Troy-Bilt 644A, 640C Walk behindand to one side, Tiller, usingone handon the handle, Stumps

4.Exercisecautiontoavoidslippingorfall- If in doubtaboutthe tilling conditions, al-

ing.ways usethe following operating precau-

5.Iftheunitshouldstarttovibrateabnor- tionsto assistyou in maintainingcontrol

mally,stoptheengine,disconnectthe	of the tiller:
	a. Walk behindand to one side of the
sparkplugwireandpreventitfromtouch-
		tiller, usingone handon the handle
ingthesparkplug,andcheckimmediately
forthecauseVibrationisgenerally.		bars Relax yourarm, but use a
warningoftrouble.		secure handgrip.
6. Stop the engine, disconnectthe spark	b. Use shallower depthregulator
		settings, working gradually deeper
plug wire and prevent it from touching the
		with each pass.
spark plug, wheneveryou leavethe operat-
	¢. Use slower engine speeds.
ing position, before unclogging the tines,
	d. Clear the tilling area of all large
or when making any repairs, adjustments
		stones, rootsor other debris.
or inspections.
	e. Avoidusing downwardpressureon
7. Takeall possible precautions when leav-
		the handlebars. If need be, use
ing the machine unattended.Stop the en-
		slight upwardpressureto keep the
gine. Disconnect the spark plug wire and
		tines from diggingtoo deeply.
move it awayfrom the spark plug. Besure
	f.	Beforecontacting hard packedsoil
that both wheelsarein the Wheel Drive po-
		at the end of a row, reduce engine
sition.
8. Before cleaning, repairing, or inspect-		speed and lift the handlebarsto
		raise the tines out of the soil.
ing, stop the engine and make certain all
	g. In an emergency,stopthe tines and
moving parts have stopped. Disconnect
		wheels by releasing whichever
the spark plug wire and prevent it from
		clutch controlis engaged.Do not
touching the spark plug to preventacci-
		attemptto restrain the tiller.
dental starting.
9. The flap on the fine hood must bedown	15. Do not overloadthe tiller'scapacityby
	attempting to till too deeply at too fast a
when operating the tiller.
	rate.
10. Neveruse the tiller unless proper
	16. Neveroperate the tiller at high trans-
guards, plates, or other safety protective
	port speeds on hard or slippery surfaces.
devices are in place.
	Look behind and use care when backing
11. Do not run the engine in an enclosed
	up.
area. Engineexhaust contains carbon
	17. Donot operatethe tiller on aslope that
monoxide gas, a deadly poison that is
	is too steep for safety. When on slopes,
odorless, colorless, and tasteless.
	slow down and makesure you have good
12. Keepchildren and pets away.
	footing. Neverpermit thetille rto freewheel
13. Never operate the tiller underengine
	down slopes.
powerif thewheels are in the Freewheel	18. Neverallow bystanders nearthe unit.
position. In the Freewheelposition, the
	19. Onlyuse attachmentsand accessories
wheelswill not hold the tiller back andthe
revolvingtines could propel the tiller rapid-	that are approved by the manufacturer of
	the tiller.
ly,possibly causingloss of control. Always
	20. Usetiller attachmentsand accessories
engagethe wheels with the wheel drive
	when recommended.
pins in the Wheel Drive position before
starting the engine or engaging the	21. Neveroperate the tiller without good
tines4Nheelswith the Forward Clutch Bail	visibility or light.
(all models) or the ReverseClutch control
	22. Neveroperatethe tiller if you aretired;
(Model 644A only).
	or underthe influence of alcohol, drugs or
14. Be aware that the tiller may unex-
	medication.

pectedlybounceupwardor jumpforward	23. Operatorsshall not tamper with the en-
if the tines shouldstrike extremely hard
	gine-governor settings onthe machine;
packedsoil, frozen ground,or buried ob-
	the governor controls the maximum safe
stacles like large stones, roots, or
	operating speed to protect the engine and
stumps.
	all moving parts from damagecaused by
	overspeed.Authorized service shall be
	sought if a problem exists.

24.Do not touch engine parts which may behot from operation. Let parts cool down sufficiently.

25.Pleaseremember:Youcan alwaysstop

the tines and wheels by releasingthe For- ward Clutch Bail or on Model 644Athe Re-

verseClutch control, (whichevercontrol is engaged),or by moving the ignition switch

and/orthrottle control lever on the engine to "OFF" or "STOP".

26.To load or unloadthe tiller, seethe in- structions in Section4 of this Manual.

27.Useextreme caution when reversing or pulling the machinetowards you.

28.Startthe enginecarefully accordingto

instructions and with feet well away from the tines.

29.Neverpick up or carry a machinewhile the engineis running.

MaintenanceandStorage

1.Keepthe tiller, attachmentsand acces- sories in safeworking condition.

2.Checkall nuts, bolts, and screws for

proper tightness to besure the equipment is in safeworking condition.

3.Neverstore the tiller with fuel in the fuel tank insidea building where ignition sourc- esare presentsuchas hot waterandspace heaters, furnaces, clothes dryers, stoves, electric motors, etc.). Allow the engineto cool before storing the unit in any enclo- sure.

4.To reducethe chances of a fire hazard, keepthe enginefree of grass, leaves,or ex- cessivegrease.

5.Store gasoline in acool, well-ventilated area, safely awayfrom any spark- or flame-producing equipment. Store gaso-

line in an approved container, safely away from the reachof children.

6.Referto the Maintenancesections of

this Manual and the separateEngineOwn- er'sManual for instructions if the unit is to

bestored for an extendedperiod.

7.Neverperform maintenancewhile the engineis running orthe spark plug wire is connected,except when specifically in- structed to do so.

8.Ifthe fuel tank hasto be drained, dothis outdoors.