Husqvarna K750 User Manual

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English
 – 15
FUEL HANDLING
Disconnection function for OilGuard
Machines fitted with OilGuard have a built-in system for 
identifying incorrect fuel mixtures. Once the machine is 
running, a detector reads the fuel quality which takes about 
ten seconds. If the correct amount of Husqvarna OilGuard oil 
has been used, the machine will run at a normal speed. If the 
wrong type of oil has been used, the machine senses this and 
restricts the speed of the engine to 3,800 rpm to avoid 
damaging the engine. In order for the machine to run at 
normal speed again, you must drain the incorrect fuel mixture 
and then fill the machine with a fuel mixture containing the 
correct ratio (2 %) of Husqvarna OilGuard oil.
When the machine is delivered, the OilGuard plug A (blue) 
and the blue indicator pin B are fitted in the tank. If you are in 
a situation where you do not have access to Husqvarna 
OilGuard oil, but you have oil of a similar quality, you can 
deactivate the OilGuard system using the disconnection 
function. To deactivate the function, pry off the OilGuard plug 
using a screwdriver and then break off the indicator pin. Now 
fit the disconnector plug C (orange) in the tank to complete 
deactivation and to cover the hole. 
If you want to reactivate the OilGuard system, press the 
OilGuard plug again. The system is then reactivated, but note 
that the broken indicator pin cannot be refitted. A broken 
indicator pin indicates that the OilGuard system has been 
disconnected. You can purchase a new indicator pin as a 
spare, but this is only sold in grey which indicates that the 
OilGuard system has been deactivated since the machine left 
the factory.
Fueling
Keep the handle dry and free from oil and fuel.
Ensure that the fuel is well mixed by shaking the container 
before filling the tank.
Always exercise care when refilling the fuel. Move the 
machine at least three metres from the fuelling area 
before it is started. Check that the fuel cap is tightened 
correctly.
Clean around the fuel cap. Clean the fuel and oil tank 
regularly. The fuel filter should be changed at least once a 
year. Contamination in the tanks causes malfunction.
A
B
C
!
WARNING! Taking the following precautions, 
will lessen the risk of fire:
Do not smoke or place hot objects near fuel.
Always shut off the engine before refuelling.
When refuelling, open the fuel cap slowly so 
that any excess pressure is released gently.
Tighten the fuel cap carefully after refuelling.
Always move the machine away from the 
refuelling area before starting.