Maintenance Flex Shaft
After every 40 hours of operation, the flexible
drive shaft should be removed from the drive
shaft housing and all surfaces should be evenly
greased with a number 2 general purpose lithium
base grease.
1. Remove the machine screw and nylon lock-
nut that secures the bearing housing to the
drive tube. See Fig.
5.
Figure
5
2. Pull the bearing housing, shield and trimmer
implement off the drive tube as an assembly.
3.
Using a needle nosed pliers, pull the flexible
shaft out of the drive tube.
4. Grease the entire length of the shaft with a
light coat of #2 general purpose lithium base
grease.
5.
Insert the flexible shaft into the nylon sleeve.
Make sure that the shaft seats properly in the
clutch drum. Proper seating is obtained
when the flexible shaft is 10 mm
(3/8
inch)
inside the drive tube. See Fig.
6
DRIVE
TUBE
FLEX
SHAFT
Figure
6
4
6.
Mount the bearing housing, shield and
trimmer implement assembly on the drive
tube. It may be necessary to turn the trimmer
implement slightly in order to get the flexible
shaft to mate properly with the cutter head
drive shaft.
7.
Install the machine screw that fastens the
bearing housing to the drive tube and secure
with a new nylon locknut.
Maintenance Preparation for Storage
The following procedure is recommended to
ensure proper operation of the trimmer before
storage of more than a month.
1. Drain the fuel from the tank into a container
designed for gasoline. Start the engine and
let it run at idle speed until it stops and all fuel
is expended.
2. Remove dirt and grime from external parts of
the trimmer. Ensure that the cooling fins are
clean.
3.
Pull the spark plug wire off the spark plug.
Clean around the plug
so
that debris will not
fall into the spark plug hole when the plug is
removed. Remove the spark plug.
4. Pour
5
ml (one teaspoon) of two-cycle oil into
the spark plug hole. This will prevent cor-
rosion from damaging internal engine
components.
5.
Pull the recoil starter handle several times to
distribute the oil throughout the engine.
6.
Reinstall the spark plug. Tighten it to 1.2 kg m
(104 in Ibs). DO NOT CONNECT PLUG
WIRE
TO THE SPARK PLUG.