Maintenance
Servicing a motorcycle at home
The first service you do yourself is three parts and one manual. The manual is the important one.
By Jean-Benoit Buisson
Three parts, three ways of being right
The oil. Matched on an API category and a JASO grade from your manual. JASO exists for motorcycles specifically, because the engine oil also bathes a wet clutch, and MA2 is the grade that keeps it from slipping. An oil publishing neither cannot be matched to anything.
The filter. Bought by cross-reference, never by measurement. Two filters in this catalogue publish diameters two millimetres apart, identical heights, and M20×1.0 against M20×1.5 — near-identical to the eye and not interchangeable.
The plug. Bought by its code. The letters and digits encode the thread, the reach, whether a resistor is fitted, and the heat range. One character apart is a different plug.
A filter wrench, in the right size.
One listing here publishes 65 mm and an edged fitting — which is enough to buy the cup wrench before the sump is empty. A filter tightened by a season of heat cycles can be genuinely stuck, and the alternative is a screwdriver through the can.
Some filters solve it themselves with a nut welded to the end, which turns the whole problem into a spanner job.
The other thing that makes it a job rather than a fight
A stand. Either the machine is upright on its own or you are holding it with one hand. A scissor jack lifts from underneath; a paddock stand lifts one end.
And the size of can to buy
Oil ages once the seal is broken. Buy the volume your engine actually takes rather than the biggest can on the shelf.