16
Changing the nose sprocket: 6 tooth vs.
11 tooth.
See fuel specifications in power head manual for your
specific model.
Use minimum of 87 octane unleaded fuel, with the
correct mixture (1:50 or 2%) of two-stroke oil for
air-cooled engines. Never use two-stroke oil intended
for water-cooled engines. Never use oil intended for
four-stroke engines. Mix the fuel and oil in a clear con-
tainer intended for gasoline. Do not start the engine if
fuel has been spilled nearby as sparks may cause a fire.
Transport and store the machine upright so that there
is no risk of fuel leakage. For long-term storage, drain
the fuel mixture from the machine.
Fuel and two-stroke oil:
Maintenance and Troubleshooting
Continued:
Solution: See
Husqvarna manual for detailed informa-
tion about “Starting and Stopping,” (pp 24-26).
Problem: Engine won’t start, or starts
with difficulty
Changing the sprocket is fairly straightforward. To
change the nose sprocket:
1. Heat the screws to loosen the locking com-
pound.
2. Remove the M8 screws [16] using an im-
pact driver.
3. Remove the plates and swap out the sprock-
et.
4. Add a locking compound to the screws
before reinstalling.
5. Tighten the screws to 33Nm.
Failure to add locking compound when
reinstalling sprocket could result in injury or
damage to equipment!
The 6-tooth nose sprocket is designed to clear rocks
from the chain, but has less chain engagement. The
sprocket is ideal for moderately rocky soil, sandy and
coarse soil.
The 11-tooth nose sprocket is ideal for loose top soil,
clay, hard and compacted soil.
