Tune-Up; Oil Pump; Spark Plug - Suzuki RV50 Service Manual

In order to maintain the full performance originally built in the motorcycle, a periodic motorcycle tune-up
is essential.
If
any deficiency is encountered during operation of the motorcycle, it must be diagnosed immediately,
and rectified.

Oil Pump

By turning the throttle grip, align the dent mark
on the throttle valve with the upper part of the
carburetor main bore. Holding the throttle grip in
that position, adjust the oil pump cable with the
adjuster so that the aligning marks align.
To adjust:
1) Loosen the adjuster lock nut.
2) Turn the cable adjuster in or out until proper
adjustment is obtained.
3) Be sure to secure the adjuster with the lock nut.
,i) Aligning marks
(;>)Adjuster lock nut
(j) Cable ad juster

7. TUNE-UP

Spark Plug

Spark plug gap: Measure the gap using a thickness
gauge.
The standard spark plug gap is as follows:
Standard
Spark plug gap
Heat range :
W20FP spark plug is standard for this motorcycle.
However, the spark plug may be affected by
changes in temperature, altitude, carburetion or
ignition timing. If for some reason the standard
spark plug shows signs of overheating try a colder
spark plug; according to the table below.
Conversely if the plug is wet or dirty with carbon a
hotter plug may be used.
Hotter type \ BP4H
Standard
Colder type BP7HS
Caution : When installing the spark plug, screw it
in with your fingers, to prevent stripping the
threads, then tighten with a torque wrench to
2.5 ,..._, 3.0 kg-m (18.0,...., 21.6 ft-lb).
"'
0.6 0.7 mm
The NGK BP6HS or Nippon Denso
i
NGK Nippon Denso
I
W14FP
I
BP6HS W20FP
W24FP
Remarks
Apt to
get wet
I
Apt to
overheat
15