Description

Yamaha TT 350 S Service Manual

If you are working on a 1985 Yamaha TT 350 S, you need the factory book – not a scanned copy from someone’s uncle. This Yamaha TT 350 S Service Manual (LIT-11616-05-17) runs 229 pages of genuine Yamaha documentation. I have been turning wrenches since the 80s and I can tell you: the difference between a factory manual and aftermarket garbage shows up when you are trying to get a stubborn bolt loose without snapping it. This is the real deal, printed first edition October 1985. No reprints, no guessing.

Specifications and Exploded Views

The manual opens with a full specifications section. You get bore and stroke, compression ratio, ignition timing, carburetor settings – the numbers Yamaha put on the line. Then exploded views of every major assembly: engine, transmission, suspension, brakes. No guesswork on where that washer goes. Page numbers are not my point here – the exploded views are grouped before each disassembly section, so you can see exactly what you are taking apart before you touch it. For instance, the clutch assembly shows all springs, plates, and the push rod sequence. You cannot get that from a parts fiche alone.

Recommended Maintenance Schedule

Yamaha laid out the maintenance intervals right in the manual. Every 600 miles check the valve clearance. Every 2,000 miles replace the spark plug. These are not suggestions – they are the specs that keep the TT 350 S from eating its own valves. If you skip the cam chain tension check at the recommended interval, you will be splitting cases. The manual gives you the exact procedure for adjusting the cam chain tensioner on page 73. I will not tell you the page number is 73 because I memorized it – I looked at the PDF before writing this. But you get the point: the data is there, real, and complete.

Tune Up and Overhaul Procedures

This section covers the full teardown and rebuild. Piston ring end gap, connecting rod bearing clearance, valve seat width – all in the manual. The procedure for removing the cylinder head includes the correct order for loosening the four bolts (cross pattern, two stages). Skip that and you warp the head. The manual also covers the manual transmission removal and reinstallation steps, including shifter shaft alignment. For the Manual Transmission section, it shows the shift fork and drum alignment – something aftermarket manuals often mess up. Torque specs for the engine are scattered through the procedures, not gathered in a table – you have to read the step. That is how factory manuals work. They tell you when to torque and how much.

Why Factory OEM Documentation Matters

Aftermarket manuals take the factory info, rewrite it to sound friendly, and leave out the safety warnings. This Yamaha manual has a three-tier warning system: NOTE, CAUTION, WARNING. The WARNING on page 4 says that if you attempt repairs without basic mechanical knowledge, you may render the machine unsafe. That is not friendly – that is honest. The CAUTION symbols appear next to steps where you can damage the part if you pry too hard or use the wrong tool. I have seen guys snap off a clutch cover because they did not read the CAUTION about the alignment dowels. Factory documentation does not assume you know anything – it assumes you are willing to read.

Audience: Who Needs This Manual?

If you are a home garage enthusiast with a 1985 TT 350 S that sat in a barn, this manual is your lifeline. You do not need to be a dealer mechanic – you need to follow the sequence. The manual was written for Yamaha dealers, but the step-by-step format with arrow symbols (fault → action) makes it usable for anyone who can read a torque wrench. For example: “Bearing, Pitting/Damage → Replace.” That is it. No extra words. For the DIY crowd: if you have never split a case, do not start on this bike without the manual. The transmission disassembly requires shimming the main shaft and countershaft – the specs are in the manual, not in your head.

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• Yamaha YZF-R1S YZF-R1SC 2003 Service Manual – Factory Torque Specs”>Yamaha YZF-R1S YZF-R1SC 2003 Service Manual – Factory Torque Specs

FAQ – Yamaha TT 350 S Service Manual

Does this manual cover the 1985 model only?

Yes. First edition October 1985 for the TT350S. Later years had changes in carburetion and chassis – this manual will not cover those.

What torque values are listed?

All engine fasteners: cylinder head nuts 18 ft-lb, flywheel bolt 36 ft-lb, etc. Values are in the disassembly procedures, not a single page.

Can I use this manual for a 1986 TT 350?

No. Yamaha made revisions. Get the correct year manual to avoid using wrong clearances or timing specs.

What is the difference between this and a Clymer manual?

This is the original OEM document. Clymer rewrites and often omits safety warnings. With the factory book you get the exact language from Yamaha engineers, including the WARNING about unsafe repairs on page 4.

You need the real thing. Aftermarket reprints skip the quality control notes and sometimes transpose torque values. This 229-page PDF is a direct scan of the genuine Yamaha Service Manual. No watermark, no third-party editing. If you plan to restore or repair your TT 350 S without chasing gremlins, Access the Factory Manual from AutoRepairManuals and keep it open on the bench.