Shindaiwa AHS2510, 68800-94313 manual Cutter Blade Adjustment, 10/15-Hour Maintenance

Cutter Blade Adjustment

WARNING!

The cutter blades are very sharp! Always wear gloves when working around the cutter assembly.

CAUTION!

Operating the trimmer with worn or improperly adjusted cutters will reduce cutter performance and may also dam- age your machine.

Cutting performance of your machine de- pends a great deal on proper cutter blade adjustment. Properly adjusted blades will oscillate freely yet help prevent binding of cut material between blades.

Adjust blades as follows (Figure 17):

1.Loosen all blade locknuts at least one full turn.

2.Tighten each blade shoulder bolt firmly, and then loosen the shoulder bolts 1/4 to 1/2 turn.

3.Working from the gearcase end, lock each bolt in place by firmly tightening its locknut while preventing the shoul- der bolt from turning.

When shoulder bolt adjustment is correct, there should be a gap of

0.25–0.50 mm between the cutter blades and the flat washers, and the flat washer beneath each bolt head should turn freely.

Locknut

Guide Bar

Cutter Blades		Washer
	Shoulder	(should turn
Figure 17	Bolt	freely)

10-Hour Maintenance

(more frequently in dusty conditions)

1.Remove the air cleaner cover by loosen- ing the thumb screws and lifting up. See Figure 18A.

2.Remove and inspect the pre-filter. If the pre-filter is torn or otherwise damaged, replace it with a new one. See Figure 18B.

3.Clean the pre-filter with soap and water. Let dry before reinstalling.

4.Inspect the air cleaner element. If the element is damaged or distorted, re- place it with a new one.

5.Tap filter gently on a hard surface to dislodge debris from element or use compressed air from the inside to blow debris out and away from the air filter element.

10/15-Hour Maintenance

CAUTION!

Before removing the spark plug, clean the area around the plug to prevent dirt and dust from getting into the engine’s internal parts.

Every 10 to 15 hours of operation:

nRemove and clean the spark plug. See Figure 19. Adjust the spark plug electrode gap to 0.024-inch (0.6 mm). If the plug must be replaced, use only: NGK CMR5H or equivalent.

Unscrew

Fasteners

Figure 18A

IMPORTANT!

Direct the air stream at the inside face of the filter only!

6.Install the filter element, pre-filter and cover in the reverse order of removal.

Clean the spark

plug and check

the gap at the

electrode.

0.024 inch

(0.6 mm)

Figure 19

nLubricate the cutter assembly gear- box by pumping one or two strokes of lithium-base grease into the grease fitting using a lever-type grease gun. See Figure 20.

Pre-Filter

Filter

Element

Figure 18B

CAUTION!

Never operate the unit if the air cleaner assembly is damaged or missing!

CAUTION!

Overlubricating can cause the gearbox to operate sluggishly and can cause grease to leak out.

Gearbox Grease

Fitting

Figure 20

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