Shindaiwa 89309 - Manual (Page 11)

Cable adjustor
Locknut
Throttle cable
Throttle lever free play
5-7 mm (0.2-
0.275”)
Locknut
Guide Bar
Cutter
Blades Shoulder Bolt
Washer
(should turn
freely)
Adjusting cutter blades
)XHO¿OWHU
Hooked
wire
BOTTOM
VIEW
Gearcase grease
¿WWLQJ
50 hour maintenance
11
50 hour maintenance
CAUTION!
Make sure you do not pierce the fuel line
with the end of the hooked wire. The line
is delicate and can be damaged easily.
Ever y 50 hours of operation (more
often in dusty or dirty conditions):
Remove and clean the cylinder cover and
Ŷ
clean grass and dirt from the cylinder fins.
Gearcase lubrication
Remove the gearcase cover, and use solvent
and a soft brush to remove all old grease
from the gearcase. To refill, hand-pack the
gearcase with approximately 40–50 grams
of high quality lithium-based grease (50–
70% of capacity). DO NOT OVERFILL!
Remove and replace fuel filter element
Use a wire hook to extract the fuel filter
Ŷ
from inside the fuel tank. Inspect the
fuel filter element. If it shows signs of
contamination from debris, replace it
with a genuine Shindaiwa replacement
fuel filter element.
Before reinstalling the filter, inspect the
fuel line. If you discover damage or dete-
rioration, the unit should be removed
from service unitl it can be inspected by
a Swisher-trained service technician.
Throttle free play adjustment
If the unit does not return to idle speed
or doesen’t reach full rpm, the throttle
lever free play may need to be adjusted as
follows:
Measure free play at the end of the 1. throt-
tle lever. Throttle lever free play should
be approximately 5-7 mm (0.2-0.275”).
If adjustment is necessary, remove the 2.
air cleaner cover by loosening the two
thumbscrews. Loosen the cable adjuster
lock nut and turn the cable adjustment fit-
ting in or out until throttle lever free play
is approximately 5-7 mm (0.2-0.275”).
Replace the air cleaner cover, and 3.
tighten the cover retaining screws
securely.
Cutting performance of your machine
depends a great deal on proper cutter
blade adjustment. Properly adjusted
blades will oscillate freely yet help pre-
vent binding of cut material between
blades. Adjust blades as follows:
Loosen all blade locknuts at least one 1.
full turn.
Tighten each blade shoulder bolt 2.
firmly, and then loosen the shoulder
bolts 1/4 to 1/2 turn.
Cutter blade adjustment
Working from the gearcase end, lock 3.
each bolt in place by firmly tightening
its locknut while preventing the shoul-
der bolt from turning.
When shoulder bolt adjustment is cor-
rect, 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.
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. Never operate the
machine with damaged or worn cutters.