Hi there and welcome.
1. The manual (CAN BE FOUND HERE:
2009 Manaul) states the following regarding engine break-in:
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A break-in period of 1 000 km (600 mi) is required for the vehicle.
During the first 300 km (200 mi), avoid hard braking.
New brakes and tires do not operate at their maximum efficiency until their break-in is completed. Braking, steering and VSS (p.34) performance may be reduced, so use extra caution. Brakes and tires take about 300 km (200mi) of riding with frequent braking and steering to break-in. For riding with infrequent braking and steering, allow extra time to break-in the brakes and tires.
During the first 1 000 km (600 mi): – Avoid full throttle acceleration.
– Avoid prolonged riding.
– If the cooling fan operates continuously during stop and go traffic, pull over and shut off the engine to let it cool off or speed up to let air cool off the engine.
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So, as per BRP's suggestions in the manual, I am personally doing just that, by the book! I've not hit top speed, I've avoided full throttle acceleration, avoiding prolonged riding (the most I've rode at one time was about 30km without stopping, at normal rpm's, then stopping for a 10min break (to take photos, fill up the tank, or just to hang out and enjoy a landscape from a roadside pull-in ).
I've kept a close eye on the cooling fan and the cluster's temp gauge. Once, in traffic it did touch 5 bars, then the fan kicked in. Still in traffic waiting at a red light it dropped back to 4 bars and the fan turned off . Later while on the highway doing about 110km/hr (68miles/hr), in 5th gear, the bars dropped back to 3 bars.
As for the brake and tire break-in; I've not braked really hard, but have used them of course, when riding, but also on an empty parking lot, practicing the swerves and stopping-on-the-spot exercises.
I've had questions about RPM ranges and cursing speed RPMs. This thread may help you:
http://www.spyderlovers.com/forums/showthread.php?t=17129&highlight=cruise
2. I've ridden ( and others here on the forum have, more then I ), at 15-20F without problems with the engine. I have heard that too much below 15F and the Dynamic Power Steering maybe a little slow to react, but I have not experienced this myself. My cold weather riding limit is 15-20F.
3. As mentioned by others, the manual explains the adjustments to be done on the shocks. They are typically adjusted based on your weight and if you're riding frequently with a passenger, or not. As Scotty has mentioned above, the tool for adjusting the the shocks are in the stock tool kit located in the trunk. I have never adjusted my shocks, as they come pre-set for my weight. Scotty - good idea (as always

) on the WD-40 before adjusting!
Here are the specs for the shocks:
RECOMMENDED REAR SHOCK ADJUSTMENT
FRONT SHOCK SETTINGS:
LOAD_______________________CAMPOSITION
68 kg (150 lb) rider___________1, 2
91 kg (200 lb) rider ___________3
68 kg (150 lb) rider with cargo __3
91 kg (200 lb) rider with cargo __4
Rider with passenger and cargo __5
REAR SHOCK SETTINGS:
LOAD _________________CAM POSITION
68 kg (150 lb) rider ______1, 2
91 kg (200 lb) rider ______3-5
Rider with passenger _____6, 7
4. I will highly recommend reading over the manual a few times and practicing BRP's suggested Spyder riding techniques and drills (see link to manual above).
Hope that helps, Ryde Safe and Have Fun!