Shindaiwa 81532 User Manual

1

The metal gearcase protector (p/n 7958-

1610) is installed to protect the gearcase 

flange from damage when working close to 

sidewalks or other abrasive surfaces, and 

should be routinely inspected for damage 

or excessive wear. 
When replacing the protector, inspect to be 

sure that both of the protector mounting 

screws are firmly tightened and each screw 

is locked in place with a nut as shown.

   

CAUTION!

The D-shaped shim washer must be 

positioned with its flat edge toward the 

shaft tube.

26024   

50-Hour Maintenance (continued)

135-hour Maintenance

Every 135 hours of operation, 

remove and clean the muffler.

WARNING!
Never operate this trimmer 

with a damaged or missing muffler or 

spark arrester! Operating with missing 

or damaged exhaust components is 

a fire hazard, and can also damage 

your hearing!

1. Remove the spark plug boot.
.  With a  mm hex wrench remove the 1 

muffler cover and  engine cover screws 

and the engine cover. See Figure 5.

.  With a Phillips type screwdriver remove 

the 5 screws holding the spark arrester 

screen and cover to the muffler. See 

Figure 5.

4.  Remove the screen and clean it with a 

stiff bristle brush.

5.  With a 4 mm hex wrench remove the  

muffler bolts and the muffler.  

See Figure 5.

6.  Inspect the cylinder exhaust port for any 

carbon buildup.

7.  Gently tap the muffler on a wood surface 

to dislodge any loose carbon.

IMPORTANT!

If you note excessive carbon buildup, consult 

with an authorized Shindaiwa servicing 

dealer.

8.  Reassemble the spark arrester, muffler 

and engine cover in the reverse order of 

disassembly.