Auto Tune TM Chainsaws Auto Tune TM customer

Auto. Tune. TM Chainsaws

Auto. Tune. TM customer benefits § Maximum power Always a top performing machine with minimum effort. § Ease of use No time spent on manually setting the carburettor.

Auto. Tune. TM customer benefits Auto. Tune. TM provide maximum power throughout automatic engine setting. No time spent on manual carburettor adjustment. Auto. Tune. TM compensates for different fuels, altitude, humidity and ambient temperature.

Auto. Tune. TM is an integrated microprocessor that governs and manages engine power. Auto. Tune. TM compensates for: + Different fuel types + Altitude + Humidity + Ambient temperature Auto. Tune. TM is activated when you pull the starter handle. Auto. Tune. TM is pre-programmed with default settings and need about 3– 5 minutes in use to reach maximum engine power for the current conditions. Auto. Tune. TM tunes the engine to start fast with stable idling and to perform at maximum power.

Auto. Tune. TM All software updates are communicated on your local Husqvarna support site. PC-software available for dealers. Diagnostic tool manages: - engine error codes - number of working hours - engine rpm history - temperature history - fuel setting history

Auto. Tune. TM – how does it work? There are five active components in the Auto. Tune. TM concept. Auto. Tune. TM module: A microprocessor that governs and manages engine performance. Auto. Tune. TM module Magnetic valve (integrated in Auto. Tune TM module) The amount of fuel provided to the carburettor is adjusted by the magnetic valve. Magnetic valve Temp sensor (integrated in Auto. Tune TM module) Provide info to the Auto. Tune. TM module about ambient temperature Temp sensor Throttle sensor: Provide info to the Auto. Tune. TM module about throttle position. Throttle sensor Ignition module: Controls iginition timing. Provide info to the Auto. Tune. TM module about rpm. Provide electrical power to Auto. Tune. TM module. Ignition module

Auto. Tune. TM – how does it work? There are three main modes with specific targets in the Auto. Tune. TM concept. Idling mode Target Correct idling speed Tuning mode Target Maximum power

Auto. Tune. TM – how does it work? Throttle sensor Ignition module Magnetic valve Temp sensor Auto. Tune. TM module Condition: Start pull Starting mode Condition: Throttle position idling Idling mode Condition: WOT, 8000 -12000 rpm Tuning mode

Auto. Tune. TM – how does it work? Starting mode Idling mode Tuning mode ! 1 By pulling the starter handle, Auto. Tune. TM module is activated / powered. Auto. Tune. TM module instructs the magnetic valve to open. 1 Auto. Tune. TM module Magnetic valve

Auto. Tune. TM – how does it work? Starting mode Idling mode Tuning mode 1 Idle ! 1 The Auto. Tune. TM instructs the ignition module about idling mode by the position of the throttle sensor. Auto. Tune. TM module Ignition module 2 Ignition module adjusts ignition timing for correct idling speed and inform Auto. Tune. TM module about current rpm. Auto. Tune. TM module adjusts fuel supply. ! 2 Ignition module ! Auto. Tune. TM module Magnetic valve

Auto. Tune. TM – how does it work? Starting mode Idling mode Tuning mode 1 ! 1 Auto. Tune. TM module instructs the magnetic valve to momentarily limit the fuel supply (minor lean out test). Auto. Tune. TM module Magnetic valve 2 After each lean out test the Auto. Tune. TM module uses the rpm info from ignition module. 2 ! rpm 3 Depending on rpm response from lean out test (step 1 + 2), Auto. Tune. TM module instructs the magnetic valve to gradually adjust fuel setting to reach maximum power. This way Auto. Tune. TM module indirectly adjusts for fuel type, altitude, ambient temperature and humidity to reach maximum engine power. Auto. Tune. TM module Ignition module ! 3 Auto. Tune. TM module Magnetic valve

Auto. Tune. TM Q & A Questions and answers Q 1: Compared to a traditional machine, what are the benefits with Auto. Tune. TM? A 1: Ease of use and that the engine always performs at maximum power. Q 2: Can I just start up my new Auto. Tune. TM chainsaw and start working or does it require some time to tune in? A 2: The engine tuning starts automatically and takes about 3 -5 min under load. Q 3: Are there no possibilities for manual adjustments at all? A 3: No, there is no need for manual setting. Q 4: What about fuel consumption, is it higher or lower compared to a traditional machines? A 4: The fuel consumption will be the same. Q 5: How fast does Auto. Tune. TM adjust to different fuels? A 5: In about 3 -5 minutes under load. Q 7: What about idling – can I adjust that myself? A 7: No, this is automatically adjusted by Auto. Tune. TM.

Auto. Tune. TM Q & A Questions and answers Q 8: Will the Auto. Tune. TM unit give recommendations on repair work that needs to be done? A 8: The diagnostic tool can show the technician which parts that needs to be exchanged in case of malfunction of the electronic parts. Q 9: Does my Auto. Tune. TM chainsaw require specific service and maintenance? A 9: No, not more than what is mentioned in the OM. Q 10. Is it still an ordinary carburettor? A 10: Yes, but no carburettor needles. Q 11. Are there any restrictions on fuel ? A 11: No, there are no specific restrictions for Auto. Tune. TM more than “normal” restrictions described in the OM. Q 12. Is there any work situation where Auto. Tune. TM is not recommended? A 12: No. Q 13. How often is a lean out test performed? A 13: Approximately once per second. Q 14 Can I get more power out of my 550 XP if I download Auto. Tune. TM software for 560 XP? A 14: No, the power is related to the engine size.

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