Description

Arctic Cat 250, 300, 400 FIS, 400 ACT, 400 TBX Workshop Manual

Working on your Arctic Cat 250, 300, or any of the 400 variants — FIS, ACT, or TBX — and you’re staring at a loose steering post or a bent tie rod? I’ve seen guys guess at torque specs with a beam wrench and then wonder why the ball joint pops out at 20 mph. That’s not a fix, that’s a liability. This Arctic Cat 250, 300, 400 FIS, 400 ACT, 400 TBX Workshop Manual is Section 8 from the factory set — 42 pages dedicated to steering, frame, body panels, and exhaust. No generic illustrations, no “similar to” crap. These are the same diagrams and specs the dealer tech uses.

Steering Post/Tie Rods: Factory Disassembly Sequence

Starting on page 8-2, you get an exploded view of the steering post assembly with part numbers for each model. The 250 uses a specific bracket (part 0739-476 or 0739-774) that’s different from the 300 and 400 FIS/ACT. If you pull the cap screws in the wrong order — and I’ve seen it happen — you can mushroom the bearing flange. The manual calls out the exact fastener: cap screw, shoulder screw, lock nut, cotter pin. For the 400 TBX, the steering knuckle section on page 8-10 shows an extra bearing with an oil seal that the 250 doesn’t have. You need that detail if you’re replacing a knuckle on a TBX.

Does This Manual Cover All Four Models?

Yes, but with model-specific callouts. The front fender/side panel section splits the 250/300/400 FIS/ACT/TRV from the 400 TBX/500/650 H1/650 V-Twin. That means you get separate schematics for each body style. If you own a 400 TBX, you also get the side storage box and cargo box procedures — pages 8-37 and 8-38. The 250 and 300 owners get the rear fender procedure on page 8-35. Every exploded view includes the keyed list of fastener sizes and the thread pitch where it matters. You won’t find a “one-size-fits-all” torque chart here.

7 Systems Covered in Section 8 Alone

Steering post, tie rods, handlebar grip, steering knuckles, toe-in adjustment, body panel assembly, frame/exhaust assembly, front rack, front bumper, front fenders, side panels, fender flares, footrests, belly panel, exhaust system, rear rack, rear fender, rear body panel, side storage box, cargo box, headlight adjustment, taillight assembly, and seat. That’s more than seven, but the point is: this one section handles the entire chassis and front clip. For a DIY guy replacing a cracked fender or rebuilding the steering after a hit, this saves an afternoon of figuring out which bolt goes where.

Measuring Toe-In the Right Way

Page 8-13 gives the factory procedure for measuring and adjusting toe-in. If you skip this step after installing new tie rods, the ATV will dog-track and wear out tires in 50 miles. The manual tells you to set the steering straight, measure from the center of the front tires at spindle height, and adjust the tie rod ends equally. It does not say “tighten until it feels good.” That kind of instruction gets people hurt. Use a tape measure and a helper, or buy a toe-in gauge. The spec is in the manual; I’m not typing it here because you need to see the diagram.

Body Panel Assembly Schematics: What You Get

Pages 8-15 through 8-20 are the body panel and frame/exhaust assembly schematics. These are line drawings with part callouts — not photos that hide fasteners. You see the belly panel, the footrests, the exhaust hangers, and how the front rack mounts to the frame. If you’re pulling the engine or replacing a cracked frame tube, you need these sheets to know which fasteners are structural (coarse thread, grade 8) and which are cosmetic (sheet metal screws). The second paragraph on page 8-3 shows the removal steps for the 250/300/400 FIS/ACT: remove seat, turn gas valve off, disconnect fuel hose, remove side panel. That’s step one. If you skip the fuel hose disconnect and try to tilt the tank, you’re cleaning up gas on your garage floor.

Torque Specs and Aftermarket Documentation

I’ll say this once: aftermarket manuals pull specs from the internet. Some are close, some are off by 20 ft-lb. On a steering knuckle where the bolt thread is fine pitch and the housing is cast aluminum, wrong torque cracks the casting. This factory manual lists the actual OEM torque values for every cap screw, lock nut, and ball joint nut in the steering section. You also get the bearing installation notes — like which side the oil seal faces on the 400 TBX knuckle. That kind of detail doesn’t come from a chiltons. For a related resource, check the Arctic Cat 2008 ATV Service Manual if you have a newer model, but for the 250–400 series, this is the one. Also see the Arctic Cat 250 2006 Service Manual or the Arctic Cat 250 2008 Service Manual for model-year specific updates.

If you need background theory on manual transmission or exhaust systems, the Manual Transmission and Catalytic Converters articles might be useful, but they don’t replace factory torque data. Stick with the original print.

Frequently Asked Questions

Is this manual for complete beginners?

No. It expects you know how to use a torque wrench and a basic socket set.

Does the manual include torque specs for steering knuckles?

Absolutely — the steering knuckle section on page 8-10 lists the cap screw and lock nut torque values for each model. The 400 TBX uses different bearing flanges with an oil seal, so the torque sequence matters. The manual shows exploded views and calls out which fasteners get threadlocker. If you reuse a nylock nut without checking the spec, you risk the joint loosening under load. Factory torque values are printed directly on the diagram, not buried in an appendix. You’ll also find the toe-in adjustment procedure on page 8-13 with a factory spec that accounts for the 250’s lighter front end versus the 400 FIS with its heavier rack. That level of detail is why you buy the factory manual instead of a $10 PDF.

You can keep guessing torque specs and hoping your steering doesn’t pull, or you can work from the same binder the dealer keeps locked in the service bay. Access the Factory Manual and torque it once.