Stihl HT 75 Instruction Manual - Page 33

Replacing the Starter Rope and Rewind Spring, Removing the Starter Cover

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english If engine is down on power, difficult to start or runs poorly at idling speed, first check the spark plug. : Remove spark plug - see "Starting / Stopping the Engine". : Clean dirty spark plug. : Check electrode gap (A) and readjust if necessary - see "Specifications". : Use only resistor type spark plugs of the approved range. Rectify problems which have caused fouling of spark plug: : Too much oil in fuel mix. : Dirty air filter. : Unfavorable running conditions, e.g. operating at part load. Fit a new spark plug after approx. 100 operating hours or earlier if the electrodes are badly eroded. Replacing the Starter Rope and Rewind Spring 14 2 1 1 1 3 To reduce the risk of fire and burn injury, use only spark plugs authorized by STIHL. Always press spark plug boot (2) snugly onto spark plug terminal (1) of the proper size. (Note: If boot has detachable SAE adapter nut, it must be attached.) A loose connection between spark plug boot and ignition wire connector in the boot may create arcing that could ignite combustible fumes and cause a fire. Removing the Starter Cover : Take out the screws (1). : Remove the cable lug, if fitted. : Lift the starter cover (2) away from the tank (3) and pull it out from under the shroud (4). 000BA036 TR 386BA004 KN 32 HT 70, HT 75

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32
english
HT 70, HT 75
If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
:
Remove spark plug - see “Starting /
Stopping the Engine“.
:
Clean dirty spark plug.
:
Check electrode gap
(A)
and
readjust if necessary – see
"Specifications".
:
Use only resistor type spark plugs
of the approved range.
Rectify problems which have caused
fouling of spark plug:
:
Too much oil in fuel mix.
:
Dirty air filter.
:
Unfavorable running conditions,
e.g. operating at part load.
Fit a new spark plug after approx. 100
operating hours
or earlier if the electrodes are badly
eroded.
To reduce the risk of fire and burn
injury, use only spark plugs
authorized by STIHL. Always press
spark plug boot
(2)
snugly onto
spark plug terminal
(1)
of the proper
size. (Note: If boot has detachable
SAE adapter nut, it must be
attached.)
A loose connection between spark
plug boot and ignition wire
connector in the boot may create
arcing that could ignite combustible
fumes and cause a fire.
Removing the Starter Cover
:
Take out the screws (
1
).
:
Remove the cable lug, if fitted.
:
Lift the starter cover (
2
)
away from
the tank (
3
) and pull it out from
under the shroud (
4
).
000BA036 TR
1
Replacing the Starter Rope
and Rewind Spring
386BA004 KN
1
1
1
2
3
4