Arctic Cat 350, 425 2010 Service Manual – OEM Factory Repair Data

Description

If you are wrenching on a 2010 Arctic Cat 350 or 425 without the factory manual, you are working blind. I have been doing this 28 years, and I can tell you the difference between a rebuild that lasts and one that leaks comes down to the torque sequence on the cylinder head. The Arctic Cat 350, 425 2010 Service Manual gives you those numbers directly from the engineer’s desk. Not some aftermarket guesswork. Not a reprint of a reprint. This is the original 190-page PDF from Arctic Cat.

Torque Specifications You Can Trust

Section 1 – General Information/Specifications includes a dedicated Torque Specifications list with conversions in ft-lb and N-m. That table is the one thing preventing you from snapping a head bolt or losing a differential cover off-trail. I have seen guys use generic values from the internet. That is how you strip threads on an aluminum case. The manual also covers torque for the oil pump drive gear, centrifugal clutch shoe, and every cap screw listed in the periodic maintenance chart. Page numbers for each torque value? Look at the table of contents – it is organized so you find the fastener, then the number.

Engine Overhaul: Valve Assembly from the Factory Manual

Section 3 – Engine/Transmission is the heart of this manual. It walks you through the full top-end rebuild: removing the valve cover, rocker arms, cylinder head, camshaft, cylinder, and piston. Then it goes into servicing – measuring valve stem runout, checking valve guide inside diameter, measuring seat width. The manual gives you the allowable tolerances. If your valve guide deflection exceeds spec, you replace it. No guessing. The Transmission side of that section covers the centrifugal clutch assembly, oil pump drive gear, and the gear position switch. For the 350 model, it separates the removal procedures by side – left-side stator and rotor, right-side V-belt and driven pulley. That level of detail saves hours.

What About the Cooling System for the 425?

The 425 has a liquid cooling system. The manual covers checking and filling it in Section 2 – Periodic Maintenance under “Liquid Cooling System (425)”. It tells you which coolant type, how to bleed air, and the inspection intervals. The 350 is air-cooled, so the manual treats them separately. That is the kind of specificity you pay for. Also in Section 2: the entire periodic maintenance chart includes special tools needed for each job – not a vague list, but actual tool part numbers where applicable.

9 Systems Covered in the Manual

This OEM service manual breaks the 2010 Arctic Cat 350 and 425 into nine sections: General Info/Specs, Periodic Maintenance, Engine/Transmission, Fuel/Lubrication/Cooling, Electrical System, Drive System, Suspension, Steering/Frame, and Controls/Indicators. Each section starts with its own troubleshooting table. The electrical section covers ignition timing, headlights, taillights, and the shift lever adjustment. The drive system section includes driveshaft/coupling checks and V-belt replacement. Having all nine systems in one document means you are not chasing separate bulletins or online forum posts.

Get the Right Break-In Procedure

Section 1 has a Break-In Procedure that tells you exactly how to run the engine for the first few hours – load conditions, oil change intervals, and what to watch for. Skip that and you risk glazing the rings or scoring the cylinder. The manual also includes preparation for storage and after storage, which matters if your ATV sits through the off-season. I store mine and follow the fuel stabilizer steps from this document. It keeps the carb clean.

Why OEM Beats Aftermarket

Aftermarket manuals often combine multiple years and models into one book, and they get the specs wrong. I have seen torque tables that list a 425 head bolt at the same value as a 350 – they are not the same engine. This manual is year-specific (2010), model-specific (350 and 425), and printed by Arctic Cat. The pdf bookmarks match the factory table of contents. You can jump from torque specs straight to the valve adjustment procedure without scrolling through generic noise. That is worth the access by itself.

Does this manual cover both the 350 and 425 models?

Yes. It covers both the 2010 Arctic Cat 350 and 425.

What torque specs are listed?

Section 1 includes a Torque Specifications table with fastener locations and values in both ft-lb and N-m. That table covers the engine, transmission mounts, suspension bolts, brake calipers, and more. The manual also lists torque for specific engine components like the cylinder head, oil pump gear, and clutch shoe in Section 3. You get the factory numbers for every critical fastener – not a generic range. For example, the cylinder head torque sequence is given step-by-step, not just a final value. That level of detail prevents warping the head.

Can I use this for the 2011 model?

No. This manual is for the 2010 model year. The 2011 models have different electrical and cooling components. Check the Arctic Cat 350 2012 Service Manual for later years, or the Arctic Cat 425 2011 Service Manual – OEM Factory Specs for the 2011 version. Also available is the Arctic Cat 2012 ATV Series Service Manual if you need coverage for multiple models.

Is this a factory manual or a reprint?

It is a direct OEM PDF from Arctic Cat, not an aftermarket copy. No guesswork, no redrawn diagrams. Page 1 includes the copyright by Arctic Cat Inc. and the product service department contact. If you need to diagnose the transmission, the manual gives you the centrifugal clutch inspection procedure and gear position switch testing – all factory-sourced. For more on transmissions in general, see Manual Transmission differences. The exhaust section covers the muffler/spark arrester but does not detail catalytic converter systems – for that see Catalytic Converters if you are retrofitting.

Access the Factory Manual from AutoRepairManuals and keep it on your tablet or print it for the shop. When you torque that cylinder head, you will know exactly what number to set your wrench to. No second-guessing, no forum searches, no stripped threads. That is the value of OEM documentation.