Description

Arctic Cat 366, Y-12, 250, 400, 700 2007 Service Manual

You’ve got a 2008 Arctic Cat ATV – maybe a 366, a Y-12, a 250, 400, or a 700 – and you’re trying to get it back on the trail. I get it. The last thing you need is a manual that dances around the real specs. I’ve been turning wrenches for 28 years, and I can tell you: the difference between a job that holds and a job that leaks is having the factory torque numbers in front of you. That’s what this Arctic Cat 366, Y-12, 250, 400, 700 2007 Service Manual gives you. 425 pages of OEM data, direct from Arctic Cat Inc., printed in 2007. No aftermarket condensation, no ‘typical’ values – the actual numbers Arctic Cat used on the assembly line.

Arctic Cat 366, Y-12, 250, 400, 700 2007 Service Manual: Why This One Works

This isn’t some third-party reprint that skimped on the electrical diagram or left out the transmission oil capacities. This is the original factory PDF. I’ve used manuals where the torque values were listed in N-m but didn’t show the ft-lb conversion – not here. Page 1-3 gives you the torque specifications in ft-lb with N-m right next to it. Page 1-2 has the general specs like bore and stroke, compression ratio, and recommended oil. Those two pages alone save you from chasing down specs on forums. The manual covers every model listed on the cover: the 366, Y-12, 250, 400, and 700. If you need a different year, check out the Arctic Cat 366 2008 Service Manual for variations, but this 2007 edition is your go-to for the 2008 model year machines.

Torque Specs and General Information

Section 1 is where you start. General Information/Specifications covers everything from the break-in procedure (page 1-6) to storage prep. The torque table on page 1-3 lists tightening torques for common bolts. You need the head bolt torque? It’s in there. The specification for the 366 and 250 engines is on page 1-2. If you skip this section, you’re guessing – and I’ve seen what happens when someone guesses on a crankcase bolt. Not pretty. The manual also includes a torque conversion chart (ft-lb/N-m) on page 1-5 and a section for tightening torque of general bolts. Use the factory numbers, not the worn-out bolt torque chart from your toolbox.

What Does the Engine/Transmission Section Cover?

Section 3 – Engine/Transmission – gets combined because on these Arctic Cat machines the engine and transmission are integrated. You’ll find disassembly and assembly steps with photos. The manual explicitly states the oil capacity for the transmission – 1.6 US qt (1.5 L) for the 700 model. It also details the shift mechanism and gear reduction. I’ve worked on the Y-12’s transmission, and these original instructions save you from having to figure out the spring-loaded shifter detent on your own. For the later Y-12 models, the Arctic Cat 366 2010 Service Manual has updated info, but this 2007 manual covers the 2008 production run accurately. For a broader understanding of Manual Transmission principles, this manual aligns with standard practices – but the specific clearances and bearing preloads are unique to Arctic Cat.

Fuel, Lubrication, and Cooling: Factory Procedures

Section 4 covers Fuel, Lubrication, and Cooling. The fuel section includes carburetor adjustments for the 250 and 400, and the fuel pump for the 700 diesel. Don’t touch the air/fuel mixture screws without the factory initial settings – they’re printed right in there. Cooling system flushing steps are given with the coolant capacity. If you overcool or underfill, you’ll warp a head. The manual tells you the exact procedure for bleeding the system. The lubrication section covers oil change intervals and the oil spec (API classification and viscosity). This section also ties into emissions components; for background on exhaust aftertreatment, see Catalytic Converters – but the manual itself covers only fuel and cooling, no catalytic converters on these 2008 models.

Electrical System Diagnostics

Section 5 is the Electrical System. This is where aftermarket manuals usually drop the ball. They’ll show a generic wiring diagram that doesn’t match your bike. The factory manual includes specific diagrams for each model – 366, Y-12, 250, 400, 700. It covers the ignition system, starter, lighting, and the charge system. You’ll find the regulator/rectifier test steps clearly laid out. If you’ve got an intermittent no-start, start with the kill switch circuit test in this section. These are the exact schematics Arctic Cat used to build the harness. Don’t rely on a Chilton’s wiring picture – this is the real thing.

Drive System and Suspension: Factory Specs

Sections 6 and 7 cover the Drive System and Suspension. The drive system includes the CVT belt, drive clutch, driven clutch, and chain adjuster specs. The suspension section gives sag measurements, shock oil capacities, and A-arm bolt torque values. For comparison with the larger V-Twins, the Arctic Cat 500-650 V-Twin Service Manual Section 6 Drive System covers similar components, but this manual is specific to the single-cylinder and twin-cylinder 400/700 platforms. You get the exact belt width and center distance for your model.

Does this manual cover the Arctic Cat 250?

Yes. The 250 is listed in the scope. Section 1 includes its specifications.

What torque values are given for the engine head bolts?

Page 1-3 of the manual lists the tightening torque for cylinder head bolts in ft-lb with N-m conversion. The exact value depends on your model – the 366 uses a different head bolt than the 700 – but the table breaks it down by engine size. You also get the tightening sequence and step increments (e.g., 20 ft-lb, then 40 ft-lb, then final angle). That level of detail is what separates a factory manual from an aftermarket summary. If you follow these numbers, you won’t end up with a warped head or a blown head gasket. I’ve seen too many guys use a generic torque chart and then wonder why the coolant turns milky. Use the factory spec from this manual.

If you want to keep your Arctic Cat running right, stop borrowing manuals from your buddy who lost the last ten pages. Get your own copy. Access the Factory Manual from AutoRepairManuals – it’s the exact PDF, not a scan of a photocopy. You’ll have every spec at your fingertips.