MTD 462 thru 465 manual Troubleshooting, Storing Your Chipper Shredder, Problem Cause Remedy

•An unbalanced blade will cause excessive vibration when rotating at high speeds and may cause damage to the unit. The blade can be tested by balancing it on a screwdriver or nail. Remove metal from the heavy side until it is balanced evenly.

•When reassembling the blade, tighten center bolt to between 550 and 700 in.-labs. and the two out bolts to between 250 and 350 in.-labs.

Storing Your Chipper Shredder

•Clean the equipment thoroughly.

•Wipe equipment with an oiled rag to prevent rust.

•Refer to engine manual for correct engine storage instructions

•Store unit in a clean, dry area. Do not store next to corrosive materials such as fertilizer.

SECTION 6: TROUBLESHOOTING

Problem		Cause		Remedy
Engine fails to start	1.	Spark plug wire disconnected.	1.	Connect wire to spark plug.
	2.	Fuel tank empty or stale fuel.	2.	Fill tank with clean, fresh gasoline.
	3.	Throttle control lever not in correct	3.	Move throttle lever to FAST position.
		starting position. (If Equipped)
	4.	Choke not in CHOKE position.	4.	Move choke to CHOKE position.
		(If Equipped)
	5.	Blocked fuel line.	5.	Clean fuel line.
	6.	Faulty spark plug.
			6.	Clean, adjust gap, or replace.
Engine runs erratic	1.	Spark plug wire loose.	1.	Connect and tighten spark plug wire.
	2.	Unit running on CHOKE.	2.	Move choke lever to OFF position.
		(If Equipped)
	3.	Blocked fuel line or stale fuel.	3.	Clean fuel line; fill tank with clean, fresh
				gasoline
	4.	Water or dirt in fuel system.	4.	Drain fuel tank. Refill with fresh fuel.
	5.	Dirty air cleaner.	5.	Clean or replace air cleaner.
	6.	Carburetor out of adjustment.	6.	See authorized service dealer.
Too much vibration	1.	Loose parts or damaged impeller.	1.	See authorized service dealer.
Engine overheats	1.	Engine oil level low.	1.	Fill crankcase with proper oil.
	2.	Dirty air cleaner.	2.	Clean or replace air cleaner.
	3.	Carburetor not adjusted properly.	3.	See authorized service dealer.
Occasional skip (hesitates)	1.	Spark plug gap too close.	1.	Adjust gap to.030”.
at high speed
Unit does not discharge	1.	Discharge chute clogged.	1.	Stop engine immediately and
				disconnect spark plug wire. Clean flail
				screen and inside of discharge opening.
	2.	Foreign object lodged in impeller.	2.	Stop engine and disconnect spark plug
				wire. Remove lodged object.
	3.	Low engine RPM	3.	Always run engine at full throttle.
	4.	Vacuum bag is full.	4.	Empty bag.
Rate of discharge slows	1.	Low engine RPM.	1.	Always run engine at full throttle.
considerably or	2.	Chipper blade dull.	2.	Replace chipper blade or see your
composition of discharged				authorized service dealer.
material changes.

NOTE: For repairs beyond the minor adjustments listed above, contact your nearest authorized service dealer.

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