MAINTENANCE
215 MM157 (6--88)
3-16
ELECTRICAL SYSTEM
SPARK PLUG
Spark plug gaps are best checked with a wire
gauge unless the points are dressed to obtain a
correct reading with a flat gauge. The adjustment
should always be made on the side electrode and
never on the center electrode, which may cause
the porcelain to be broken.
“Gapping” the electrode tip is more easily done
with the proper tools.
B
A
C
D
01471
GAPPING THE SPARK PLUG
A. Spark Plug
B. Gapping Tool
C. Side Electrode
D. Center Electrode
Clean or replace and gap the spark plug after
every 100 hours of operation.
The proper spark plug gap is 0.016 to 0.020 in
(0.41 to 0.51 mm) for LPG engines, 0.023 to
0.028 in (0.58 to 0.71 mm) for gasoline engines.
IGNITION SYSTEM
The engine ignition system is the breakerless
type. The ignition system needs no regular
maintenance. The magnet-to-ignition module gap
is 0.012 to 0.016 in (0.3 to 0.4 mm). When
adjusting, tighten module screws to 32 in lb (3.5
Nm).
STARTER
The starter motor brushes must be inspected after
every 400 hours of operation.
CYLINDER HEAD
The cylinder head may develop carbon deposits.
After every 400 hours of operation, remove the
cylinder head and clean it of any accumulated
deposits. Replace the cylinder head, making sure
the cylinder head screws are lubricated with
graphite grease and are returned to the same
hole. Alternately snug the screws; tighten them to
one-half of the specified value, then torque the
screws to 15 to 20 ft lb (20 to 25 Nm).
03076
CYLINDER HEAD SCREW TIGHTENING
SEQUENCE
VALVE TAPPET CLEARANCE
The valve tappet clearance requires no regularly
scheduled adjustment. The intake valve clearance
should be 0.006 to 0.008 in (0.15 to 0.20 mm)
cold. The exhaust valve clearance should be
0.017 to 0.019 in (0.43 to 0.48 mm) cold. Grind off
the end of the valve stem to obtain the proper
clearance.
PCV SYSTEM
The PCV system including the reed valve and
gaskets must be inspected after every 400 hours
of operation.
TUNE-UP CHART
Maximum governed
speed:
2350rpm
Spark plug gap:
gasoline
0.023 to 0.028 in (.6 to
.7 mm)
LPG
0.016 to 0.020 in
(.4 to .5 mm)
Valve clearances,
cold: in-
take
0.006 to 0.008 in
(0.15 to 0.20mm)
exhaust
0.017 to 0.019 in
(0.43 to 0.48mm)
Summary of Contents for 215
Page 1: ...215 MM157 Operator and Parts Manual Operator Manual ...
Page 6: ...SPECIFICATIONS 215 MM157 6 88 1 2 ...
Page 10: ...OPERATION 215 MM157 6 88 2 2 ...
Page 26: ...MAINTENANCE 215 MM157 6 88 3 2 ...
Page 33: ...MAINTENANCE 3 9 215 MM157 6 88 03078 HYDRAULIC SCHEMATIC ...
Page 42: ...MAINTENANCE 215 MM157 6 88 3 18 03077 ELECTRICAL SCHEMATIC ...
Page 64: ...MAINTENANCE 215 MM157 6 88 3 40 ...
Page 66: ...APPENDIX 215 MM157 6 88 4 2 ...
