20 Most Recent Arctic Cat 2011 450 H1 EFI 4x4 Questions & Answers

How many miles ? It sounds like the carb ..

Are all the shift linkages tight? Engine and tranny mounts?

weak fuel pump, choke not working ? Here are the service manuals for all Arctic cat ATVs

Bad timing ? water in the fuel. here are the service manuals for all Arctic cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Adjustment between the shift lever and gearbox here are the service manuals for all Arctic Cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Common problem is there is water and dirt that gets inside the actuator and it strips the plastic gears inside. Here are the service manuals for all Arctic Cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Sounds like the thermostat is not opening Here are the service manuals for all Arctic cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Here are the service manuals for all Arctic cat ATVs Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

take off the horn unit power it direct if it works its ok, if not replace, next step wire a small bulb into the horn wires and press the button if it lights the switch is ok, if you have a circuit tester put one end on the battery ground and check for power in the horn wires if their is power there put the lead on battery positive and press the horn button if there is no power their the switch or wiring is faulty

Question edited for clarity, correct order and add maker. Question moved from Cars and Trucks to model category. Service manual https://www.manualslib.com/products/Suzuki-Kingquad-5901790.html ..

https://www.motosport.com/atv/oem-parts/suzuki/2004/eiger-400-4x4-auto/wiring-harness

It seems that the clutch is not disengaging may need a adjustment unless it is hydro drive then I am stumped.