Clean Engine

theoilmustbetoFULLmarkondipstick.

Changeengineoilevery50hoursofoperation

undernormaloperatingconditionsChangeoil.

every25hourswhenoperatingnderheavy

loadorinhightemperatures. ToDrainOil Drainoilwhileengineiswarm.Followinstructions

. givenbelow.

•Removeoildrainplug.Catchoilina suitable

container.

•When engine is drained of all oil, replace drain plug securely.

•Refill with fresh oil. Refer to GAS AND OIL

FILL-UP section on page 9.

•Replace dipstick.

Air Cleaner

The air cleaner prevents damaging dirt, dust, etc., from entering the carburetor and being forced into the engine and is importantto engine life and

performance. For location of air cleaner, see Figure 14 inset.

To Service Air Cleaner:

Service air cleaner cartridge every 25 hours of operation or every season, whichever comes earlier. Service more often if you operate the chipper- shredder under extremely dusty conditions.

•Remove two hex screws and cover holding the air cleaner cartddge in place. Remove air cleaner assembly from inside the cover and disassemble. See Figure 14.

Air Cover

Cleaner

•Wash pre-cleaner, if so equipped, in liquid detergent and water. Squeeze dry with a clean cloth. Saturate in engine oil, then squeeze in clean, absorbent cloth to remove all of the excess oil. Replace the pre-cleaner if it is very dirty or damaged.

•To service cartridge, clean by tapping gently on a flat surface. Do not use any oil, petroleum solvents like kerosene, or pressurized air to clean cartridge. Replace ifthe cartridge is very dirty or damaged.

•Reassemble first the retainer on pre-cleaner and cartridge end then the cartridge assembly inside the cover. Insert tabs on cover into slots in base and tighten the two screws eadier removed.

•Clean engine periodically. Remove dirt and debris with a cloth or brush.

•Frequently remove grass clippings, dirt and debris from cooling fins, air intake screen and levers and linkage. This will help ensure adequate cooling and correct engine speed.

See Figure 15.

_	Clean here

	, _	C_ean here
Pre-Cleaner	Cartridge	Figure 15
	Cartridge

Yeady or every 25 hours, whichever occurs first, remove the blower housing and clean the areas shown in Figure 15 to avoid overspeeding, overheating and engine damage. Clean more often if necessary.

NOTE: Cleaning with a forceful spray of water is not recommended as water could contaminate the fuel

system.

Cover	"ab	Base	•	Remove combustion deposits every 100 hours
Screw	"ab	Base		of operation. Remove the cylinder head, scrape
Figure 14				and wire brush such deposits from cylinder
Figure 14