Shindaiwa DH254 Manuel de l'opérateur télécharger pdf (Page 15)

15

Inspect the Gearcase Protector

The metal gearcase protector is installed

to protect the gearcase ange from

damage when working close to side-

walks or other abrasive surfaces, and

should be routinely inspected for dam-

age or excessive wear.

When replacing the protector, inspect to

be sure that both of the protector mount-

ing screws are rmly tightened and each

screw is locked in place with a nut as

shown.

CAUTION!

The D-shaped shim washer must be

positioned with its at edge toward

the shaft tube.

D-shaped shim washer

(at side toward tube)

Shaft

Tube

Assembly

Gearcase

Reinstall the gearcase onto the outer tube

Gearcase

protector

Nut

Mounting

screw

Inspect the gearcase protector

WARNING!

Blades are not inter-

changeable between Shindaiwa

edgers and unit/brushcutter

models. Operating any unit

with a blade or attachment not

approved for the unit can be

hazardous and may cause seri-

ous injury.

8. Reinstall the gearcase onto the

shaft tube assembly.

9. Align index screw hole in gearcase

with index hole in shaft tube,

and install index screw. Tighten

securely.

10. Tighten the clamp screw and torque

to 5.9 - 8.0 N•m (52 - 69 in•lbs).

Maintenance (continued)

135-Hour Maintenance

IMPORTANT!

The valve clearance should be adjusted. It is highly recommended that this is

done by a Shindaiwa-trained service technician.

■ Combustion chamber should be

decarbonized, and the valve clear-

ance should be adjusted. It is highly

recommended that this is done

by a Shindaiwa-trained service

technician.

■ Replace the spark plug annually:

Use only the type recommended in

the ”Specications” section or an

equivalent resistor type spark plug

of the correct heat range. Consult

“Specication” section for correct

electrode gap.

1. Remove cylinder cover, rocker arm

cover, and spark plug.

Rotate the

crankshaft while observing the pis-

ton through the spark plug open-

ing. When the piston is at the top of

the compression stroke (TDC), the

valves can be adjusted.

2. Loosen adjuster locknut so that the

2.5 mm Allen socket head adjust-

ment screw can turn freely.

3. Insert 0.10 mm feeler gauge between

valve stem tip and rocker arm.

Valve Adjustment

CAUTION!

■ Performing a valve adjustment

incorrectly may cause hard

starting and/or can damage the

engine.

■ If you are unfamiliar with this

engine or uncomfortable with

this procedure, consult with an

authorized Shindaiwa servicing

dealer.

50-hour Maintenance (continued)

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