AC 300 hard to start - ArcticChat.com - Arctic Cat Forum

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post #1 of 5 Old 01-06-2016, 03:54 AM Thread Starter
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AC 300 hard to start

Hey! has an Arctic Cat 300 4x4 -04. It is really hard to get started when it has been during the night when it's cold outside. allowed to stand for half an hour and pull magnapullen to try to get at the start. once it started, it goes great. start super easy when it is hot! ignition coil is new, the spark plug is nyttt, the carburetor is cleaned, do get a little weak spark at the plug?

Arctic cat 300

3" high kit

Bontyhunter dirt tires

60w ledbar spot.
2x 35w flood

2x 18w back light.
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post #2 of 5 Old 01-06-2016, 06:46 AM
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ATV: 2001 AC500 Manual
Have you adjusted the valves yet?

They should be set to:

Intake - 0.03-0.08mm or 0.001-0.003in
Exhaust - 0.17-0.22mm or 0.007-0.009in

If they are set and it's still hard to start, you can set them to the largest allowed gap making it easier to start. If you hear any chatter, then they are too far apart. But typically in the Cold Regions it is good to have the valves set on the larger gap for easier starting.
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post #3 of 5 Old 01-06-2016, 08:18 AM
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Use the primer on the bottom of the carb.

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post #4 of 5 Old 01-06-2016, 01:08 PM Thread Starter
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adjusted valves. did not insert feeler gauge 0.05 so I adjusted to 0.10 put everything together and it started right away, the first lap of the engine in the 20-

Arctic cat 300

3" high kit

Bontyhunter dirt tires

60w ledbar spot.
2x 35w flood

2x 18w back light.
--------------------------------
Sorry my bad English. google translate is my friend!
--------------
Sweden.
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post #5 of 5 Old 01-09-2016, 03:06 PM
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sounds to me to be an electrical issue if weak spark, magneto could be going bad, starter going bad
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