Sprocket; Drive And Driven Sprockets Setting Parts - Yamaha YZ85W1 Service Manual

CHASSIS
• In actuality, it is very difficult to achieve set-
tings suitable for the entire course and
some settings may be sacrificed. Thus, the
settings should be matched to the portion
of the course that has the greatest effect on
the race result. In such a case, run through
the entire course while making notes of lap
times to find the best balance; then, deter-
mine the secondary reduction ratio.
• If a course has a long straight portion
where a vehicle can run at maximum
speed, the vehicle is generally set such that
it can develop its maximum revolutions
toward the end of the straight line, with care
taken to avoid the engine over-revving.
NOTE: NOTE:
Riding technique varies from rider to rider and
the performance of a vehicle also vary from
vehicle to vehicle. Therefore, do not imitate
other rider's settings from the beginning but
choose your own setting according to the level
of your riding technique.
DRIVE AND DRIVEN SPROCKETS SETTING
PARTS
YZ85:
Part name
Drive

Sprocket

Real wheel
sprocket
**(STD) 48T 5PA-25448-00
*For EUR, CAN
**For AUS, NZL
YZ85LW:
Part name
Drive
Sprocket
Real wheel
sprocket
9-8
TUN
Size Part number
(STD) 14T 9382A-14227
15T 9382A-15228
46T 5PA-25446-00
*(STD) 47T 4ES-25447-10
49T 5PA-25449-00
Size Part number
(STD) 14T 9382A-14227
15T 9382A-15228
51T 5PA-25451-00
(STD) 52T 5PA-25452-00
53T 5PA-25453-00