Jun 162013 Tagged with , 0 Responses

Yamaha TMAX Engine Break-in

The TMAX 530 has a 530cc engine with a 68mm bore.  It features forged aluminum pistons, injectors from the YZF-R6, a new camshaft and larger intake valves to increase torque.  Full-throttle for this baby is 4000 RPM marked with a  loud blast from the exhaust.  This engine runs cooler than most engines and when treated well, can keep itself from overheating.  There has never been a more important period in the life of your TMAX engine than the period between 0 and 1600 km (1000 MI). For this reason, you should read the following material carefully.  Break-in procedure needs to begin with a brand new engine for optimum effect.

  • Since the engine is brand new, do not put an excessive load on it for the first 1600 km (1000 MI). The various parts in the engine wear and will polish themselves to the correct operating clearances.
  • During this period, prolonged full-throttle operation after 1000 km (600 MI) or any condition that might result in engine overheating must be avoided.
  • Avoid prolonged operation above 4000 r/min.

◦     NOTICE: After 1000 km (600 MI) of operation, the engine oil must be changed, and the oil filter cartridge or element replaced.

  • When the odometer is between 1000–1600 km (600–1000 MI), avoid prolonged operation above 6000 r/min.
  • After 1600 km (1000 MI) and beyond, the vehicle can now be operated normally.

With proper break-in procedures followed, your Tmax will ride smoothly.  Though after break-in, the Tmax can handle up to 108 MPH, it is not recommended.  Although break-in will improve efficiency and reduce wear over time, higher speeds will abuse your engine and increase the wear on the pistons.

If you are worried about having to heat cycle your engine, have no fear.  Heat treatment of engine parts is very different from normal break-in procedures and is usually done at the factory because the temperatures required for heat treating are higher than the engine can normally reach.

If you plan on breaking in your engine on the road and not a closed race track, here are a few tips.

  • Watch your speed.  If it starts to get pushed too fast too soon, it will damage your engine.
  • Remember to accelerate on the straightaways only and slow early for turns until you are used to how your motorcycle handles.
  • The hard acceleration and hard engine breaking are both important to proper engine break-in procedures.

Should you chose to break in your engine on a rack track:

  • One lap at a slower speed will be needed to warm up your tires, check for leaks, and feel for normal engine throttle.
  • Follow with a 15 minute session and keep tabs on the water temperature.
  • Next, start the break-in procedures as listed above.


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