Differential Gear Oil; Throttle Lever; Fittings And Fasteners; Lights - Yamaha YFM400FT Owner's Manual

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Differential gear oil

Make sure the differential gear oil is at the
specified level. Add oil as necessary. (See
pages 8-14–8-16 for details.)
Recommended oil:
SAE 80 API GL-4 Hypoid gear oil
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Throttle lever

Check to see that the throttle lever operates
correctly. It must open smoothly and spring
back to the idle position when released. Have
a Yamaha dealer repair as necessary for
proper operation.
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Fittings and fasteners

Always check the tightness of chassis fittings
and fasteners before a ride. Take the machine
to a Yamaha dealer or refer to the Service
Manual for correct tightening torque.
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Lights

Check the headlights and tail/brake light to
make sure they are in working condition. Re-
pair as necessary for proper operation.
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Switches

Check the operation of all switches. Have a
Yamaha dealer repair as necessary for proper
operation.
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