John Deere 318 - Manual (Page 276)

J
ENGINE SMOKES EXCESSIVELY AND USES TOO MUCH OIL
• Test crankcase vacuum: GO TO 1Ô
• Inspect crankcase breather: See Engine CTM2.
• Test compression pressure: GO TO 1@
• Check valve stem seals (if equipped): See Engine CTM2.
• Check for correct engine oil dipstick being used.
• Check for proper installation of oil passage plug: See Engine CTM2.
K
ENGINE SMOKES EXCESSIVELY AND USES TOO MUCH FUEL
• Adjust choke cable: GO TO Å
• Adjust carburetor: GO TO Ö
• Check carburetor float adjustment: See Engine CTM2.
‘
IGNITION SPARK
TEST
M37088 -UN-29AUG88
Connect spark plug wire to JDM-74-5 Ignition
Test Plug or D-05351ST Spark Tester.
Crank engine and watch for spark.
LOOK: Ignition Test Plug or Tester must spark.
SPARK “BLUE” HOT:
OK, Continue with test.
NO SPARK OR
“YELLOW” WEAK
SPARK: GO TO
SECTION 240.
M37430 -UN-25JAN90
Remove spark plug.
Inspect spark plug for wet or fouled condition or
damage.
Check spark plug gap. Spark plug gap should be
0.64 mm (0.025 in.)
Repeat spark test with original plug.
NO SPARK: Replace
plug.
Æ
THROTTLE CABLE
ADJUSTMENT
M55061 -UN-09DEC89
Move throttle lever to
fast idle position.
M37408 -UN-25JAN90
Loosen clamp.
Hold throttle control
lever against fast idle
stop (A). Tighten clamp.
MX,159022010,12-19-05MAY95
MX,159022010,13-19-05MAY95
MX,159022010,14-19-05MAY95
MX,159022010,15-19-03MAY95
Diagnosis, Tests and Adjustments/Throttle Cable Adjustment
TM1590 (17MAY95)
220-10-6
316, 318 & 420 Lawn and Garden Tractors
020895
220
10
6