan guard) and .035 to
.040 for the Cuyuna engine (black fan
guard) with the gap gauge.
M17-Series Decon . . .
It’s a good idea to check for the string
before you fill the blivet. If the string’s
left inside the blivet, you have no way
to open the flap—except climbing in-
side. That’s not too much fun when it’s
cold.
If you open the drain valve for the
1,580-gal blivet and nothing comes out,
pull the string for the flap that covers
the valves inside the blivet. That should
start the water flowing. The 3,000-gal
blivet doesn’t have the flaps.
Remember, the
JLO engines
take
one
quart
of oil per five gallons of
MOGAS. The
Cuyuna engines
take
one
pint
of oil per five gallons of
MOGAS.
If the heater won’t ignite, it’s prob-
ably the heater spark plug or the mica
window behind the photo cell. Clean
compartment’s lid, the lines have
trouble routing fuel. Reposition the
lines. Also check the heater fuel filter
for dirt and leaks. Drain out any dirt.
Get a leaking filter replaced.
Check lines for crimping
the plug with the wire brush and abra-
sive cloth. As long as its insulator isn’t
cracked, you’re back in business. Get
a cracked spark plug replaced. Wipe
off the window with a clean cloth.
Starting problems are also caused by
water-contaminated fuel. So, test the
fuel for water, with water indicator
paste, NSN 6850-00-001-4194, before
you pour it in the M17.
If you can’t build up fuel pressure
for the heater, check the fuel lines
where they come out of the fuel line
compartment. If they’re crimped by the
PS 562
47
SEP 99
i can't
figure out why
this m17
won't
start
.
sorry,
pal. i'm just
not up
to
it
.
maybe i
can take the
trouble
out
of your
troubleshooting
.
✱
✱
✱
Clean and gap spark plug
Pull blivet
valve cover line
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