John Deere 318 - Manual (Page 274)

E
ENGINE DOES NOT DEVELOP FULL POWER
• Adjust throttle cable: GO TO Æ
• Adjust choke cable: GO TO Å
• Adjust governor linkage: GO TO Ò
• Adjust carburetor: GO TO Ö
• Test spark plugs: GO TO ‘
• Check muffler for restriction or plugged condition.
• Test fuel filter: GO TO Ú
• Test fuel transfer pump: GO TO Ü
• Adjust timing—B43E (316), B43G (318) and B48G (420): GO TO 1!
• Check ignition system: See Section 240.
• Test compression pressure: GO TO 1@
• Test crankcase vacuum: GO TO 1Ô
• Inspect crankcase breather: See Engine CTM2.
• Check and adjust valve clearance: See Engine CTM2.
F
ENGINE RUNS ERRATICALLY
• Check for loose electrical connections: See Section 240.
• Test spark plugs: GO TO ‘
• Adjust carburetor: GO TO Ö
• Adjust dashpot—B43E (316), B43G (318) and B48G (420): GO TO Õ
• Adjust governor linkage: GO TO Ò
• Adjust timing—B43E (316), B43G (318) and B48G (420): GO TO 1!
• Test fuel filter: GO TO Ú
• Test fuel transfer pump: GO TO Ü
• Check ignition system: See Section 240.
• Test crankcase vacuum: GO TO 1Ô
• Inspect crankcase breather: See engine CTM2.
• Check and adjust valve clearance: See Engine CTM2.
• Check carburetor for plugged passages: See Engine CTM2.
MX,159022010,7 -19-05MAY95
MX,159022010,8 -19-08MAY95
Diagnosis, Tests and Adjustments/Troubleshooting Guide
TM1590 (17MAY95)
220-10-4
316, 318 & 420 Lawn and Garden Tractors
020895
220
10
4