18
PERIODIC MAINTENANCE
GASOLINE ENGINES:
AIR CLEANER
The rammer uses a dry type air cleaner element. Clean
the element by removing it and tapping it lightly on a flat
surface. Keep tapping until no dust comes off. The
element should be replaced if dust does not drop off
easily or if element becomes damaged.
NOTE: Do not wash the element in any liquid or blow
dust off with compressed air. Do not tap element on a
sharp corner, it may damage the seal.
SPARK PLUG
Remove and check the spark plug regularly. Clean or
replace if necessary. Set the spark plug gap according
to the tuneĆup specifications section. Reinstall the plug
and torque to 15Ć20 ft. lbs. (21Ć28 NDm).
MEASURE GAP
WITH FEELER
GAUGE
ENGINE LUBRICATION: Robin EC10
1. The 2Ćcycle engine is lubricated by the oilĆgasoline
mixture. Use a 20:1 gas to oil mixture for a breakĆin
period of 8 hours. After breakĆin, use a 50:1 gas to
oil mixture. For a 50:1 mixture, mix 3/4 pint (12
ounces, 355 ml) of 2-cycle motor oil with 5 gallons
(19L) of lead-free gasoline.
2. The Robin 2Ćcycle engine also has oil in a separate
governor crankcase.
a. Remove the governor chamber dipstick which
is behind the muffler.
b. The oil level should be at the upper level which
is 0.31 in. (8mm) up from the bottom of the dipĆ
stick.
c. If oil is needed, add a good grade of Service
SF" SAE 10W-30 Motor Oil.
d. Also see the Robin Operating Instructions
and Parts List".
ENGINE LUBRICATION: Robin EC12
oil injected
1. The EC12 twoĆcycle engine is lubricated by the
twoĆcycle oil from a separate oil tank. Use a 32:1
gas to oil mixture for a breakĆin period of 8 hours.
After breakĆin, use only unleaded gasoline in the
fuel tank provided the engine is consuming oil from
the oil tank.
2. The oil tank is equipped with a filtering screen built
into the elbow on the bottom of the tank. This
should be replaced once a year or 300 hours,
whichever comes first. At this time, drain oil in tank
and test oil sensor. To do this, use a spark tester
and pull on the starter rope. If you get a spark, the
oil sensor is no good, replace.
MUFFLER
Check and clean the muffler exhaust hole regularly but
do not enlarge it.
NOTE: If the muffler exhaust hole is enlarged or holes
are drilled into the muffler the warranty is voided.
TUNEĆUP SPECIFICATIONS FOR
ROBIN EC10
1. Spark Plug Gap
Robin NGK BĆ4HS-0.024-0.028in
(0.6-0.7mm)
Champion UJ12-0.024-0.028in (0.6-0.7
mm)
2. Ignition Coil Air Gap
Robin engine points: 0.012-0.020in
(0.3-0.5mm)
3. Carburetor
Low speed adjusting screw, approximately one
turn counterclockwise.
TUNEĆUP SPECIFICATIONS FOR
ROBIN EC12
1. Spark Plug Gap
Robin NGK BM6A-0.024-0.028in.
(0.6-0.7mm)
Champion CJ8-0.024-0.028in. (0.6-0.7mm)
2. Ignition Coil Air Gap
Robin engine points: 0.012-0.020in (0.3-0.5
mm)
3. Carburetor
Low speed adjusting screw, approximately one
turn counterclockwise.
TORQUE SPECIFICATIONS
SPARK PLUG 15-20 ft lbs (21-28 NDm)
FLYWHEEL 35 ft lbs (49 NDm)
OIL DRAIN PLUG 10 ft lbs (14 NDm)
OIL FILLER PLUG 10 ft lbs (14 NDm)
