User manual YAMAHA FX NYTRO-2008

[. . . ] OWNER'S MANUAL FX10X FX10RTX FX10RTRX FX10RTRAX FX10MTX FX10MTRX FX10MTRAX LIT-12628-02-69 8GL-28199-10 ESU10040 Introduction ESU10120 Congratulations on your purchase of a Yamaha snowmobile. This model is the result of Yamaha's vast experience in the production of fine sporting and touring snowmobiles. It represents the high degree of craftsmanship and reliability that have made Yamaha a leader in these fields. This manual will give you an understanding of the operation, inspection, and basic maintenance of this snowmobile. [. . . ] Do not touch the hot muffler and engine during or immediately after operation. ECS00370 CAUTION: Make sure that all cables, leads, etc. , are routed properly before installing the shroud and covers. 1. Fastener NOTE: When installing the shroud and covers, be sure to tighten the fasteners securely. ESU11780 Checking the spark plugs The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate the condition of the engine. Check the coloration on the white porcelain insulator around the center electrode. The ideal coloration at this point is a medium to a light tan color for a snowmobile that is being ridden normally. If a spark plug shows a distinctly different color, there could be something wrong with the engine. For example, a very white center electrode porcelain color could indicate an intake track air leak or carburetion problem for that cylinder. Do not attempt to diagnose such problems yourself. Instead, take the snowmobile to a Yamaha dealer for inspection and possible repairs. You should periodically remove and inspect the spark plug because heat and deposits will cause a spark plug to slowly break down and erode. Consult a Yamaha dealer before changing to a different type of spark plug. 1. Place the side cover in the original position, and then tighten the fasteners. NOTE: Be sure to insert the projection on the rear of the side cover into the hole in the fuel tank side cover and insert the projections on the front of the cover into the slots in the lower cover. Install the shroud. EWS00090 WARNING G Do not drive the snowmobile with the shroud or covers unfastened or removed. 44 Periodic maintenance Specified spark plug: Manufacturer: NGK Model: CR9E Spark plugs are produced in several different thread lengths. The thread length or reach is the distance from the spark plug gasket seat to the end of the threaded portion. If the reach is too long, overheating and engine damage may result. If the reach is too short, spark plug fouling and poor performance may result. Also, if the reach is too short, carbon will form on the exposed threads resulting in combustion chamber hot spots and thread damage. Always use a spark plug with the specified reach. Spark plug reach: 19. 0 mm (0. 75 in) When installing the spark plug, always clean the gasket surface. Wipe off any grime from the threads and tighten the spark plug to the specified torque. Spark plug tightening torque: 12. 5 Nm (1. 25 m·kgf, 9 ft·lb) ECS00380 CAUTION: Make sure that the spark plug caps are securely installed. Otherwise the spark plug caps could be damaged due to engine vibration. ESU12791 Adjusting the throttle cable free play 1. [. . . ] 18 Shroud and covers, removing and installing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Ski damping force, adjusting (FX10) . . . . . . . . 24 Ski spring preload, adjusting (FX10 / FX10MT / FX10MTR / FX10MTRA) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Skis and ski runners . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ]