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22 Walker Wood, Baildon, Shipley, West Yorkshire, BD17
5BE,
England |
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RS125R / RS250R |
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The year 1998 and later RS125R and the year 1999 and later RS250R
have carburetors equipped with power jets, which are designed to
continuously inject fuel at engine speeds of 4000 rpm or less
despite throttle opening. If engine speeds of 4000 rpm or less are
often used or kept during warming up, fuel mixture will become very
rich, causing repeated rich feeling or hesitation. Especially, in
winter fuel mixture settings are designed to be rich, causing
propensities toward rich feeling or hesitation.
Warming up |
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1) |
After engine start up, engine speeds of 6000 rpm to 7000 rpm will be
kept with constant throttle opening until coolant temperatures go up
to 40°C to 50°C. |
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2) |
If coolant temperatures reach the specified level above, then the
throttle is gradually opened until 10000 rpm is attained. After
that, snapping is used to keep warming up and the fuel cock is
turned off when coolant temperatures reach 55°C. If coolant
temperatures reach 60°C to 65°C or you feel sharp engine revving up,
warming up has been completed. |
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3) |
To stop the engine, fully close the throttle. Do not turn off the
kill switch while throttle is kept open. |
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Running in plays an important play in determining your physical
conditions or avoiding mechanical failures. New machine or those
with some parts replaced with new ones must be run in. |
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1) |
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for running in mileage, see owners' manual. |
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Coolant temperatures: about 55°C |
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Carburetor setting should not change from the best settings (lean
setting must not be acceptable) |
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2) |
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Running at as higher gears (5th or 6th) as possible using fully open
throttles is the best. If engine speeds are going up beyond the set
speed, full opening or closing of the throttle is used to control
the engine speed. |
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Engine speed associated with down shifting should not be raised so
higher. (engine braking rpm associated with down shifting should be
gradually raised as well) |
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3) |
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To stop the engine, fully close the throttle. Do not turn off the
kill switch while throttle is kept open. |
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The reasons why running in is required
Running in means the work which makes moving parts to move smoothly
without resistance. Running in must result in smoothness instead of
looseness. Smoothness without looseness means that parts are able to
move to intended positions accurately, speedily without any
resistance, resulting in, when parts are assembled, the best
performance.
Good running in practice will give parts prolonged life, providing
constant performance for extended period of time.
For instance, if loads are applied to pistons at a stretch at the
initial stage of running in, deformed pistons will result, which
will reduce service life of the cylinder as well since already
deformed pistons cause severe contacts partially at the extended
travel kilometres. Also, the performance will be degraded as well.
Good running in practices will secure constant performance for
periodic part replacement periods. |
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The RS, intended for sale to the public, does not provide the best
riding positions to all the riders. So, the RS may not fit some riders
with regard to extremities.
The point in determining positions is that riders can control his/her
machine with ease. The most important things are machine holding by the
lower half of the body and relaxed upper half of the body.
Integrity of lower half of the body becomes important in response to
sudden skid during cornering. Also, relaxed upper half of the body is
effective in turning or delicate brake control.
Seat height, seating position, or handle position should be changed to
fit your body so as to ensure free upper half of the body and machine
holding.
To hold the machine by the lower half of the body, ankles should be used
to hold the machine, leading to integrity of the machine and the riders.
Positions should be found which will give you aggressive machine
control. |
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Return To RS125 HRC Setting Data & Maintenance Information
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Return To sp125racing.com Homepage |
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SP125 Limited
Disclaimer
Honda, HRC
and all other parts supplied by the SP125 Limited are not guaranteed when used in competition events.
As such, it is a condition of our making all parts available that it is solely
the decision of each individual, rider, team member or team whether they choose
to use any part supplied and in doing so, absolve the manufacturer and SP125
Limited of
any or all such
claims, including damage to equipment and/or injury to personnel
irrespective of how caused.
All parts remain property of SP125 Limited until
paid for in full.
All 'special order'
parts, that are ordered specially under the instruction of the customer, are non
returnable and non refundable.
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