changing plugs in a 07 z1 - - Arctic Cat Forum

4 Strokes Z1 Turbo / Z1 / T660

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post #1 of 3 Old 04-01-2009, 07:57 AM Thread Starter
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Location: Hermon,Maine
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Sled: 2012 Procross F1100 non-turbo
10-11 Mileage: 2800 07 z1
09-10 Mileage: 2300 07 z1
08-09 Mileage: 3009 07 z1
07-08 Mileage: 1800 2005 f6
06-07 Mileage: 1500 2005 f6
I was thinking about changing the plugs in my 2007 z1 over the summer,would like to know the best and easiet way of doing this,any suggestions? Thanks.
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post #2 of 3 Old 04-01-2009, 07:11 PM
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Sled: Z1TurboLXR LE,& 400hp Z1Turbo ext
10-11 Mileage: 3750
09-10 Mileage: 2667
08-09 Mileage: 2580
07-08 Mileage: 2600
06-07 Mileage: 3200
I am going to take a not so wild guess that you have not done the strongly recommended 5000 mile valve clearance inspection. This inspection would most likely be done twice before you should need to change the plugs, unless you routinely start the sled without it getting a chance to warm up. The procedure to get to the plugs is the same to get to the valves.

This is a 4-stroke and don't need to change the plugs as often as a 2-stroke. That said, my last two 2-strokes didn't get a plug change until 11,000 miles. I only changed the plugs because they had 11,000 miles. I did not notice any different power or MPG afterwards.
I just did the valves on the wife's '07 Z1 that has 5204 miles! I had one exhaust valve that was in the danger zone. The valve was tight to the point I believe it was at a negative .033mm. This means the valve was unable to fully close. I caught it in time and don't believe any seat or valve damage was done because this sled runs strong, smokes my turbo up to 75mph.

But to answer your question, you need to remove your seat, console, all the plastic body panels, tank bracket, steering column, tank, airbox (real fun reinstalling this, NOT) camshaft positioner sensor, and the coils on top of the plugs.

If you read your manual, it tells you that if the plugs need to be changed, take it to your dealer! Good Luck!

PS sorry, no easy way
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post #3 of 3 Old 04-01-2009, 08:28 PM
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Location: lewiston, maine
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Sled: 12 F1100 /78 Cheetah/88 elTigre 6000
10-11 Mileage: 1,800
09-10 Mileage: 2,200
08-09 Mileage: 3,000
07-08 Mileage: 2,150
06-07 Mileage: 2,600
ATV: 2007 h-d road king
2010 Mileage: 3,300
2009 Mileage: 3,600
2007 Mileage: 800
2006 Mileage: 2,400
Like lvr1000 said, it ain't easy. However, it can be done, if you have the mechanical ability. If you're gonna work on these, you should get a factory repair manual cd. Landlocked26 was selling them for around $25.
Back to the plugs, if you do feel the need to change them, I'd go with the iridium plugs. The 08s and newer were fitted with these. I put a set in mine last year, though I didn't notice a difference. They're supposed to start better in very cold temps.
If you have over, or close to, 5,000 miles I would recommend the valve check. I started a thread on this recently, there's some info. from several people there.
(If you lived a bit closer, I'd be able to help a bit)

*previous sleds:
68 olympique
73 tnt silver bullet 294
73 tnt silver bullet 340
80 el tigre 6000
86 pantera
88 wildcat
90 ext
93 ext
95 cougar
97 xlt ltd
02 zl 500
01 z370
03 zr800efi
07 Z1EB
*current sleds:
12 F1100 Retro
78 cheetah 5000
88 el tigre 6000
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